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7646-93-7

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7646-93-7 Usage

Chemical Properties

Also known as acid potassium sulfate and potassium acid sulfate, KHS04 is water soluble, white deliquescent crystals,which melt at 214°C. It is used in wine making, fertilizer manufacture, and as a flux and food preservative.

Uses

Different sources of media describe the Uses of 7646-93-7 differently. You can refer to the following data:
1. As flux in analysis of ores and siliceous Compounds.
2. Potassium hydrogen sulfate is used in the conversion of tartrates to bitartrates in wine. It serves as a disintegrating agent in analytical chemistry and as an intermediate in the preparation of potassium persulfate by electrolysis. It is also employed in the manufacturing of fertilizers.
3. Potassium bisulfate may be used:As a catalyst for the preparation of butyl paraben from p-hydroxybenzoic acid and n-butyl alcohol.As a promoter for the synthesis of 3,4-dihydropyrimidin-2(1H)-one derivatives via Biginelli reaction in ethylene glycol.As an acid catalyst for the synthesis of ethyl tert-butyl ether (ETBE) from ethanol and tert-butyl alcohol via reactive distillation.As a dehydrating agent for the synthesis of pyruvic acid from tartaric acid.

General Description

Potassium bisulfate is a colorless crystalline solid with a sulfur odor. Potassium bisulfate may cause illness from ingestion. If heated to high temperatures Potassium bisulfate may emit toxic fumes. Potassium bisulfate is used to make fertilizers and wine.

Air & Water Reactions

Fused salt is deliquescent, Soluble in water, yielding a corrosive acidic solution.

Reactivity Profile

Acidic salts, such as Potassium bisulfate , are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions.

Health Hazard

TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.

Safety Profile

Moderately toxic by ingestion. A corrosive irritant to the skin, eyes, and mucous membranes. When heated to decomposition it emits toxic fumes of SOx and K2O. Can form an explosive mixture. See also SULFATES.

Purification Methods

Crystallise it from H2O (1mL/g) between 100o and 0o. It is also formed when a warm solution of K2SO4 in conc H2SO4 is cooled down.

Check Digit Verification of cas no

The CAS Registry Mumber 7646-93-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,4 and 6 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 7646-93:
(6*7)+(5*6)+(4*4)+(3*6)+(2*9)+(1*3)=127
127 % 10 = 7
So 7646-93-7 is a valid CAS Registry Number.
InChI:InChI=1/K.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+1;/p-1

7646-93-7 Well-known Company Product Price

  • Brand
  • (Code)Product description
  • CAS number
  • Packaging
  • Price
  • Detail
  • Alfa Aesar

  • (A12428)  Potassium hydrogen sulfate, 97%   

  • 7646-93-7

  • 100g

  • 265.0CNY

  • Detail
  • Alfa Aesar

  • (A12428)  Potassium hydrogen sulfate, 97%   

  • 7646-93-7

  • 500g

  • 661.0CNY

  • Detail
  • Alfa Aesar

  • (A12428)  Potassium hydrogen sulfate, 97%   

  • 7646-93-7

  • 2500g

  • 1058.0CNY

  • Detail
  • Alfa Aesar

  • (A12428)  Potassium hydrogen sulfate, 97%   

  • 7646-93-7

  • 10000g

  • 3537.0CNY

  • Detail
  • Fluka

  • (60348)  Potassiumbisulfate  TraceSELECT®, for trace analysis, ≥99.995% (metals basis)

  • 7646-93-7

  • 60348-25G

  • 575.64CNY

  • Detail
  • Honeywell

  • (60363)  Potassiumbisulfate  purum p.a., ≥98.0% (T)

  • 7646-93-7

  • 60363-500G

  • 1,773.72CNY

  • Detail
  • Honeywell

  • (60363)  Potassiumbisulfate  purum p.a., ≥98.0% (T)

  • 7646-93-7

  • 60363-1KG

  • 3,267.81CNY

  • Detail
  • Sigma-Aldrich

  • (223476)  Potassiumbisulfate  reagent grade

  • 7646-93-7

  • 223476-500G

  • 1,519.83CNY

  • Detail
  • Sigma-Aldrich

  • (223476)  Potassiumbisulfate  reagent grade

  • 7646-93-7

  • 223476-1KG

  • 1,916.46CNY

  • Detail
  • Aldrich

  • (401544)  Potassiumbisulfate  ≥99.99% trace metals basis

  • 7646-93-7

  • 401544-10G

  • 551.07CNY

  • Detail
  • Aldrich

  • (401544)  Potassiumbisulfate  ≥99.99% trace metals basis

  • 7646-93-7

  • 401544-50G

  • 1,898.91CNY

  • Detail

7646-93-7SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name Potassium bisulfate

1.2 Other means of identification

Product number -
Other names Schwefelsaeure-monopropylester,Natrium-Salz

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Food additives
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:7646-93-7 SDS

7646-93-7Synthetic route

dipotassium peroxodisulfate

dipotassium peroxodisulfate

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

Conditions
ConditionsYield
In water byproducts: O2; complete decompn. at room temp. in 3 months; decompn. faster at higher temp.;99%
In water byproducts: O2; complete decompn. at room temp. in 3 months; decompn. faster at higher temp.;99%
With water In sulfuric acid byproducts: O2; react. rate in relation to H2SO4 conc.;
dipotassium peroxodisulfate

dipotassium peroxodisulfate

sulfuric acid
7664-93-9

sulfuric acid

water
7732-18-5

water

A

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

B

dihydrogen peroxide
7722-84-1

dihydrogen peroxide

Conditions
ConditionsYield
In sulfuric acid hydrolysis by heating; simultaneous distn. (by H2O vapor);; distn.; 40-60% aq. soln. of H2O2;;A n/a
B 95%
In sulfuric acid aq. H2SO4; hydrolysis by heating; simultaneous distn. (by H2O vapor);; distn.; 40-60% aq. soln. of H2O2;;A n/a
B 95%
In sulfuric acid hydrolysis by heating; simultaneous distn. (by H2O vapor);; distn.;;A n/a
B 92%
dipotassium peroxodisulfate

dipotassium peroxodisulfate

sulfuric acid
7664-93-9

sulfuric acid

water
7732-18-5

water

A

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

B

dihydrogen peroxide
7722-84-1

dihydrogen peroxide

C

oxygen
80937-33-3

oxygen

D

ozone
10028-15-6

ozone

Conditions
ConditionsYield
In water investigations within the system K2S2O8-H2SO4-H2O at 100 °C, formation of O3 at higher concentrations of H2SO4, mechanism discussed;;
dipotassium peroxodisulfate

dipotassium peroxodisulfate

sulfuric acid
7664-93-9

sulfuric acid

A

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

B

dihydrogen peroxide
7722-84-1

dihydrogen peroxide

Conditions
ConditionsYield
In sulfuric acid 50-55°C;; 30% aq. soln. of H2O2;;
In sulfuric acid aq. H2SO4; 50-55°C;; 30% aq. soln. of H2O2;;
potassium iodide
7681-11-0

potassium iodide

A

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

B

iodine
7553-56-2

iodine

Conditions
ConditionsYield
With sulfuric acid byproducts: SO2, I2; with great amount of concd. H2SO4;
With sulfuric acid byproducts: H2S, H2O; with concd. H2SO4;
With H2SO4
potassium sulfate

potassium sulfate

nitric acid
7697-37-2

nitric acid

A

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

B

potassium nitrate

potassium nitrate

Conditions
ConditionsYield
80 °C; cooling to 20 °C;
80 °C; cooling to 20 °C;
potassium nitrate

potassium nitrate

A

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

B

nitric acid
7697-37-2

nitric acid

Conditions
ConditionsYield
With sulfuric acid distn. with concd. H2SO4;
With H2SO4 distn. with concd. H2SO4;
nitrosylsulfuric acid

nitrosylsulfuric acid

potassium nitrate

potassium nitrate

A

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

B

dinitrogen trioxide
10544-73-7

dinitrogen trioxide

C

Nitrogen dioxide
10102-44-0

Nitrogen dioxide

Conditions
ConditionsYield
condensation,distn.;
potassium sulfate

potassium sulfate

A

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

B

potassium chloride

potassium chloride

Conditions
ConditionsYield
With hydrogenchloride In water products pptd. from the cooled soln.;;
With HCl In water products pptd. from the cooled soln.;;
potassium sulfate

potassium sulfate

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

Conditions
ConditionsYield
With hydrogenchloride In water satd. soln. of neutral sulfate is distd. with aq. HCl;;
With sulfuric acid In melt equiv.;
With sulfuric acid In water equiv. ; in soln. of HCl;
potassium cyanide

potassium cyanide

A

potassium sulfate

potassium sulfate

B

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

Conditions
ConditionsYield
With H2SO4 In hydrogen cyanide
dipotassium peroxodisulfate

dipotassium peroxodisulfate

manganese(II) oxide

manganese(II) oxide

A

manganese(IV) oxide
1313-13-9

manganese(IV) oxide

B

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

C

permanganic acid
13465-41-3

permanganic acid

Conditions
ConditionsYield
silver (I) ion In water in alk. soln.;
copper(II) ion In water in alk. soln.;
cobalt(II) chloride In water in alk. soln.;
dipotassium peroxodisulfate

dipotassium peroxodisulfate

manganese(II) oxide

manganese(II) oxide

A

manganese(IV) oxide
1313-13-9

manganese(IV) oxide

B

potassium permanganate
7722-64-7

potassium permanganate

C

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

Conditions
ConditionsYield
In water pH above 7-8; different yields depending on temp. and pH;
dipotassium peroxodisulfate

dipotassium peroxodisulfate

acetone
67-64-1

acetone

A

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

B

carbon dioxide
124-38-9

carbon dioxide

C

acetic acid
64-19-7

acetic acid

Conditions
ConditionsYield
With water; silver (I) ion In sulfuric acid Kinetics;
With H2O; silver (I) ion In sulfuric acid Kinetics; aq. H2SO4;
dipotassium peroxodisulfate

dipotassium peroxodisulfate

hydroxylamine
7803-49-8

hydroxylamine

A

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

B

nitrogen
7727-37-9

nitrogen

Conditions
ConditionsYield
In not given slow react. in neutralic, faster in alkaline soln.;
In not given slow react. in neutralic, faster in alkaline soln.;
dipotassium peroxodisulfate

dipotassium peroxodisulfate

hydroxylamine
7803-49-8

hydroxylamine

A

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

B

oxygen
80937-33-3

oxygen

C

Nitrate

Nitrate

D

Nitrite

Nitrite

Conditions
ConditionsYield
In not given in acidic soln.;
In not given in acidic soln.;
dipotassium peroxodisulfate

dipotassium peroxodisulfate

sodium sulfite
7757-83-7

sodium sulfite

A

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

B

sodium sulfate
7757-82-6

sodium sulfate

Conditions
ConditionsYield
With water In water in diluted aq. soln.;;
With H2O In water in diluted aq. soln.;;
manganese(II) sulfate

manganese(II) sulfate

dipotassium peroxodisulfate

dipotassium peroxodisulfate

A

manganese(IV) oxide
1313-13-9

manganese(IV) oxide

B

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

Conditions
ConditionsYield
With water In water byproducts: H2SO4; neutral soln.; with heating;
With H2O In water byproducts: H2SO4; neutral soln.; with heating;
potassium nitrilosulfonate

potassium nitrilosulfonate

water
7732-18-5

water

A

potassium sulfate

potassium sulfate

B

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

C

aminosulfonic acid
5329-14-6

aminosulfonic acid

Conditions
ConditionsYield
In water boiling water;;
In water boiling water;;
potassium pyrosulfate

potassium pyrosulfate

water
7732-18-5

water

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

Conditions
ConditionsYield
In solid hydrolysis of K2S2O7 by H2O;
potassium vanadium(V) oxytrisulfate

potassium vanadium(V) oxytrisulfate

water
7732-18-5

water

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

Conditions
ConditionsYield
In neat (no solvent) treating K3VO(SO4)3 with water vapor (150°C); further product: amorphous phase;
potassium vanadium(V) oxytrisulfate

potassium vanadium(V) oxytrisulfate

water
7732-18-5

water

A

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

B

potassium divanadium(V) trioxytetrasulfate

potassium divanadium(V) trioxytetrasulfate

Conditions
ConditionsYield
In neat (no solvent) treating K3VO(SO4)3 with water vapor (closed system, 200 - 250°C, 6 h); generating water vapor by annealing sodium sulfate decahydrate in the reaction zone; further product: yellow glass; X-ray phase analysis;
potassium chloride

potassium chloride

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

Conditions
ConditionsYield
With sulfuric acid byproducts: HCl; in multiple hearth roaster;
With sulfuric acid byproducts: HCl; in a heatable roller;
With sulfuric acid byproducts: HCl; molar ratio of educts 1:1;
potassium hydroxylamine-N,N-disulphonate

potassium hydroxylamine-N,N-disulphonate

A

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

B

potassium hydroxylamine sulfonate
13768-26-8

potassium hydroxylamine sulfonate

Conditions
ConditionsYield
With water boiling with water or in air; crystn.;
Hydrazinsulfonsaeure
14392-55-3

Hydrazinsulfonsaeure

A

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

B

nitrogen
7727-37-9

nitrogen

Conditions
ConditionsYield
With potassium hydrogencarbonate In water byproducts: HI; decompn.;;
With potassium permanganate; alkali hydroxide In water decompn.;;
With I; KHCO3 In water
With alkali hydroxide; KMnO4 In water
potassium ethyl sulfate
563-17-7

potassium ethyl sulfate

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

ethyl N-(4-biphenylmethyl)-N-[2-[4-(tert-butoxycarbonylaminomethyl)phenoxy]phenyl] succinamate

ethyl N-(4-biphenylmethyl)-N-[2-[4-(tert-butoxycarbonylaminomethyl)phenoxy]phenyl] succinamate

N-(4-biphenylmethyl)-N-[2-[4-(tert-butoxycarbonylaminomethyl)phenoxy]phenyl] succinamic acid

N-(4-biphenylmethyl)-N-[2-[4-(tert-butoxycarbonylaminomethyl)phenoxy]phenyl] succinamic acid

Conditions
ConditionsYield
With sodium hydroxide In tetrahydrofuran; methanol; water99.4%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

tricarbonyl(1-exo-isopropyl-5-methoxy-1-endo-tetralol)-chromium

tricarbonyl(1-exo-isopropyl-5-methoxy-1-endo-tetralol)-chromium

tricarbonyl(1-isopropyl-5-methoxy-3,4-dihydronaphthalene)-chromium
134097-29-3

tricarbonyl(1-isopropyl-5-methoxy-3,4-dihydronaphthalene)-chromium

Conditions
ConditionsYield
In benzene (Ar), refluxed for 1h, poured into NaHCO3; extracted with benzene, washed with brine, dried over MgSO4, solvent evaporated in vac., chromy. (SiO2, ether/hexane); elem. anal., IR, NMR;96%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

(C5H5)Fe(C5H4CH2OC6H4CH2CH(CO2CH3)N(CH2CH2NHC(O)OCH2C6H5)C(O)CH2N2C4H2O2CH3)

(C5H5)Fe(C5H4CH2OC6H4CH2CH(CO2CH3)N(CH2CH2NHC(O)OCH2C6H5)C(O)CH2N2C4H2O2CH3)

(C5H5)Fe(C5H4CH2OC6H4CH2CH(CO2H)N(CH2CH2NHC(O)OCH2C6H5)C(O)CH2N2C4H2O2CH3)

(C5H5)Fe(C5H4CH2OC6H4CH2CH(CO2H)N(CH2CH2NHC(O)OCH2C6H5)C(O)CH2N2C4H2O2CH3)

Conditions
ConditionsYield
With barium dihydroxide In methanol; dichloromethane; water under N2; suspn. of Ba(OH)2 in MeOH-H2O added at room temp. to soln. of Fe complex over 5 min; stirred at room temp. for 4 h; acidified with 1 MKHSO4 to pH 1; aq. phase extd. with CH2Cl2; combined org. layers washed with water; dried (Na2SO4); evapd.; purified by column chromy. (silica gel, EtOAc-MeOH 9:1);95%
With lithium hydroxide In methanol; dichloromethane; water under N2; suspn. of LiOH in MeOH-H2O added at room temp. to soln. of Fe complex over 5 min; stirred at room temp. for 4 h; acidified with 1 M KHSO4 to pH 1; aq. phase extd. with CH2Cl2; combined org. layers washed with water; dried (Na2SO4); evapd.; purified by column chromy. (silica gel, EtOAc-MeOH 9:1);80%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

(C5H5)Fe(C5H4CH2OC6H4CH2CH(CO2CH3)N(CH2CH2NHC(O)OCH2C6H5)C(O)CH2N2C4H2O2CH3)
828923-51-9, 828923-86-0, 828923-88-2

(C5H5)Fe(C5H4CH2OC6H4CH2CH(CO2CH3)N(CH2CH2NHC(O)OCH2C6H5)C(O)CH2N2C4H2O2CH3)

(C5H5)Fe(C5H4CH2OC6H4CH2CH(CO2H)N(CH2CH2NHC(O)OCH2C6H5)C(O)CH2N2C4H2O2CH3)
828923-59-7, 828923-90-6

(C5H5)Fe(C5H4CH2OC6H4CH2CH(CO2H)N(CH2CH2NHC(O)OCH2C6H5)C(O)CH2N2C4H2O2CH3)

Conditions
ConditionsYield
With barium dihydroxide In methanol; dichloromethane; water under N2; suspn. of Ba(OH)2 in MeOH-H2O added at room temp. to soln. of Fe complex over 5 min; stirred at room temp. for 4 h; acidified with 1 MKHSO4 to pH 1; aq. phase extd. with CH2Cl2; combined org. layers washed with water; dried (Na2SO4); evapd.; purified by column chromy. (silica gel, EtOAc-MeOH 9:1);95%
With lithium hydroxide In methanol; dichloromethane; water under N2; suspn. of LiOH in MeOH-H2O added at room temp. to soln. of Fe complex over 5 min; stirred at room temp. for 4 h; acidified with 1 M KHSO4 to pH 1; aq. phase extd. with CH2Cl2; combined org. layers washed with water; dried (Na2SO4); evapd.; purified by column chromy. (silica gel, EtOAc-MeOH 9:1);80%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

tert-butyl 4-(hydroxy(pyridin-2-yl)methyl)piperidine-1-carboxylate
333986-05-3

tert-butyl 4-(hydroxy(pyridin-2-yl)methyl)piperidine-1-carboxylate

methanesulfonyl chloride
124-63-0

methanesulfonyl chloride

tert-butyl 4-((methylsulfonyloxy)(pyridin-2-yl)methyl)piperidine-1-carboxylate
333986-06-4

tert-butyl 4-((methylsulfonyloxy)(pyridin-2-yl)methyl)piperidine-1-carboxylate

Conditions
ConditionsYield
With sodium chloride; sodium hydrogencarbonate; triethylamine In dichloromethane94%
1H-imidazole
288-32-4

1H-imidazole

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

(3R,4S)-3-[(S)-1-hydroxypropyl]-1-[(R)-1-phenylethyl]-4-ethynyl-2-azetidinone
204775-75-7

(3R,4S)-3-[(S)-1-hydroxypropyl]-1-[(R)-1-phenylethyl]-4-ethynyl-2-azetidinone

tert-butyldimethylsilyl chloride
18162-48-6

tert-butyldimethylsilyl chloride

(3R,4S)-3-[(S)-1-(tert-butyldimethylsilyloxy)propyl]-1-[(R)-1-phenylethyl]-4-ethynyl-2-azetidinone
204775-78-0

(3R,4S)-3-[(S)-1-(tert-butyldimethylsilyloxy)propyl]-1-[(R)-1-phenylethyl]-4-ethynyl-2-azetidinone

Conditions
ConditionsYield
In N,N-dimethyl-formamide93%
piperidine
110-89-4

piperidine

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

trimethylaluminium-hexane

trimethylaluminium-hexane

methyl ester of (17S)-17-methyl-20-homoisocarbacyclin
106396-38-7

methyl ester of (17S)-17-methyl-20-homoisocarbacyclin

(1S,5S,6R,7R)-3-(4-piperidinocarbonylbutyl)-6-[(3S,5S,1E)-3-hydroxy-5-methyl-1-nonenyl]-7-hydroxybicyclo[3.3.0]-2-octene
326379-68-4

(1S,5S,6R,7R)-3-(4-piperidinocarbonylbutyl)-6-[(3S,5S,1E)-3-hydroxy-5-methyl-1-nonenyl]-7-hydroxybicyclo[3.3.0]-2-octene

Conditions
ConditionsYield
With nitrogen In toluene93%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

methyl-3 hydroxy-3 tetrahydrofuranne
64360-69-6

methyl-3 hydroxy-3 tetrahydrofuranne

A

2,5-dihydro-3-methyl-furan
1708-31-2

2,5-dihydro-3-methyl-furan

B

4-methyl-2,3-dihydrofuran
34314-83-5

4-methyl-2,3-dihydrofuran

Conditions
ConditionsYield
In 1,3,5-trimethyl-benzeneA n/a
B 92.8%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

1-tert-butyl 5-methyl indoline-1,5-dicarboxylate
272438-12-7

1-tert-butyl 5-methyl indoline-1,5-dicarboxylate

1-(tert-butoxycarbonyl)-2,3-dihydro-1H-indole-5-carboxylic acid
339007-88-4

1-(tert-butoxycarbonyl)-2,3-dihydro-1H-indole-5-carboxylic acid

Conditions
ConditionsYield
Stage #1: 1-tert-butyl 5-methyl indoline-1,5-dicarboxylate With lithium hydroxide In tetrahydrofuran; water at 20℃; for 24h;
Stage #2: potassium hydrogensulfate In tetrahydrofuran; water
92%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

K2H{Ru2(μ-SO4)4(H2O)2} * 6H2O

K2H{Ru2(μ-SO4)4(H2O)2} * 6H2O

K4{Ru2(SO4)2(μ-SO4)2(μ-O)2} * 2H2O

K4{Ru2(SO4)2(μ-SO4)2(μ-O)2} * 2H2O

Conditions
ConditionsYield
In neat (no solvent) sintering (400°C, 30 min), cooling to room temp. (air), addn. of water, stirring (1 h); filtration off, washing (water, alcohol, ether), recrystn. on addn. of K2SO4 (water); elem. anal.;90%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

ethyl bromide
74-96-4

ethyl bromide

1,3,5-tribenzoyl-2,6-bis(triethylsilyl)-4-(methyl-2',3'-O-isopropylidene-tartaroyl)-D-myoinositol

1,3,5-tribenzoyl-2,6-bis(triethylsilyl)-4-(methyl-2',3'-O-isopropylidene-tartaroyl)-D-myoinositol

A

2,6-bis(triethylsilyl)-myoinositol

2,6-bis(triethylsilyl)-myoinositol

B

2,6-bis(triethylsilyl)-3-benzoyl-myoinositol

2,6-bis(triethylsilyl)-3-benzoyl-myoinositol

Conditions
ConditionsYield
In ethyl acetateA 78%
B 80%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

[Au(SPyCONHCHMeCOOMe)(PPh3)]
1436394-02-3

[Au(SPyCONHCHMeCOOMe)(PPh3)]

[Au(SPyCONHCHMeCOOH)(PPh3)]
1436394-08-9

[Au(SPyCONHCHMeCOOH)(PPh3)]

Conditions
ConditionsYield
Stage #1: [Au(SPyCONHCHMeCOOMe)(PPh3)] With lithium hydroxide In methanol at 20℃;
Stage #2: potassium hydrogensulfate In water pH=3 - 4;
79.5%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

[Au(SPyCONHCH2COOMe)(PPh3)]
1436394-01-2

[Au(SPyCONHCH2COOMe)(PPh3)]

[Au(SPyCONHCH2COOH)(PPh3)]
1436394-07-8

[Au(SPyCONHCH2COOH)(PPh3)]

Conditions
ConditionsYield
Stage #1: [Au(SPyCONHCH2COOMe)(PPh3)] With lithium hydroxide In methanol at 20℃;
Stage #2: potassium hydrogensulfate In water pH=3 - 4;
76.8%
potassium bisulfite

potassium bisulfite

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

ethyl acetate n-hexane

ethyl acetate n-hexane

6,6-dibromopenicillanic acid
24158-88-1

6,6-dibromopenicillanic acid

2,2,2-Trichloroethyl chloroformate
17341-93-4

2,2,2-Trichloroethyl chloroformate

2,2,2-trichloroethyl 6,6-dibromopenicillanic acid

2,2,2-trichloroethyl 6,6-dibromopenicillanic acid

Conditions
ConditionsYield
With pyridine; sodium chloride; sodium hydrogencarbonate In ethyl acetate76%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

methyl 4-(2-nitrophenoxy)phenylacetate
82340-96-3

methyl 4-(2-nitrophenoxy)phenylacetate

4-(2-nitrophenoxy)phenylacetic acid

4-(2-nitrophenoxy)phenylacetic acid

Conditions
ConditionsYield
With sodium hydroxide In tetrahydrofuran; methanol; water71.8%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

[Au(SPyCONHCHBnCOOMe)(PPh3)]
1436394-04-5

[Au(SPyCONHCHBnCOOMe)(PPh3)]

[Au(SPyCONHCHBnCOOH)(PPh3)]
1436394-10-3

[Au(SPyCONHCHBnCOOH)(PPh3)]

Conditions
ConditionsYield
Stage #1: [Au(SPyCONHCHBnCOOMe)(PPh3)] With lithium hydroxide In methanol at 20℃;
Stage #2: potassium hydrogensulfate In water pH=3 - 4;
71.3%
4-chloro-2-oxo-1-phenyl-1,2-dihydro-quinoline-3-carboxylic acid ethyl ester
220866-33-1

4-chloro-2-oxo-1-phenyl-1,2-dihydro-quinoline-3-carboxylic acid ethyl ester

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

o-toluidine
95-53-4

o-toluidine

ethyl 4-(2-methylphenylamino)-2-oxo-1-phenyl-1,2-dihydroquinoline-3-carboxylate

ethyl 4-(2-methylphenylamino)-2-oxo-1-phenyl-1,2-dihydroquinoline-3-carboxylate

Conditions
ConditionsYield
In chloroform69.5%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

[Au(SPyCONHCH(((CH2)2SMe))COOMe)(PPh3)]
1436394-05-6

[Au(SPyCONHCH(((CH2)2SMe))COOMe)(PPh3)]

[Au(SPyCONHCH(((CH2)2SMe))COOH)(PPh3)]
1436394-11-4

[Au(SPyCONHCH(((CH2)2SMe))COOH)(PPh3)]

Conditions
ConditionsYield
Stage #1: [Au(SPyCONHCH(((CH2)2SMe))COOMe)(PPh3)] With lithium hydroxide In methanol at 20℃;
Stage #2: potassium hydrogensulfate In water pH=3 - 4;
69.5%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

benzyl bromide
100-39-0

benzyl bromide

tert-butyl [(1R)-1-(hydroxymethyl)-2-methylpropyl]carbamate
79069-14-0, 106391-87-1

tert-butyl [(1R)-1-(hydroxymethyl)-2-methylpropyl]carbamate

N-TERT-BUTOXYCARBONYL-O-BENZYL-(D)-VALINOL
144570-06-9

N-TERT-BUTOXYCARBONYL-O-BENZYL-(D)-VALINOL

Conditions
ConditionsYield
In water; N,N-dimethyl-formamide69%
In water; N,N-dimethyl-formamide69%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

[Au(SPyCO(C4H7N)COOMe)(PPh3)]
1436394-06-7

[Au(SPyCO(C4H7N)COOMe)(PPh3)]

[Au(SPyCO(C4H7N)COOH)(PPh3)]
1436394-12-5

[Au(SPyCO(C4H7N)COOH)(PPh3)]

Conditions
ConditionsYield
Stage #1: [Au(SPyCO(C4H7N)COOMe)(PPh3)] With lithium hydroxide In methanol at 20℃;
Stage #2: potassium hydrogensulfate In water pH=3 - 4;
68.3%
potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

potassium pyrosulfate

potassium pyrosulfate

Conditions
ConditionsYield
byproducts: H2O; heating from 230 °C to 350 °C ; 30-40 mm Hg;68%
byproducts: H2O; heating from 230 °C to 350 °C ; 30-40 mm Hg;68%
heating to red heat;
2-Mercapto-4-phenylthiazole
2103-88-0

2-Mercapto-4-phenylthiazole

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

p-nitrobenzyl (5R,6R)-6-((S)-1-tert-butyldimethylsilyloxypropyl)-2-methylsulfinylpenem-3-carboxylate

p-nitrobenzyl (5R,6R)-6-((S)-1-tert-butyldimethylsilyloxypropyl)-2-methylsulfinylpenem-3-carboxylate

ethyl acetate n-hexane

ethyl acetate n-hexane

p-nitrobenzyl (5R,6R)-6-((S)-1-tert-butyldimethylsilyloxypropyl)-2-(4-phenylthiazol-2-yl)thiopenem-3-carboxylate

p-nitrobenzyl (5R,6R)-6-((S)-1-tert-butyldimethylsilyloxypropyl)-2-(4-phenylthiazol-2-yl)thiopenem-3-carboxylate

Conditions
ConditionsYield
With sodium chloride; sodium hydrogencarbonate In tetrahydrofuran66%
1,8-diaza-bicyclo[5.4.0]undecene

1,8-diaza-bicyclo[5.4.0]undecene

potassium hydrogensulfate
7646-93-7

potassium hydrogensulfate

(2R)-2-[(1R,7AR)-octahydro-4-trimethylsilyloxy-7a-methyl-1H-inden-1-yl]-iodopropane

(2R)-2-[(1R,7AR)-octahydro-4-trimethylsilyloxy-7a-methyl-1H-inden-1-yl]-iodopropane

tributylphosphine
998-40-3

tributylphosphine

(4S)-4-tert-butyldimethylsilyloxycyclopent-2-en-1-one
56745-67-6, 61305-35-9, 61740-33-8, 61305-36-0

(4S)-4-tert-butyldimethylsilyloxycyclopent-2-en-1-one

(4S)-4-{(2R)-2-[(1R,7AR)-octahydro-4-trimethylsilyloxy-7a-methyl-1H-inden-1-yl]-propyl}-2-cyclopenten-1-one

(4S)-4-{(2R)-2-[(1R,7AR)-octahydro-4-trimethylsilyloxy-7a-methyl-1H-inden-1-yl]-propyl}-2-cyclopenten-1-one

Conditions
ConditionsYield
With ammonium chloride; tert.-butyl lithium; sodium hydrogencarbonate In tetrahydrofuran; hexane; dichloromethane50%

7646-93-7Relevant articles and documents

1H and 39K nuclear magnetic resonance relaxation study in a KHSO4 single crystal

Lim, Ae Ran,Shin, Hee Won,Jeong, Dong Young

, p. 1308 - 1309 (2003)

-

Crist, R. H.

, p. 3939 (1932)

Kailan, A.,Olbrich, L.

, (1926)

Comparative thermoanalytical investigation of the cross-linking behaviour of three different paraffin waxes in the presence of potassium persulphate

Luyt,Ishripersadh,Timm

, p. 55 - 67 (1999)

The cross-linking of three different paraffin waxes - a hard oxidised wax, a medium wax, and a hard wax with narrow molar mass distribution - in the presence of potassium persulphate (PPS) was investigated thermoanalytically. DSC and TG curves for untreated waxes and waxes treated with different amounts of PPS were obtained and the observations were compared with gel content data obtained through gravimetric analysis. Although initial indications were that cross-linking did occur, reheat curves of wax/PPS mixtures as well as gel content data showed that no cross-linking occurred. It was, however, found that PPS most probably decomposed into KHSO4 and that this decomposition gave rise to functionalisation of the waxes.

Friend, J. A. N.

, p. 1092 - 1102 (1906)

Synthesis, crystal structure, and vibrational spectra of M 4V2O3(SO4)4 (M = K, Rb, Cs)

Krasil'Nikov,Tyutyunnik,Zubkov,Berger,Perelyaeva, L. Ya.,Baklanova

, p. 491 - 500 (2011/08/08)

Synthesis was performed and physicochemical properties were studied for the M4V2O3(SO4)4 complexes, where M = K, Rb, or Cs. Their crystal structures were determined using the set of data from X-ray diffraction and neutron diffraction studies. All compounds crystallize in a triclinic lattice (space group P1, Z = 2) with the parameters: a = 7.7688(2), 7.8487(1), 8.1234(1) ?; b = 10.4918(3), 10.8750(2), 11.1065(1) ?; c = 11.9783(4), 12.1336(2), and 11.8039(1) ?; α = 76.600(2)°, 77.910(1)°, 79.589(1)°; β = 75.133(2)°, 75.718(1)°, 87.939(1)°; γ = 71.285(2)°, 72.189(1)°, 75.567(1)°; V = 881.78(5), 945.42(3), 1014.34(2) ?3 for K, Rb, Cs, respectively. The structure of M4V2O 3(SO4)4 was found to be formed by discrete complex anions V2O3(SO4) 4 4- incorporating two oxygen-bridged vanadium atoms in a distorted octahedral oxygen environment. The sulfate groups are coordinated by the vanadium atoms in the chelating mode with a large scatter of S-O interatomic distances and OSO angles. Every VO6 octahedron has a short terminal vanadium-oxygen bond with a length of about 1.6?. The V2O 3(SO4) 4 4- complex anions in potassium and rubidium compounds differ from that in Cs4V 2O3(SO4)4 in the type of symmetry and mutual spatial orientation. The vibrational spectra were presented and interpreted in line with the structural analysis data.

Method for preparing metal cyanide catalyst complexes using partially miscible complexing agents

-

, (2008/06/13)

Double metal cyanide catalysts (DMC) are complexed with complexing agents that are miscible in poly(propylene oxide) at higher temperatures and immiscible at lower temperatures. The complexing agent is a poly(ethylene oxide) polymer or a copolymer having a poly(ethylene oxide) block. The catalyst is easily removed from a polyether polyol.

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