13823-50-2

Basic information

• Product Name: POTASSIUM SULFAMATE
• Synonyms: AMINOSULFONIC ACID POTASSIUM SALT;sulfamicacid,monopotassiumsalt;SULFAMIC ACID POTASSIUM SALT;POTASSIUM SULFAMATE;POTASSIUM AMIDOSULFATE;potassium sulphamate;POTASSIUMSULFAMATE,REAGENT;Amidosulfonic acid potassium salt
• CAS NO: 13823-50-2
• Molecular Formula: H₂NO₃S*K
• Molecular Weight: 135.18
• EINECS: 237-515-7
• Product Categories: Inorganics;Classes of Metal Compounds;K (Potassium) Compounds (excluding simple potassium salts);Typical Metal Compounds
• Mol File: 13823-50-2.mol
• Article Data: 5

Chemical Properties

• Appearance: White/Crystalline Solid
• Refractive Index: 1.515
• Water Solubility: Soluble in water.
• Sensitive: Hygroscopic
• CAS DataBase Reference: POTASSIUM SULFAMATE(CAS DataBase Reference)
• NIST Chemistry Reference: POTASSIUM SULFAMATE(13823-50-2)
• EPA Substance Registry System: POTASSIUM SULFAMATE(13823-50-2)

Safety Data

• Statements: 20/21-36/37/38-65
• Safety Statements: 26-36/37/39
• TSCA: Yes
• Hazardous Substances Data: 13823-50-2(Hazardous Substances Data)

Usage

Uses

Potassium sulfamate is used as a food additive, used in water treatment and as a cleaning agents. It is used in the synthesis of heterocyclic nitramines.

InChI:InChI=1/K.H3NO3S/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1

Synthetic route

aminosulfonic acid (5329-14-6) + potassium hydroxide → potassium sulfamate (13823-50-2)

Conditions	Yield
In water	86%

aminosulfonic acid (5329-14-6) → potassium sulfamate (13823-50-2)

Conditions	Yield
With potassium hydroxide In water at 20℃; for 0.416667h;	86%

aminosulfonic acid (5329-14-6) + potassium carbonate (584-08-7) → potassium sulfamate (13823-50-2)

Conditions	Yield
In water crystn. from components soln. on slow solvent evapn. at room temp.;
In water K2CO3 added in small portions with constant stirring to 30% sulphamic acid soln. at 20°C; left to stand for 1.5-2.0 h; filtered; crystd. at -8°C; decanted; washed with water; recrystd.; washed with water; dried;
In water grown by slow evapn. over period of 60-65 d; soln. of K2CO3 and sulfamicacid in double distd. H2O at temp. 305 K;
In water grown from supersaturated aq. soln. of salt by slow evapn. technique over period of 60-65 d; soln. prepd. by dissolving of K2CO3 and sulphamic acid in water; temp. of bath maintained const. at 305 K; XRD;

potassium sulfate + Ba-amidosulfonate → potassium sulfamate (13823-50-2)

Conditions	Yield
In neat (no solvent)
In neat (no solvent)

potassium imidosulfonate → potassium sulfamate (13823-50-2)

Conditions	Yield
With water In water boilng with small water pptn. with CaCO3 filtration from K2SO4; crystn.;
With H20 In water boilng with small water pptn. with CaCO3 filtration from K2SO4; crystn.;

potassium nitrilosulfonate → potassium imidosulfonate + potassium sulfamate (13823-50-2)

Conditions	Yield
With water In water 40-50°C, slowly in cold water;
With H2O In water 40-50°C, slowly in cold water;

potassium sulfate + potassium nitrilosulfonate → potassium sulfamate (13823-50-2)

Conditions	Yield
With water In water boiling with small water pptn. with CaCO3, filtration from K2SO4; evapn.;
With H20 In water boiling with small water pptn. with CaCO3, filtration from K2SO4; evapn.;

dipotassium N-nitroso-N-oxidoamine-N-sulfonate → potassium sulfamate (13823-50-2)

Conditions	Yield
With sodium amalgam
With Na-amalgam

sodium dithionite + potassium nitrite (7758-09-0) → potassium sulfamate (13823-50-2)

Conditions	Yield
In water no reaction of an alkaline soln. of Na2S2O4 with KNO2 on standing on air;;	0%
In water

sodium dithionite + potassium nitrite (7758-09-0) → sodium hydrogen sulfate (7681-38-1) + potassium sulfamate (13823-50-2) + sodium hydroxide (1310-73-2)

Conditions	Yield
In water reaction of an aq. soln. of Na2S2O4 with KNO2 on standing on air; at first formation of NaHSO3; then reaction of NaHSO3 forming KNH2SO3, NaOH and NaHSO4;;
In water

sodium dithionite + potassium nitrite (7758-09-0) → sodium hydrogen sulfate (7681-38-1) + potassium sulfamate (13823-50-2) + sodium hydroxide (1310-73-2) + dinitrogen monoxide (10024-97-2)

Conditions	Yield
In water byproducts: N2O3; reaction of an acidic aq. soln. of Na2S2O4 with KNO2 on standing on air; at first formation of NaHSO3; then reaction of NaHSO3 forming KNH2SO3, NaOH and NaHSO4; reduction of N2O3 forming N2O;;
In water

2K(1+)*ON2OSO3(2-) → potassium sulfamate (13823-50-2)

Conditions	Yield
With K amalgam In not given byproducts: NH3;
With K amalgam

potassium sulfamate (13823-50-2) + nitric acid (7697-37-2) → dinitramide potassium salt

Conditions	Yield
With sulfuric acid at -45 - -40℃;	53%
With sulfuric acid at -45 - -40℃;	53%

potassium sulfamate (13823-50-2) + sulfur trioxide (7446-11-9) → SO2(NHSO3)2(2-)*2K(1+)=SO2(NHSO3K)2

Conditions	Yield
byproducts: H2SO4;

potassium sulfamate (13823-50-2) → potassium imidosulfonate

Conditions	Yield
In neat (no solvent) 260 - 280 °C;
350°C;
In neat (no solvent) byproducts: NH3; at 350°C;

potassium sulfamate (13823-50-2) → 3K(1+)*SO3NSO3(3-)*H2O=(KSO3)2NK*H2O

Conditions	Yield
In neat (no solvent) byproducts: H2O; at 100°C;
In neat (no solvent) byproducts: H2O; at 100°C;

potassium sulfamate (13823-50-2) → potassium bromamidosulfonate

Conditions	Yield
With hypobromous acid In water evapn. above 40°C;
With hypobromous acid In water evapn. above 40°C;

potassium sulfamate (13823-50-2) → potassium chloramidosulfonate

Conditions	Yield
With hypochloric acid In water mixing in equiv. amts. ,evapn. in vac. or pptg. with alcohol;

potassium sulfamate (13823-50-2) → sulfite(1-) radical (12210-38-7)

Conditions	Yield
other Radiation; γ radiation;

potassium sulfamate (13823-50-2) + mercury(II) oxide → potassium amidosulfatomercurate(II)

Conditions	Yield
In not given byproducts: H2O; in hot, strong alkaline soln.;
In not given byproducts: H2O; in hot, strong alkaline soln.;

potassium sulfamate (13823-50-2) + nitromethane (75-52-5) + sulfur trioxide (7446-11-9) → sulfurylamidobis(sulfuric) acid (13776-48-2)

Conditions	Yield
In nitromethane byproducts: potassium trisulfate; addn. of KSO3NH2 (pulverized) to cooled (NaCl/ice) soln. of SO3 in nitromethane (shaking); formation of voluminous ppt. (potassium trisulfate); left for 3h in refrigerator;; filtration (exclusion of moisture); evacuation (removal of excess SO3); distillation (from nitromethane/common temps./reduced pressure); heating (4h/70°C/removal of further SO3); not absolutely pure (HSO3)2NHSO2NH yielded;;	30-50
In nitromethane byproducts: potassium trisulfate; addn. of KSO3NH2 (pulverized) to cooled (NaCl/ice) soln. of SO3 in nitromethane (shaking); formation of voluminous ppt. (potassium trisulfate); left for 3h in refrigerator;; filtration (exclusion of moisture); evacuation (removal of excess SO3); distillation (from nitromethane/common temps./reduced pressure); heating (4h/70°C/removal of further SO3); not absolutely pure (HSO3)2NHSO2NH yielded;;	30-50

potassium sulfamate (13823-50-2) + mercury dichloride → potassium amidosulfatomercurate(II)

Conditions	Yield
With hydroxide In not given byproducts: Cl(1-), H2O; in hot, strong alkaline soln.;
With OH(1-) In not given byproducts: Cl(1-), H2O; in hot, strong alkaline soln.;

potassium sulfamate (13823-50-2) + silver nitrate → trisilver (I) amidosulfate * water

Conditions	Yield
In potassium hydroxide crystallization on storing or stirring in the mother liquor;;	80-83
In ammonia crystallization on storing or stirring in the mother liquor;;	80-83

potassium sulfamate (13823-50-2) + silver(l) oxide (20667-12-3) → potassium disilver (I) amidosulfate

Conditions	Yield
In not given addition of an excess of Ag2O to a solution of KSO3NH2;;
In not given addition of an excess of Ag2O to a solution of KSO3NH2;;

potassium sulfamate (13823-50-2) + water-d2 (7789-20-0) → K(1+)*SO3ND2(1-) = KSO3ND2 (57116-93-5)

Conditions	Yield
In water-d2 a soln. of KSO3NH2 evapd. to drynessin a desiccator over CaCl2;

potassium sulfamate (13823-50-2) + nitric acid (7697-37-2) + potassium hydroxide + dinitramide salt → dinitramide potassium salt

Conditions	Yield
Stage #1: potassium sulfamate; nitric acid; dinitramide salt With sulfuric acid at -45 - 70℃; for 0.583333h; Stage #2: potassium hydroxide In water pH=7.5;	5.2 g

potassium sulfamate (13823-50-2) → dinitramide potassium salt

Conditions	Yield
With sulfuric acid; nitric acid at -45 - -40℃; for 0.5h; Inert atmosphere;

potassium sulfamate (13823-50-2) + nitric acid (7697-37-2) → ammonium dinitramide (114045-20-4)

Conditions	Yield
With sulfuric acid at -45 - -40℃; for 0.5h; Temperature;

Upstream product

• 5329-14-6 aminosulfonic acid 
• 584-08-7 potassium carbonate 
• 7758-09-0 potassium nitrite 

Relevant articles and documents

Synthesis, characterization and properties of a new energetic salt 2,4-diamino-6-methyl-1,3,5-triazine dinitramide

A new nitrogen-rich energetic salt, 2,4-diamino-6-methyl-1,3,5-triazine dinitramide, was synthesized by combining silver dinitramide and 2,4-diamino-6-methyl-1,3,5-triazine perchlorate. The structure of this new energetic salt was confirmed using single-crystal X-ray diffraction, elemental analysis, Fourier transform infrared spectrometry, ultraviolet–visible spectrophotometry, and nuclear magnetic resonance spectroscopy. The thermal stability was determined using differential scanning calorimetry, differential thermal analysis, and thermogravimetric tandem infrared spectrometry. Results showed that the target compound exhibits good thermal decomposition resistance of up to 470 K and has 59.1% mass loss with Ea = 118.2 kJ mol?1. Additionally, the detonation pressure and velocity obtained using Kamlet-Jacobs equations are 23 GPa and 8.2 km s?1, respectively. Sensitivity test was also attempted. The impact sensitivity of this new energetic salt is 11.5 J, which is superior to that of RDX (7.4 J).

Detection of elastic and electric conductivity anomalies in Potassium Sulphamate single crystal

Elastic anomalies in Potassium Sulphamate, (KNH2SO3), above room temperature were detected from temperature variation of elastic constants measured by ultrasonic Pulse Echo Overlap technique. Potassium Sulphamate has been reported to be a ferroelectric and piezo electric material. The elastic constants C11, C44, C55 and C66 have exhibited weak anomalies around 350 K. The DC conductivity measurement along a, b, and c axes also supports this conclusion.

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The thermal decomposition of molten CsSO3NH2, NH4SO3NH2, RbSO3NH2, TlSO3NH2, NaSO3NH2 and KSO3NH2 was studied by means of thermogravimetry. A different behaviour of decomposition of the K and Na salts on the one hand, and the other salts on the other, was found. While the decomposition of CsSO3NH2, NH4SO3NH2, RbSO3NH2 and TlSO3NH2 starts immediately on reaching the experimental temperature, the decomposition of the Na and K amidosulfonates starts after an incubation time. The activation energies of thermal decomposition of the salts studied were determined. Die thermische Zersetzung geschmolzener CsSO3NH2, NH4SO3NH2, RbSO3NH2, TISO3NH2, NaSO3NH2 und KSO3NH2 wurde thermogravimetrisch untersucht. Es ergab sich ein wesentlicher Unterschied zwischen der Zersetzung der K- und Na Salze einerseits und der anderen Amidosulfonate anderseits. Waehrend die Zersetzung der CsSO3NH2, NH4SO3NH2, RbSO3NH2 und TISO3NH2 sofort nach der Erreichung der Versuchstemperatur einsetzt, starlet die Zersetzung der Na- und K-Amidosulfonate erst nach einer Inkubationszeit. Es wurden die Aktivierungsenergien der thermischen Zersetzung der untersuchten Salze ermittelt.