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Sodium benzaldehyde-o-sulfonate is a chemical compound that consists of a benzaldehyde molecule with a sulfonate group attached to the ortho position. It is a water-soluble compound and is often used in aqueous solutions for its various applications in the chemical industry.

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  • 91-25-8 Structure
  • Basic information

    1. Product Name: sodium benzaldehyde-o-sulfonate
    2. Synonyms: Benzaldehyde-o-sulfonic acid;o-Sulfobenzaldehyde;2-methanoylbenzenesulfonic acid;sodium benzaldehyde-o-sulfonate
    3. CAS NO:91-25-8
    4. Molecular Formula: C7H6O4S
    5. Molecular Weight: 208.16697
    6. EINECS: 202-053-7
    7. Product Categories: N/A
    8. Mol File: 91-25-8.mol
  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: °Cat760mmHg
    3. Flash Point: °C
    4. Appearance: /
    5. Density: 1.503g/cm3
    6. Refractive Index: N/A
    7. Storage Temp.: N/A
    8. Solubility: N/A
    9. CAS DataBase Reference: sodium benzaldehyde-o-sulfonate(CAS DataBase Reference)
    10. NIST Chemistry Reference: sodium benzaldehyde-o-sulfonate(91-25-8)
    11. EPA Substance Registry System: sodium benzaldehyde-o-sulfonate(91-25-8)
  • Safety Data

    1. Hazard Codes: N/A
    2. Statements: N/A
    3. Safety Statements: N/A
    4. WGK Germany:
    5. RTECS:
    6. HazardClass: N/A
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 91-25-8(Hazardous Substances Data)

91-25-8 Usage

Uses

Used in Organic Synthesis:
Sodium benzaldehyde-o-sulfonate is used as an intermediate in the synthesis of various organic compounds. Its unique structure allows it to be a versatile building block for the creation of a wide range of chemical products.
Used in Dye and Pigment Production:
Sodium benzaldehyde-o-sulfonate is used as a dye precursor in the production of dyes and pigments. Its ability to form various organic compounds makes it a valuable component in the development of new dyes and pigments with specific properties.
Used in Chemical Industry:
Sodium benzaldehyde-o-sulfonate is used in various applications within the chemical industry, taking advantage of its water solubility and reactivity. Its use in this sector highlights its importance in the synthesis of a diverse range of chemical products.
Safety Precautions:
It is important to handle sodium benzaldehyde-o-sulfonate with care due to its potentially hazardous nature. Proper safety precautions should be taken when working with this compound to ensure the safety of individuals and the environment.

Check Digit Verification of cas no

The CAS Registry Mumber 91-25-8 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 9 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 91-25:
(4*9)+(3*1)+(2*2)+(1*5)=48
48 % 10 = 8
So 91-25-8 is a valid CAS Registry Number.
InChI:InChI=1/C7H6O4S.Na.2H2O/c8-5-6-3-1-2-4-7(6)12(9,10)11;;;/h1-5H,(H,9,10,11);;2*1H2/q;+1;;/p-1

91-25-8SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-formylbenzenesulfonic acid

1.2 Other means of identification

Product number -
Other names o-Sulfobenzaldehyde

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
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:91-25-8 SDS

91-25-8Synthetic route

2-chloro-benzaldehyde
89-98-5

2-chloro-benzaldehyde

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

Conditions
ConditionsYield
Stage #1: 2-chloro-benzaldehyde With tert-butylammonium hydrogen sulphate In water at 60℃; under 760.051 Torr; for 0.166667h;
Stage #2: With potassium pyrosulfite In water at 70℃; under 760.051 Torr; for 12.5h; Reagent/catalyst;
88.9%
With sodium sulfite at 190 - 200℃;
o-toluenesulfonic acid
88-20-0

o-toluenesulfonic acid

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

Conditions
ConditionsYield
With manganese(IV) oxide; sulfuric acid
2,2″-([1,1′-biphenyl]-4,4′-diyldi-2,1-ethenediyl)bis-benzenesulfonic acid
38775-22-3

2,2″-([1,1′-biphenyl]-4,4′-diyldi-2,1-ethenediyl)bis-benzenesulfonic acid

A

4,4'-diformylbiphenyl
66-98-8

4,4'-diformylbiphenyl

B

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

C

4-Aldehyde-4'-(2-sulfostyryl)biphenyl

4-Aldehyde-4'-(2-sulfostyryl)biphenyl

Conditions
ConditionsYield
With oxygen; phenol In phosphate buffer at 25℃; pH=8.0; Kinetics; Quantum yield; Further Variations:; Reagents; source of irradiation; Decomposition; Photolysis;
water
7732-18-5

water

2-chloro-benzaldehyde
89-98-5

2-chloro-benzaldehyde

sulfite(2-)
14265-45-3

sulfite(2-)

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

Conditions
ConditionsYield
at 110℃; unter Druck;
stilbene-disulfonic acid-(2.2')

stilbene-disulfonic acid-(2.2')

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

Conditions
ConditionsYield
With permanganate(VII) ion
trans-stilbene-disulfonic acid-(2,2')
28097-15-6

trans-stilbene-disulfonic acid-(2,2')

KMnO4

KMnO4

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

1,10-phenanthroline-5,6-dione
27318-90-7

1,10-phenanthroline-5,6-dione

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

2-(2-sulfophenyl)imidazo(4,5-f)(1,10)-phenanthroline

2-(2-sulfophenyl)imidazo(4,5-f)(1,10)-phenanthroline

Conditions
ConditionsYield
With ammonium acetate; acetic acid at 100℃; for 0.333333h; Microwave irradiation;87%
2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

1,2-diamino-benzene
95-54-5

1,2-diamino-benzene

2-(1H-benzimidazol-2-yl)-benzenesulfonic acid
63254-90-0

2-(1H-benzimidazol-2-yl)-benzenesulfonic acid

Conditions
ConditionsYield
With oxygen at 20℃; for 3h; pH=6; aq. phosphate buffer;80%
2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

3-(2-aminophenyl)-6-(4-isopropylphenyl)-1,2,4-triazin-5(2H)-one

3-(2-aminophenyl)-6-(4-isopropylphenyl)-1,2,4-triazin-5(2H)-one

2-[3-(4-isopropylphenyl)-2-oxo-6,7-dihydro-2H-[1,2,4]-triazino[2,3-c]quinazolin-6-yl]benzenesulfonic acid

2-[3-(4-isopropylphenyl)-2-oxo-6,7-dihydro-2H-[1,2,4]-triazino[2,3-c]quinazolin-6-yl]benzenesulfonic acid

Conditions
ConditionsYield
With acetic acid for 3h; Reflux;68%
2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

acetone
67-64-1

acetone

C10H10O4S

C10H10O4S

Conditions
ConditionsYield
With water; sodium hydroxide In methanol60%
methyl-3-pyridylketone
350-03-8

methyl-3-pyridylketone

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

2-(3,2':6',3''-terpyridin-4'-yl)benzenesulfonic acid

2-(3,2':6',3''-terpyridin-4'-yl)benzenesulfonic acid

Conditions
ConditionsYield
With ammonium hydroxide; sodium hydroxide In ethanol at 0 - 50℃; for 27h;44%
5-chloro-indolin-2-one
17630-75-0

5-chloro-indolin-2-one

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

BSc3922
1227623-24-6

BSc3922

Conditions
ConditionsYield
With piperidine In methanol at 100℃; for 0.5h; Knoevenagel condensation; Microwave irradiation; optical yield given as %de;43%
potassium cyanide

potassium cyanide

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

ammonium carbonate
506-87-6

ammonium carbonate

C9H8N2O5S
1318796-74-5

C9H8N2O5S

Conditions
ConditionsYield
In methanol; water at 50 - 60℃; for 3h; Bucherer-Bergs reaction;42%
antipyrine
60-80-0

antipyrine

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

2-[bis-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-methyl]-benzenesulfonic acid

2-[bis-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-methyl]-benzenesulfonic acid

Conditions
ConditionsYield
With hydrogenchloride
nitromethane
75-52-5

nitromethane

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

2-(2-nitro-vinyl)-benzenesulfonic acid ; sodium-salt

2-(2-nitro-vinyl)-benzenesulfonic acid ; sodium-salt

Conditions
ConditionsYield
With potassium hydroxide
With methanol; sodium hydroxide
3-methylsalicylic acid
83-40-9

3-methylsalicylic acid

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

eriochrome cyanine R
14674-54-5

eriochrome cyanine R

Conditions
ConditionsYield
With sulfuric acid at 120 - 125℃; Und oxydiert die erhaltene Leukoverbindung mit Nitrosylschwefelsaeure bei 20grad;
With sulfuric acid at 120 - 125℃; Und oxydiert die erhaltene Leukoverbindung mit 4-Nitro-phenol in konz.Schwefelsaeure bei 90-100grad;
1,2,4-triacetoxybenzene
613-03-6

1,2,4-triacetoxybenzene

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

1,1-dioxo-1λ6-spiro[benz[c][1,2]oxathiol-3,9'-xanthene]-2',3',6',7'-tetraol
53510-54-6

1,1-dioxo-1λ6-spiro[benz[c][1,2]oxathiol-3,9'-xanthene]-2',3',6',7'-tetraol

Conditions
ConditionsYield
With hydrogenchloride; ethanol anschliessend Hydrolyse bei pH 4;
2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

4-(N-ethyl-anilinomethyl)-benzenesulfonic acid
92-60-4

4-(N-ethyl-anilinomethyl)-benzenesulfonic acid

2-{4,4'-bis-[ethyl-(3-sulfo-benzyl)-amino]-α-hydroxy-benzhydryl}-benzenesulfonic acid

2-{4,4'-bis-[ethyl-(3-sulfo-benzyl)-amino]-α-hydroxy-benzhydryl}-benzenesulfonic acid

Conditions
ConditionsYield
Oxydation der erhaltenen Leukoverbindung mit Bleidioxyd in salzsaurer Loesung;
Oxydation der erhaltenen Leukoverbindung mit Bleidioxyd in salzsaurer Loesung;
2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

ortho-cresol
95-48-7

ortho-cresol

2-(4,4'-dihydroxy-3,3'-dimethyl-benzhydryl)-benzenesulfonic acid
871593-39-4

2-(4,4'-dihydroxy-3,3'-dimethyl-benzhydryl)-benzenesulfonic acid

Conditions
ConditionsYield
With sulfuric acid
2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

N,N-dimethyl-aniline
121-69-7

N,N-dimethyl-aniline

2-(4,4'-bis-dimethylamino-α-hydroxy-benzhydryl)-benzenesulfonic acid
10165-84-1

2-(4,4'-bis-dimethylamino-α-hydroxy-benzhydryl)-benzenesulfonic acid

Conditions
ConditionsYield
With sulfuric acid man macht alkalisch, saeuert mit Salzsaeure oder Essigsaeure an und oxydiert die erhaltene Leukoverbindung mit Bleidioxyd;
2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

3-diethylaminophenol
91-68-9

3-diethylaminophenol

acid

acid

bis-diethylamino-dioxy-triphenylmethane-sulfonic acid

bis-diethylamino-dioxy-triphenylmethane-sulfonic acid

sulfuric acid
7664-93-9

sulfuric acid

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

2,4,6-Trichlorophenol
88-06-2

2,4,6-Trichlorophenol

3-<2,4,6-Trichlor-3-hydroxy-phenyl>-2,1,3-benzoxathiol-S,S-dioxid
99585-51-0

3-<2,4,6-Trichlor-3-hydroxy-phenyl>-2,1,3-benzoxathiol-S,S-dioxid

sulfuric acid
7664-93-9

sulfuric acid

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

ortho-cresol
95-48-7

ortho-cresol

2-(4,4'-dihydroxy-3,3'-dimethyl-benzhydryl)-benzenesulfonic acid
871593-39-4

2-(4,4'-dihydroxy-3,3'-dimethyl-benzhydryl)-benzenesulfonic acid

phosphorus pentachloride
10026-13-8, 874483-75-7

phosphorus pentachloride

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

saccharin
81-07-2

saccharin

Conditions
ConditionsYield
Erhitzen des entstehenden, bei 114grad schmelzende Verbindung mit Ammoniak unter Druck auf 100-150grad;
2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

water
7732-18-5

water

KOH

KOH

A

benzoic acid
65-85-0

benzoic acid

B

salicylic acid
69-72-7

salicylic acid

Conditions
ConditionsYield
at 220 - 240℃;
2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

m-diethylamino-phenol

m-diethylamino-phenol

bis-diethylamino-dioxy-triphenylmethane-monosulfonic acid

bis-diethylamino-dioxy-triphenylmethane-monosulfonic acid

3-methylsalicylic acid
83-40-9

3-methylsalicylic acid

2-sulfobenzaldehyde
91-25-8

2-sulfobenzaldehyde

Eriochrome Cyanin

Eriochrome Cyanin

Conditions
ConditionsYield
Oxydation der entstehenden Leukoverbindung;

91-25-8Relevant articles and documents

Method for synthesizing O-sulfonic acid benzaldehyde under normal pressure

-

Paragraph 0025-0049, (2020/03/09)

The invention relates to a method for synthesizing o-sulfonic acid benzaldehyde under normal pressure. The method comprises the following steps: by using o-chlorobenzaldehyde as a raw material and metasulfite as a sulfonating agent, carrying out sulfonation reaction under the catalytic action of tert-butylamine salt or quaternary ammonium salt to generate benzaldehyde-2-sulfonate, and acidifying to obtain the o-benzaldehyde sulfonate. The preparation method is mild in condition, capable of preparing the o-sulfonic acid benzaldehyde at normal pressure and low temperature, few in side reaction,high in yield, simple in post-treatment, high in safety, low in cost, simple to operate and easy to control in industrial production.

Degradation of fluorescent whitening agents in sunlit natural waters

Kramer,Canonica,Hoigne,Kaschig

, p. 2227 - 2234 (2007/10/03)

Stilbene-type fluorescent whitening agents (FWAs), such as the distyryl biphenyl (DSBP) and the diaminostilbene types (DAS 1 and DAS 2), are commonly used in detergents and papers. They are not readily biodegradable, but due to their ability to absorb part of the terrestrial sunlight, they can be photochemically degraded in natural surface waters. Following a fast preceding photoisomerization, the three compounds are degraded by direct photochemical processes yielding mainly aldehydes and alcohols. Their degradation quantum yields are similar, about 10"SUP -4" . Nevertheless, in samples of a eutrophic Swiss lake water, DSBP is photochemically degraded three times faster (t"SUB 1/2" =87 min) in summer noon terrestrial sunlight at 25 degrees C than DAS 1 and DAS 2 (t"SUB 1/2" =278 and 313 min) because of a higher rate of sunlight absorption by the DSBP isomer mixture. All FWAs are degraded faster if the oxygen concentration is increased. Dissolved natural organic material partly inhibits the degradation of DSBP in the reaction with molecular oxygen. The behavior of these compounds illustrates the influence of a preceding isomer equilibrium on degradation rate coefficients. (Authors)

Certain derivatives of particular 3-thiolated cephalosporins

-

, (2008/06/13)

Compounds of the formula STR1 wherein A is hydrogen, hydroxy, methyl or methoxy, R1 is hydrogen, sodium or potassium, R2 is carboxyl or an aliphatic, aromatic or heterocyclic radical to which there is also attached a strongly acidic group in the form of its sodium or potassium salt, and R3 is 1,2,3-triazol-5-yl, such group being unsubstituted or substituted with one or two lower alkyl groups of one to four carbon atoms are prepared by reacting the appropriate aldehyde with the corresponding amphoteric cephalosporin. A preferred product has the structure STR2

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