ChemicalBook > CAS DataBase List > 2-Sulfobenzoic anhydride

2-Sulfobenzoic anhydride

Product Name
2-Sulfobenzoic anhydride
CAS No.
81-08-3
Chemical Name
2-Sulfobenzoic anhydride
Synonyms
1,1-dioxo-2,1;2-Sulfobenzoic anhyd;SULFOBENZOIC ANHYDRIDE;2-SULFOBENZOIC ANHYDRIDE;O-SULFOBENZOIC ANHYDRIDE;2-SULPHOBENZOIC ANHYDRIDE;2-SulfobenzoicAnhydride>2-SULFOBENZOIC ACID ANHYDRIDE;2-Sulfobenzoic Acid Anhydrade;o-Sulfobenzoic acid anhydride
CBNumber
CB4286815
Molecular Formula
C7H4O4S
Formula Weight
184.17
MOL File
81-08-3.mol
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2-Sulfobenzoic anhydride Property

Melting point:
116-124 °C
Boiling point:
184-186 °C18 mm Hg(lit.)
Density 
1.6114 (rough estimate)
refractive index 
1.6290 (estimate)
Flash point:
184-186°C/18mm
storage temp. 
Store below +30°C.
solubility 
soluble in Toluene
form 
Crystals or Crystalline Powder
color 
White to beige
Sensitive 
Moisture Sensitive
BRN 
139893
CAS DataBase Reference
81-08-3(CAS DataBase Reference)
NIST Chemistry Reference
2-Sulfobenzoic acid cyclic anhydride(81-08-3)
EPA Substance Registry System
3H-2,1-Benzoxathiol-3-one, 1,1-dioxide (81-08-3)
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Safety

Hazard Codes 
C
Risk Statements 
34-20/21/22
Safety Statements 
22-24/25-45-36/37/39-26
RIDADR 
2923
WGK Germany 
3
F 
21
TSCA 
Yes
HS Code 
29163900
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
8.41501
Product name
2-Sulfobenzoic anhydride
Purity
for synthesis
Packaging
25G
Price
$112
Updated
2024/03/01
TCI Chemical
Product number
S0124
Product name
2-Sulfobenzoic Anhydride
Purity
>97.0%(T)
Packaging
25g
Price
$128
Updated
2024/03/01
TCI Chemical
Product number
S0124
Product name
2-Sulfobenzoic Anhydride
Purity
>97.0%(T)
Packaging
100g
Price
$384
Updated
2024/03/01
Alfa Aesar
Product number
A13314
Product name
2-Sulfobenzoic anhydride, 94%
Packaging
25g
Price
$62.65
Updated
2024/03/01
Alfa Aesar
Product number
A13314
Product name
2-Sulfobenzoic anhydride, 94%
Packaging
100g
Price
$168.65
Updated
2024/03/01
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2-Sulfobenzoic anhydride Chemical Properties,Usage,Production

Chemical Properties

White to beige crystals or crystalline powder

Uses

Polymerization inhibitor.

Purification Methods

The anhydride is purified by distillation in a vacuum and readily solidifies to a crystalline mass on cooling. [Heitman J Am Chem Soc 34 1594 1912.] Alternatively purify it by dissolving it in the minimum volume of toluene and refluxing for 2hours using a Dean-Stark trap. Evaporate under reduced pressure and distil the anhydride at 18mm. It is then recrystallised three times from its own weight of dry *C6H6. It is sensitive to moisture and should be stored in the dark in a dry atmosphere. The O-methyloxime has m 110-112o [Levy Tetrahedron Lett 3289 1972]. If the sample has hydrolysed extensively (presence of OH band in the IR) then treat with an equal bulk of SOCl2, reflux it for 3hours (CaCl2 tube), evaporate and distil the residue in a vacuum, then recrystallise it from *C6H6, Et2O/*C6H6 or CHCl3 (EtOH free by passing through Al2O3, or standing over CaCl2). [Clarke & Dreger Org Synth Coll Vol I 495 1941.] It is used for modifying -amino functions of lysyl residues in proteins [Bagree et al. FEBS Lett 120 275 1980]. [Beilstein 19 I 659, 19 II 137, 19 III/IV 1641, 19/4 V 215.]

2-Sulfobenzoic anhydride Preparation Products And Raw materials

Raw materials

Preparation Products

Chlorophenol Red Phenol Red
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2-Sulfobenzoic anhydride Suppliers

Austria 1 Belgium 4 China 135 Czech Republic 3 Europe 2 France 1 Germany 7 India 6 Japan 5 Poland 1 Switzerland 3 Ukraine 1 United Kingdom 11 United States 36 Global 216
HBCChem, Inc.
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View Lastest Price from 2-Sulfobenzoic anhydride manufacturers

WUHAN FORTUNA CHEMICAL CO., LTD
Product
2-Sulfobenzoic anhydride 81-08-3
Price
US $1.00/KG
Min. Order
1KG
Purity
90%
Supply Ability
1ton/month
Release date
2021-05-28
Hebei Mojin Biotechnology Co., Ltd
Product
2-Sulfobenzoic anhydride 81-08-3
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
50000KG/month
Release date
2024-11-14
Nanjing jinheyou Trading Co., Ltd.
Product
2-Sulfobenzoic anhydride 81-08-3
Price
US $0.00/g
Min. Order
1g
Purity
99.5%min
Supply Ability
20kg/week
Release date
2019-10-28

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