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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;o-Sulfobenzoic acid anhydride;2-Sulfobenzoic Acid Anhydrade
CBNumber:
CB4286815
Molecular Formula:
C7H4O4S
Molecular Weight:
184.17
MDL Number:
MFCD00005879
MOL File:
81-08-3.mol
MSDS File:
SDS
Last updated:2023-04-23 13:52:06

2-Sulfobenzoic anhydride Properties

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)
FDA UNII 0SWH68IQ5W
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)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P280a-P304+P340-P305+P351+P338-P405-P501a
Hazard Codes  C
Risk Statements  34-20/21/22
Safety Statements  22-24/25-45-36/37/39-26
RIDADR  2923
WGK Germany  3
21
TSCA  Yes
HS Code  29163900
NFPA 704
1
3 1

2-Sulfobenzoic anhydride price More Price(22)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 8.41501 2-Sulfobenzoic anhydride for synthesis 81-08-3 25G $112 2024-03-01 Buy
TCI Chemical S0124 2-Sulfobenzoic Anhydride >97.0%(T) 81-08-3 25g $128 2024-03-01 Buy
TCI Chemical S0124 2-Sulfobenzoic Anhydride >97.0%(T) 81-08-3 100g $384 2024-03-01 Buy
Alfa Aesar A13314 2-Sulfobenzoic anhydride, 94% 81-08-3 25g $62.65 2024-03-01 Buy
Alfa Aesar A13314 2-Sulfobenzoic anhydride, 94% 81-08-3 100g $168.65 2024-03-01 Buy
Product number Packaging Price Buy
8.41501 25G $112 Buy
S0124 25g $128 Buy
S0124 100g $384 Buy
A13314 25g $62.65 Buy
A13314 100g $168.65 Buy

2-Sulfobenzoic anhydride Chemical Properties,Uses,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

Global( 200)Suppliers
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Henan Tianfu Chemical Co.,Ltd.
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View Lastest Price from 2-Sulfobenzoic anhydride manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
2-Sulfobenzoic anhydride pictures 2021-09-29 2-Sulfobenzoic anhydride
81-08-3
US $1.00 / KG 1KG 90% 1ton/month WUHAN FORTUNA CHEMICAL CO., LTD
2-Sulfobenzoic anhydride pictures 2019-11-08 2-Sulfobenzoic anhydride
81-08-3
US $0.00 / g 1g 99.5%min 20kg/week Nanjing jinheyou Trading Co., Ltd.
o-Sulfobenzoic acid anhydride 2-SULFOBENZOIC ACID CYCLIC ANHYDRIDE, TECH. 90% o-Sulfobenzoic anhydride, tech., 93% 2-Sulfobenzoic acid anhydrade(2-Sulfobenzoic acid unhydrate) 1,1-Dioxobenzo[c]oxathiol-3-one 2-Sulfobenzoic acid cycloanhydride 2-Oxa-1-thia(VI)indan-1,1,3-trione 3H-2,1-Benzoxathiole-3-one 1,1-dioxide 2-SULFOBENZOIC ANHYDRIDE 2-SULPHOBENZOIC ANHYDRIDE 2-SULFOBENZOIC ACID ANHYDRIDE 2-SULFOBENZOIC ACID CYCLIC ANHYDRIDE 2,1-BENZOXATHIOL-3-ONE-1,1-DIOXIDE 1,3-DIHYDRO-2,1LAMBDA6-BENZOXATHIOLE-1,1,3-TRIONE 3-Oxo-3H-2,1-benzoxathiole 1,1-dioxide 3H-Benzo[c][1,2]oxathiol-3-one 1,1-dioxide 2-Sulfobenzoic Acid Anhydrade 2-Sulfobenzoic acid cyclic anhydride,99% 2-Sulfobenzoic acid cyclic anhydride,95% 2-Sulfobenzoic anhyd SULFOBENZOIC ANHYDRIDE O-SULFOBENZOIC ACID CYCLIC ANHYDRIDE O-SULFOBENZOIC ANHYDRIDE O-SULFOBENZOIC CYCLIC ANHYDRIDE O-SULFONIC ACID CYCLIC ANHYDRIDE 3H-2,1-Benzoxathiol-3-one, 1,1-dioxide 3H-2,1-Benzoxathiol-3-one,1,1-dioxide Benzoic acid, 2-sulfo-, cyclic anhydride Benzoic acid, o-sulfo-, cyclic anhydride 2-SulfobenzoicAnhydride> 2-SULFOBENZOIC ANHYDRIDE FOR SYNTHESIS 1,1-dioxo-2,1 2-[oxo-[oxo-(2-sulfophenyl)methoxy]methyl]benzenesulfonic acid High purity 2-Sulfobenzoic anhydride 81-08-3 81-80-3 1981-08-03 1981-8-3 1981-08-3 C7H4O4S Heterocyclic Building Blocks S-Containing Others Building Blocks pharmacetical