Benzo(d)thiazole-2-sulfonic acid

About Benzo(d)thiazole-2-sulfonic acid

Benzo(d)thiazole-2-sulfonic acid is a sulfur heterocycle carrying the CAS registry number 941-57-1. With the molecular formula C7H5NO3S2, it has a molar mass of 215.3 g/mol. Systematically, it is named 1,3-benzothiazole-2-sulfonic acid. Alternative names: Benzothiazole-2-sulfonic acid and 2-Benzothiazolesulfonic acid.

Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Typical applications include organic synthesis and API synthesis. It is used across pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 100 mg, 250 mg, 1 g and 5 g, and every batch ships with a Certificate of Analysis (COA) and we export worldwide. SDS and detailed specification sheets can be requested with your quotation. Custom pack sizes, bulk quantities and specific analytical data can be arranged on request.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Benzo(d)thiazole-2-sulfonic acid
Catalogue No.	VQ-052380
CAS Number	941-57-1
IUPAC name	1,3-benzothiazole-2-sulfonic acid
Molecular formula	C₇H₅NO₃S₂
Molecular weight	215.3 g/mol
Exact mass	214.9711
HSN code	2933
InChIKey	ZCXGMSGCBDSEOY-UHFFFAOYSA-N
SMILES	C1=CC=C2C(=C1)N=C(S2)S(=O)(=O)O
PubChem CID	30647

Physical properties
Physical form	Other
LogP (XLogP3)	1.5
H-bond donors / acceptors	1 / 5
TPSA	104 Å²
Synonyms	Benzothiazole-2-sulfonic acid, 2-Benzothiazolesulfonic acid, 2-Benzothiazolesulfonicacid(6Ci,7Ci,8Ci,9Ci), 2-Benzothiazolsulfonic acid, benzthiazoline sulfonic acid, 1,3-benzothiazole-2-sulonic acid

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Environmental hazard

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H317May cause an allergic skin reaction
H318Causes serious eye damage
H335May cause respiratory irritation
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary statements: P261, P264, P264 + P265, P270, P271, P272, P273, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P354 + P338, P317, P319, P321, P330, P332 + P317, P333 + P317, P362 + P364, P391, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Benzo(d)thiazole-2-sulfonic acid?

The CAS Registry Number of Benzo(d)thiazole-2-sulfonic acid is 941-57-1. It is also known as Benzothiazole-2-sulfonic acid, 2-Benzothiazolesulfonic acid, 2-Benzothiazolesulfonicacid(6Ci,7Ci,8Ci,9Ci).

What is the molecular formula and molecular weight of Benzo(d)thiazole-2-sulfonic acid?

Benzo(d)thiazole-2-sulfonic acid has the molecular formula C7H5NO3S2 and a molecular weight of 215.3 g/mol. Its IUPAC name is 1,3-benzothiazole-2-sulfonic acid.

Which grade and pack sizes of Benzo(d)thiazole-2-sulfonic acid can I order?

We supply Benzo(d)thiazole-2-sulfonic acid, in 100 mg, 250 mg, 1 g, 5 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Benzo(d)thiazole-2-sulfonic acid?

Yes. Every lot of Benzo(d)thiazole-2-sulfonic acid is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Benzo(d)thiazole-2-sulfonic acid be shipped internationally?

Yes. Benzo(d)thiazole-2-sulfonic acid is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.