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Thiobenzoic acid

CAS No.
98-91-9
Chemical Name:
Thiobenzoic acid
Synonyms
Benzothioic S-acid;Thiobenzoate;benzothioic O-acid;thiobenzate;benzoylthiol;Benzoyl thiol;thio-benzoicaci;THIOBENZOIC ACID;Thiolbenzoic acid;thiobenzoic S-acid
CBNumber:
CB3735891
Molecular Formula:
C7H6OS
Molecular Weight:
138.19
MDL Number:
MFCD00004852
MOL File:
98-91-9.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-09-12 08:02:30

Thiobenzoic acid Properties

Melting point 15-18 °C (lit.)
Boiling point 122 °C/30 mmHg (lit.)
Density 1.174 g/mL at 25 °C (lit.)
refractive index n20/D 1.605(lit.)
Flash point >230 °F
storage temp. 2-8°C
solubility soluble in Chloroform, Ethyl Acetate
pka 3.61±0.10(Predicted)
form Liquid
Specific Gravity 1.174
color Clear yellow to brown
Water Solubility insoluble
Sensitive Air Sensitive
BRN 1071790
InChI 1S/C7H6OS/c8-7(9)6-4-2-1-3-5-6/h1-5H,(H,8,9)
InChIKey UIJGNTRUPZPVNG-UHFFFAOYSA-N
SMILES SC(=O)c1ccccc1
LogP 1.645 (est)
CAS DataBase Reference 98-91-9(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII GBG5RLO56N
NIST Chemistry Reference Benzenecarbothioic acid(98-91-9)
EPA Substance Registry System Benzenecarbothioic acid (98-91-9)
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P264-P271-P280-P302+P352-P305+P351+P338
target organs Respiratory system
PPE Eyeshields, Gloves, type ABEK (EN14387) respirator filter
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-28-36-24/25
RIDADR  UN 2810 6.1/PG 3
WGK Germany  3
RTECS  DH6839000
9-13-23
TSCA  TSCA listed
HS Code  29309070
Storage Class 10 - Combustible liquids
Hazard Classifications Eye Irrit. 2
Skin Irrit. 2
STOT SE 3
REACH Registrations Active
NFPA 704
0
2 0

Thiobenzoic acid price More Price(22)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich T28207 Thiobenzoic acid technical grade, 90% 98-91-9 100g $59.9 2026-04-30 Buy
Sigma-Aldrich T28207 Thiobenzoic acid technical grade, 90% 98-91-9 500g $134 2026-04-30 Buy
TCI Chemical T0195 Thiobenzoic Acid >93.0%(T) 98-91-9 25g $20 2026-04-30 Buy
TCI Chemical T0195 Thiobenzoic Acid >93.0%(T) 98-91-9 500g $75 2026-04-30 Buy
TRC TRC-B189000-50G Thiobenzoic Acid (94%)(Benzenecarbothioic Acid) 98-91-9 50g $84 2026-06-03 Buy
Product number Packaging Price Buy
T28207 100g $59.9 Buy
T28207 500g $134 Buy
T0195 25g $20 Buy
T0195 500g $75 Buy
TRC-B189000-50G 50g $84 Buy

Thiobenzoic acid Chemical Properties, Uses, Production

Chemical Properties

clear yellow to brown liquid

Uses

Organic intermediate.

Synthesis Reference(s)

Journal of the American Chemical Society, 95, p. 3440, 1973 DOI: 10.1021/ja00791a092
Organic Syntheses, Coll. Vol. 4, p. 924, 1963

Synthesis

To a solution of N,N-dimethylthioformamide (1.0 mmol) in THF (1.0 mL) was added a 1.0 M phenyl lithium cyclohexane-Et2O solution (1.0 mL, 1.0 mmol) at -78C. After the addition was complete, the mixture was stirred for 0.5 h at room temperature. A 0.93 M THF solution of phenylmagnesium bromide (1.0 mmol) was added to the mixture at room temperature. This mixture was stirred at reflux for 2 hours. Benzoyl chloride (1.0 mmol) was added to the mixture. The reaction mixture was stirred again for 2 hours at room temperature. The resulting mixture was poured into saturated aqueous NH4Cl solution. The organic and aqueous layers were separated. The aqueous layer was acidified with aqueous HCl solution (1N, 10 mL). Extracted the aqueous layer with Et2O to obtain organic layer II. dried organic layer II on MgSO4. vacuum concentrated organic layer II to obtain thiobenzoic acid.

10364-94-0
98-91-9
Synthesis of Thiobenzoic acid from N-Benzoylimidazole
Global Suppliers ( 208)
Supplier Tel Email Country ProdList Advantage
Liyang Kunlu biological technology co.,ltd 0519-87310015 13813530041 200601296@qq.com China 323 58
Baoding Bink New Materials Co., Ltd. 18531123677 faithe@yan-xi.com China 277 58
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
Alfa Aesar 400-6106006 saleschina@alfa-asia.com China 30103 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
JinYan Chemicals(ShangHai) Co.,Ltd. 13817811078 sales@jingyan-chemical.com China 9963 60
Chemsky(shanghai)International Co.,Ltd. 021-50135380 shchemsky@sina.com China 32273 50
Shandong Xiya Chemical Co., Ltd 13355009207 13355009207 3007715519@qq.com China 18722 57

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View Latest Price from Thiobenzoic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Thiobenzoic acid pictures 2019-07-06 Thiobenzoic acid
98-91-9
$1.00 1KG 99% Career Henan Chemical Co
THIOBENZOIC ACID Acido mercaptobenzoico acidomercaptobenzoico Benzenecarbothioic S-acid benzenecarbothioicacid Benzoic acid, thio- Benzoyl thiol Thiobenzoic acid technical grade, 90% thiobenzate benzoylthiol Monothiobenzoic acid monothiobenzoicacid thio-benzoicaci THIOBENZOIC ACID, TECH., 90% ThiobenzoicAcid,~99% Thiobenzoicacid,94% thiobenzoic S-acid Thiolbenzoic acid Thiobenzoic acid,90% Thiobenzoic acid, 90% 100GR benzothioic O-acid Benzenecarbothioic Acid (94%) Thiobenzoic Acid (94%) (Benzenecarbothioic Acid) Thiobenzoic Acid > Benzothioic S-acid Thiobenzoate 98-91-9 C6H5COSH C7H6OS Building Blocks Organic Building Blocks Thiocarbonyl Compounds Sulfur Compounds Organic Building Blocks Sulfur Compounds Thiocarbonyl Compounds bc0001