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Thioacetic acid

Chemical properties Uses Production methods Hazards & Safety Information
Thioacetic acid
Thioacetic acid
Chemical Name:
Thioacetic acid
TAA;CH3COSH;ATA(TM);thioacetic;usafek-p-737;Usaf EK-P-737;Thioessigsure;thio-aceticaci;THIACETIC ACID;acetylmercaptan
Molecular Formula:
Formula Weight:
MOL File:

Thioacetic acid Properties

Melting point:
-17 °C
Boiling point:
97 °C
1.065 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.465(lit.)
Flash point:
52 °F
storage temp. 
27g/l (slow decomposition)
3.33(at 25℃)
Clear colorless to pale yellow
1.8 (100g/l, H2O, 20℃)Hydrolysis
Water Solubility 
27 g/L (15 ºC) (hydrolyse)
Stable. Flammable. Incompatible with metals, strong oxidizing agents.
CAS DataBase Reference
507-09-5(CAS DataBase Reference)
NIST Chemistry Reference
Ethanethioic acid(507-09-5)
EPA Substance Registry System
Ethanethioic acid(507-09-5)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  F,C,Xn
Risk Statements  11-34-22-43-41
Safety Statements  9-16-26-36/37/39-45-28-23
RIDADR  UN 2436 3/PG 2
WGK Germany  3
RTECS  AJ5600000
HazardClass  3
PackingGroup  II
HS Code  29309070
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P333+P313 IF SKIN irritation or rash occurs: Get medical advice/attention.
P370+P378 In case of fire: Use … for extinction.
P405 Store locked up.
P403+P235 Store in a well-ventilated place. Keep cool.

Thioacetic acid price More Price(20)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 8.08076 Thioacetic acid 507-09-5 1EA $51 2017-11-08 Buy
Sigma-Aldrich 8.08076 Thioacetic acid 507-09-5 2EA $112 2017-11-08 Buy
TCI Chemical T0189 Thioacetic Acid >95.0%(GC) 507-09-5 25mL $21 2017-12-01 Buy
TCI Chemical T0189 Thioacetic Acid >95.0%(GC) 507-09-5 100mL $52 2017-12-01 Buy
Alfa Aesar L03305 Thioacetic acid 97% 507-09-5 25g $23.6 2018-11-20 Buy

Thioacetic acid Chemical Properties,Uses,Production

Chemical properties

Thioacetic acid is acid containing thiol group, it is also known as thioacetate, thiol acetic acid, acetic acid. It is yellow fuming liquid with unpleasant and pungent odor, chemical property is active, reactivity is very strong, it can prapare mercaptan by reaction with unsaturated aliphatic hydrocarbon and alcohol.
Reaction with ethylene oxide can prepare acetylthio ethanol.
Four methods of laboratory prepared thioacetic acid:
1, acetic acid and phosphorus pentasulfide at 91℃ react, vacuum distillation is further refined and product can obtain.
2, chloride and hydrogen sulfide react, after dilute lye neutralizes and distillation refines. It can be obtained.
3, the reaction of acetic anhydride with hydrogen sulfide, thioacetic acid can be obtained, while byproduct of acetic acid can get.
4, the reaction of ketene with hydrogen sulfide can directly obtain.
Uses: In laboratory, it can instead of hydrogen sulfide, it can be used verification of cobalt and lead, determination of molybdenum, sulfur synthetic aldehydes and ketones sulfur, histochemical determination of esterase, it can be used as tear gas and so on.


1. This product can be used as organic synthesis acetylthio agent and mercapto agent, it is mainly used for lipoic acid, cystine and synthetic mercapto carboxylic acids, it can also be used for hormone antidote, cephalosporins sex and fungicides, modifiers and additives for synthetic polymers. For reagents, flavors and fragrances, cosmetics, synthetic captopril.
2. It can be used as pharmaceuticals, flavors and fragrances intermediates.
3. It can be used as chemical reagent, precipitation agent and catalyst.

Production methods

It can be obtained by thermal distillation of ice aldehyde acid with five-thiodipropionic phosphorus. Finely powdered phosphorus pentasulfide is added into glacial acetic acid. When heated to 91℃, it start distilles thioacetic acid, it need to prevent bumping during heating, distillation temperature must not exceed 100 ℃. Distillate distilles once again can derive product.

Hazards & Safety Information

Category: corrosive materials
Toxicity grading: highly toxic Acute intraperitoneal toxicity-mouse LD50: 75 mg/kg
Flammability Combustible hazardous characteristics: it is combustible, easy to decompose into acetic acid and toxic hydrogen sulfide gas
Storage characteristics: Treasury ventilation low-temperature drying; and it should be stored separately with oxidants, alkali.
Extinguishant: sand, foam, water spray, carbon dioxide.

Chemical Properties

colourless fuming liquid with an unpleasant odour


Chemical reagent, lachrymator.


ChEBI: A thioacetic acid that is acetic acid in which the oxygen atom of the hydroxy group has been replaced by a sulfur atom.

General Description

A clear,yellow liquid with a strong, unpleasant odor. May be toxic by ingestion, inhalation and skin absorption. Irritating to skin and eyes. Flash point near 50°F. Used to make other chemicals.

Air & Water Reactions

Highly flammable. Water soluble.

Reactivity Profile

Thioacetic acid is a thio organic acid. Organosulfides are incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. Many of these compounds may liberate hydrogen sulfide upon decomposition or reaction with an acid.


Toxic by ingestion and inhalation.

Health Hazard

May cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.

Fire Hazard

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

Thioacetic acid Preparation Products And Raw materials

Raw materials

Preparation Products

Thioacetic acid Suppliers

Global( 175)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Capot Chemical Co.,Ltd.
+86 (0)571-855 867 18
+86 (0)571-858 647 95 China 19954 60
Shenzhen Sendi Biotechnology Co.Ltd.
0755-23311925 18102838259
0755-23311925 CHINA 3218 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32764 55
career henan chemical co
+86-371-86658258 CHINA 10011 58
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40399 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30308 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 / 800-988-0390
021-67121385 China 24654 81
Beijing dtftchem Technology Co., Ltd. 13651141086; 86(10)60275028、60275820
86 (10) 60270825 China 3433 62
BeiJing Hwrk Chemicals Limted 4006990298;010-57411839;0757-86311057;021-51691807
010-87653215;0757-86311057;021-55236763 China 14687 55

View Lastest Price from Thioacetic acid manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-08-20 Thioacetic acid
US $1.00 / KG 1KG 99% Customized

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