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LC5795 Thioacetic acid
for synthesis


Order number Packaging Quantity Price €
AC32795 Glass bottle 100 ml 24.30
AC32795 Glass bottle 250 ml 53.10


Product information
Hill Formula C2H4OS
Chemical formula CH3COSH
HS Code 2930 90 99
EC number 208-063-8
Molar mass 76.12 g/mol
CAS number 507-09-5


Chemical and physical data
Solubility 27 g/l (15 °C) (slow decomposition)
Melting point -17 °C
Melting point 76.12 g/mol
Density 1.07 g/cm3 (20 °C)
pH value 1.8 (100 g/l, H2O, 20 °C) Hydrolysis
Boiling point 88 – 92 °C
Vapor pressure 1 hPa (20 °C)
Flash point 2 °C
Refractive index 1.463 (20 °C, 589 nm)


Safety information according to GHS
Hazard Statement(s) H225: Highly flammable liquid and vapour.
H301: Toxic if swallowed.
H314: Causes severe skin burns and eye damage.
H317: May cause an allergic skin reaction.
H332: Harmful if inhaled.
Precautionary Statement(s) P210: Keep away from heat/sparks/open flames/hot surfaces. – No smoking.
P233: Keep container tightly closed.
P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
P301 + P330 + P331: IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P403 + P235: Store in a well-ventilated place. Keep cool.
Signal Word Danger
Hazard Pictogram(s)

Storage class 3 Flammable Liquids
WGK WGK 3 highly water endangering
Disposal 6
Sulfides and sulfites as well as other reducing substances, inorganic cyanides and isonitriles: Stir into sodium hypochlorite solution (Cat. No. 105614) and, if necessary, leave to react for several days. Caution: some substances may show a violent reaction! Draw off any toxic or flammable gases that may be formed. Excess oxidant should be neutralized with sodium thiosulfate (Cat. No. 106513). Container D or E.


Safety information
R Phrase R 11-20/22-34-43
Highly flammable.Harmful by inhalation and if swallowed.Causes burns.May cause sensitization by skin contact.
S Phrase S 26-36/37/39-45
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Categories of danger highly flammable, harmful, corrosive, sensitizing
Hazard Symbol Flammable


Transport information
Declaration (transport by sea) IMDG-Code UN 2436 THIOACETIC ACID, 3, II
Declaration (transport by air) IATA-DGR UN 2436 THIOACETIC ACID, 3, II


Toxicological data
LD 50 oral LD50 rat > 200 – 400 mg/kg


Assay (GC, area%) ≥ 98 %
Density (d 20 °C/ 4 °C) 1.067 – 1.070
Identity (IR) passes test