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LC5800 2,2′-Thiodiacetic acid
for synthesis


Order number Packaging Quantity Price €
AC32800 Plastic bottle 250 g 19.13
AC32800 Plastic bottle 1 kg 45.00


Product information
Synonyms Thiodiglycollic acid, Bis(carboxymethyl)sulfide
Hill Formula C4H6O4S
Chemical formula S(CH2COOH)2
HS Code 2930 90 99
EC number 204-663-9
Molar mass 150.14 g/mol
CAS number 123-93-3


Chemical and physical data
Ignition temperature 350 °C
Solubility 400 g/l (18 °C)
Melting point 128 – 131 °C
Molar mass 150.14 g/mol
Flash point 2.2 (10 g/l, H2O, 20 °C)


Safety information according to GHS
Hazard Statement(s) H315: Causes skin irritation.
H319: Causes serious eye irritation.
H335: May cause respiratory irritation.
Precautionary Statement(s) P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Signal Word Warning
Hazard Pictogram(s)
Storage class 8 A Combustible substances, corrosive
WGK WGK 2 water endangering
Disposal 3
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.


Safety information
R Phrase R 36/37/38
Irritating to eyes, respiratory system and skin.
Categories of danger irritant
Hazard Symbol Irritant


Transport information
Declaration (transport by sea) IMDG-Code UN 3261 CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.(2,2-THIODIACETIC ACID), 8, III, Segregation Group: 1 (Acids)
Declaration (transport by air) IATA-DGR UN 3261 CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.(2,2-THIODIACETIC ACID), 8, III


Toxicological data
LD 50 oral LD50 rat > 2000 mg/kg


Assay (HPLC, area%) ≥ 99 %
Melting range
– lower value
≥ 128 °C
– upper value ≤ 131 °C
Suitability as reagent (for sorbic acid) passes test


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