2-(Benzothioylthio)acetic acid
Synonym(s):(Thiobenzoylthio)acetic acid;Dithiobenzoic acid carboxymethyl ester;Thiobenzoylmercaptoacetic acid
- CAS NO.：942-91-6
- Empirical Formula: C9H8O2S2
- Molecular Weight: 212.29
- MDL number: MFCD00004927
- EINECS: 213-393-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:25:59
What is 2-(Benzothioylthio)acetic acid?
Chemical properties
DARK RED CRYSTALLINE POWDER
The Uses of 2-(Benzothioylthio)acetic acid
S-(Thiobenzoyl)thioglycolic acid ((thiobenzoylthio)acetic acid) was employed as reversible addition-fragmentation chain transfer (RAFT) agent during the copolymerization of styrene and divinylbenzene. It was also employed as chain-transfer agent for the RAFT polymerizations of styrene, methyl methacrylate and butyl acrylate.
It may be used to synthesize the following:
- N-Thiobenzoyl-DL-threonine ethyl ester by reacting with DL-threonine.
- Thiobenzoic acid O-esters by reacting with alkoxides.
- N-Thiobenzoylamino acids by reacting with amino acids.
General Description
S-(Thiobenzoyl)thioglycolic acid (TBTGA) also known as (thiobenzoylthio)acetic acid is a reagent used for thiobenzoylation. It participates in the transformation of threonine into β-methylcysteine.
Properties of 2-(Benzothioylthio)acetic acid
| Melting point: | 125-127 °C(lit.) |
| Boiling point: | 375.5±44.0 °C(Predicted) |
| Density | 1.379±0.06 g/cm3(Predicted) |
| storage temp. | Store below +30°C. |
| solubility | acetone: soluble25mg/mL, clear |
| form | powder to crystal |
| pka | 2.91±0.10(Predicted) |
| color | Orange to Brown to Dark red |
| CAS DataBase Reference | 942-91-6(CAS DataBase Reference) |
Safety information for 2-(Benzothioylthio)acetic acid
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. 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. Continuerinsing. P332+P313:IF SKIN irritation occurs: Get medical advice/attention. P337+P313:IF eye irritation persists: Get medical advice/attention. |
Computed Descriptors for 2-(Benzothioylthio)acetic acid
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