thiodiglycollic acid
Thiodiglycolic acid
CAS: 123-93-3
Molecular Formula: C4H6O4S
thiodiglycollic acid - Names and Identifiers
thiodiglycollic acid - Physico-chemical Properties
| Molecular Formula | C4H6O4S |
| Molar Mass | 150.15 |
| Density | 1.352 (estimate) |
| Melting Point | 128-131°C(lit.) |
| Boling Point | 241.69°C (rough estimate) |
| Flash Point | 181.8°C |
| Water Solubility | soluble |
| Solubility | 400g/l |
| Vapor Presure | 1.01E-06mmHg at 25°C |
| Appearance | White to beige powder |
| Color | White to grayish |
| Merck | 14,9331 |
| BRN | 1764392 |
| pKa | pK1:3.32;pK2:4.29 (25°C) |
| PH | 2.2 (10g/l, H2O, 20℃) |
| Storage Condition | Store below +30°C. |
| Sensitive | Stench |
| Refractive Index | 1.5500 (estimate) |
| MDL | MFCD00004359 |
| Use | Antioxidants, and for the production of thioester antioxidants |
thiodiglycollic acid - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 3261 8/PG 2 |
| WGK Germany | 3 |
| RTECS | AJ6475000 |
| FLUKA BRAND F CODES | 13 |
| TSCA | Yes |
| HS Code | 29309070 |
| Hazard Note | Corrosive/Stench |
| Hazard Class | 8 |
| Packing Group | III |
| Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
thiodiglycollic acid - Upstream Downstream Industry
| Raw Materials | Acrylonitrile sodium hydrosulfide Sulfuric acid |
thiodiglycollic acid - Introduction
Soluble in water, soluble in alcohol, insoluble in benzene.
Last Update：2022-10-16 17:12:54
thiodiglycollic acid - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| overview | thiodiacetic acid is a carboxylic acid organic compound, which can be used as an intermediate in pharmaceutical synthesis. |
| preparation | preparation of thiodiacetic acid: add 540g(3.6mol) of DL-methionine, 408g(4.32mol) of chloroacetic acid and 3L of water to a 5L four-mouth flask, stir evenly, slowly heat to 80 ℃, and react for 8 hours; After the reaction is over, the solvent water is recovered by cooling under reduced pressure, A total of 936g of DL-homoserine lactone hydrochloride, methylthioacetic acid and thiodiacetic acid mixture were obtained respectively. |
| Use | Antioxidants, and used to produce thioester antioxidants |
| spontaneous combustion temperature | 350°C |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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Raw Materials for thiodiglycollic acid