| Product Identification | Back to Contents | 【Product Name】
2-Amino-3-[(2-amino-2-carboxyethyl)dithio]propanoic acid | 【Synonyms】
(2R)-2-Amino-3-[(2R)-2-amino-3-hydroxy-3-oxopropyl]disulfanylpropanoic acid
L-(-)-3,3'-Dithiobis (2-aminopropionic acid) | 【CAS】
56-89-3 | 【Formula】
C6H12N2O4S2 | 【Molecular Weight】
240.3 | 【EINECS】
200-296-3 | 【RTECS】
HA2690000 | 【RTECS Class】
Drug | 【Merck】
13,2811 | 【Beilstein/Gmelin】
1728094 | 【Beilstein Reference】
4-04-00-03155 |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
White powder. A covalently linked dimeric nonessential amino acid formed by the oxidation of CYSTEINE. Two molecules of cysteine are joined together by a disulfide bridge to form cystine. | 【Solubility in water】
110 mg/L | 【Melting Point】
261 - 262 | 【Boiling Point】
428 | 【Density】
1.677 g/cm3 | 【pKa/pKb】
1.0, 2.1, 8.02, 8.71(at 25℃) (pKa) | 【Partition Coefficient】
-1.38 |
| First Aid Measures | Back to Contents | 【Ingestion】
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid. | 【Inhalation】
Remove from exposure to fresh air immediately. Get medical aid if cough or other symptoms appear. | 【Skin】
Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. | 【Eyes】
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. If irritation develops, get medical aid. |
| Handling and Storage | Back to Contents | 【Storage】
Store in a cool, dry, well-ventilated area away from incompatible substances. | 【Handling】
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid contact with skin and eyes. Avoid ingestion and inhalation. |
| Hazards Identification | Back to Contents | 【Ingestion】
Low hazard for usual industrial handling. | 【Inhalation】
Low hazard for usual industrial handling. | 【Skin】
Low hazard for usual industrial handling. | 【Eyes】
Contact may cause transient eye irritation. |
| Exposure Controls/Personal Protection | Back to Contents | 【Personal Protection】
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure. | 【Respirators】
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary. | 【Poison Class】
4 |
| Fire Fighting Measures | Back to Contents | 【Fire Fighting】
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. Extinguishing media: Use water spray, dry chemical, or carbon dioxide. |
| Stability and Reactivity | Back to Contents | 【Disposal Code】
31 | 【Stability】
Stable under normal temperatures and pressures. | 【Incompatibilities】
Strong oxidizers. | 【Decomposition】
Nitrogen oxides, carbon monoxide, oxides of sulfur, carbon dioxide. |
|
|