| Product Identification | Back to Contents | 【Product Name】
DL-2-Hydroxybutanedioic acid | 【Synonyms】
2-Hydroxybutanedioic acid
2-Hydroxyethane-1,2-dicarboxylic acid
Deoxytetraric acid
DL-Hydroxysuccinic acid
Musashi-no-Ringosan
Pomalus acid | 【CAS】
617-48-1 | 【Formula】
C4H6O5 | 【Molecular Weight】
134.09 | 【EINECS】
210-514-9 | 【Beilstein/Gmelin】
1723539 | 【Beilstein Reference】
4-03-00-01123 |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
White, crystalline powder. | 【Solubility in water】
558 g/L | 【Melting Point】
133 | 【Boiling Point】
322 | 【Vapor Pressure】
<0.1 | 【Density】
1.601 g/cm3 (20 C) | 【pKa/pKb】
3.61 (pKa) | 【Partition Coefficient】
-1.29 | 【Usage】
The active ingredient in many sour or tart foods. | 【Vapor Density】
4.6 |
| First Aid Measures | Back to Contents | 【Ingestion】
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately. | 【Inhalation】
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. | 【Skin】
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. | 【Eyes】
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. |
| Handling and Storage | Back to Contents | 【Storage】
Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. | 【Handling】
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. |
| Hazards Identification | Back to Contents | 【Ingestion】
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated. | 【Inhalation】
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated. | 【Skin】
May cause skin irritation. The toxicological properties of this material have not been fully investigated. | 【Eyes】
May cause eye irritation. The toxicological properties of this material have not been fully investigated. |
| 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. |
| Fire Fighting Measures | Back to Contents | 【Flash Point】
245 | 【Fire Fighting】
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam. | 【Upper exp. limit】
16.8 | 【Lower exp. limit】
2.8 | 【Fire Potential】
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. In case of fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. |
| Accidental Release Measures | Back to Contents | 【Small spills/leaks】
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Provide ventilation. |
| Stability and Reactivity | Back to Contents | 【Incompatibilities】
Oxidizing agents, reducing agents, bases, alkali metals. | 【Stability】
Stable under normal temperatures and pressures. | 【Decomposition】
Carbon monoxide, carbon dioxide. |
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