| Product Identification | Back to Contents | 【Product Name】
L(-)-Malic acid | 【Synonyms】
(-)-Hydroxysuccinic acid
(2S)-2-Hydroxybutanedioic acid
(S)-Malic acid
Apple acid
S-2-Hydroxybutanedioic acid | 【CAS】
97-67-6 | 【Formula】
C4H6O5 | 【Molecular Weight】
134.09 | 【EINECS】
202-601-5 | 【RTECS】
ON7175000 | 【Merck】
13,5730 | 【Beilstein/Gmelin】
1723541 | 【Beilstein Reference】
4-03-00-01123 | 【EC Class】
irritant |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
Clear, colorless liquid. | 【Solubility in water】
Very soluble | 【Melting Point】
101 - 104 | 【Boiling Point】
322 | 【Density】
1.595 g/cm3 (20 C) | 【pKa/pKb】
3.61 (pKa) | 【Partition Coefficient】
-1.29 | 【Usage】
Active ingredient in many sour or tart foods. | 【Vapor Density】
4.6 |
| First Aid Measures | Back to Contents | 【Ingestion】
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. | 【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. |
| Handling and Storage | Back to Contents | 【Storage】
Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. | 【Handling】
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation. Wash clothing before reuse. |
| Hazards Identification | Back to Contents | 【Ingestion】
Causes gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated. | 【Inhalation】
Causes respiratory tract irritation. The toxicological properties of this substance have not been fully investigated. | 【Skin】
Causes skin irritation. The toxicological properties of this material have not been fully investigated. | 【Eyes】
Causes eye irritation. | 【EC Risk Phrase】
R 37/38 41 | 【EC Safety Phrase】
S 26 36 |
| 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 (Substances and products that must be considered harmful) |
| Fire Fighting Measures | Back to Contents | 【Flash Point】
220 | 【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. |
| Accidental Release Measures | Back to Contents | 【Small spills/leaks】
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation. |
| Stability and Reactivity | Back to Contents | 【Incompatibilities】
Oxidizing agents. | 【Stability】
Stable at room temperature in closed containers under normal storage and handling conditions. | 【Decomposition】
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide. |
|
| Company Name: |
J & K SCIENTIFIC LTD. |
| Tel: |
010-82848833 400-666-7788 |
| Fax: |
86-10-82849933 |
| WebSite: |
http://www.jkchemical.com |
|