| Product Identification | Back to Contents | 【Product Name】
DL-Hydroxybutanedioic acid | 【Synonyms】
Apple acid
Butanedioic acid, hydroxy-
Deoxytetraric acid
Hydroxyethane-1,2-dicarboxylic acid
Hydroxysuccinic acid
Pomalus Acid | 【CAS】
6915-15-7 | 【Formula】
C4H6O5 | 【Molecular Weight】
134.09 | 【EINECS】
230-022-8 | 【RTECS】
ON7175000 | 【RTECS Class】
Primary Irritant | 【Merck】
13,5730 | 【Beilstein/Gmelin】
1723539 | 【Beilstein Reference】
4-03-00-01123 | 【EC Class】
irritant |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
White free-flowing, odorless crystals. | 【Solubility in water】
580 g/L | 【Melting Point】
131 - 132 | 【Boiling Point】
306 | 【Vapor Pressure】
.00007 | 【Density】
1.601 g/cm3 (20 C) | 【pKa/pKb】
3.61 (pKa) | 【Partition Coefficient】
-1.26 | 【Heat Of Vaporization】
63.4 kJ/mol | 【Heat Of Combustion】
-1338 kJ/mol | 【Usage】
Manufacture of various esters and salts, wine manufacture, chelating agent, food acidulant, flavoring. |
| First Aid Measures | Back to Contents | 【Ingestion】
Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended. | 【Inhalation】
If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention. | 【Skin】
Remove contaminated clothing, wash exposed area with copious amounts of water. A physician should examine the area if irritation or pain persists. | 【Eyes】
If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention. |
| Handling and Storage | Back to Contents | 【Storage】
Store in a cool, dry well-ventilated place. Keep container sealed to avoid contamination and spillage. | 【Handling】
Wear dust filter mask when handling. Uuse PVC or plastic gloves, safety goggles or face shield. Wear other impervious protective clothing to minimise exposure. Avoid contact with eyes, skin and clothing. Wash hands and face thoroughly after handling and before work breaks, eating, drinking, smoking and using toilet facilities. |
| Hazards Identification | Back to Contents | 【Inhalation】
May irritate mucous membranes. | 【Skin】
Malic acid dust and aqueous solutions may irritate the skin. | 【Eyes】
Malic acid dust and aqueous solutions may cause lachrymation (flow of tears) and irritation to the eyes. | 【Ingestion】
Symptoms of exposure may include burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea and vomiting. | 【EC Risk Phrase】
R 37/38 41 | 【EC Safety Phrase】
S 26 36/37/39 |
| Exposure Controls/Personal Protection | Back to Contents | 【Personal Protection】
Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots. | 【Respirators】
Dust filter mask | 【Exposure Effects】
Abnormal neuropsychologic function has been reported following hydrochloric acid exposure from a leaking tanker truck. | 【Poison Class】
4 |
| Fire Fighting Measures | Back to Contents | 【Flash Point】
153 | 【Autoignition】
349 | 【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. Use agent most appropriate to extinguish fire. |
| Accidental Release Measures | Back to Contents | 【Small spills/leaks】
Clean up personnel should wear protective clothing and breathing apparatus if dust environment exists. Avoid discharge to drains, sewers and watercourses. |
| Stability and Reactivity | Back to Contents | 【Stability】
Stable. | 【Incompatibilities】
Strong oxidizing agents. | 【Decomposition】
Decomposition products include fumes of carbon monoxide and carbon dioxide. Maleic acid or maleic anhydride may be formed as decomposition products. | 【Combustion Products】
-320.1 kcal/mole |
|
| Company Name: |
J & K SCIENTIFIC LTD. |
| Tel: |
010-82848833 400-666-7788 |
| Fax: |
86-10-82849933 |
| WebSite: |
http://www.jkchemical.com |
|