- Apple acid
- Pomalus Acid
- Deoxytetraric acid
- Hydroxysuccinic acid
- Hydroxyethane-1,2-dicarboxylic acid
- Butanedioic acid, hydroxy-
White free-flowing, odorless crystals.
Manufacture of various esters and salts, wine manufacture, chelating agent, food acidulant, flavoring.
Registry Numbers and Inventories.
R 37/38 41
S 26 36/37/39
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
131 - 132
Boiling point, °C
Decomposition point, °C
Vapor pressure, mmHg
1.601 g/cm3 (20 C)
Solubility in water
Partition coefficient, pKow
Heat of vaporization
Heat of combustion
Hazards and Protection.
Store in a cool, dry well-ventilated place. Keep container sealed to avoid contamination and spillage.
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.
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.
Dust filter mask
Clean up personnel should wear protective clothing and breathing apparatus if dust environment exists. Avoid discharge to drains, sewers and watercourses.
Strong oxidizing agents.
Decomposition products include fumes of carbon monoxide and carbon dioxide. Maleic acid or maleic anhydride may be formed as decomposition products.
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.
Abnormal neuropsychologic function has been reported following hydrochloric acid exposure from a leaking tanker truck.
Symptoms of exposure may include burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea and vomiting.
May irritate mucous membranes.
Malic acid dust and aqueous solutions may irritate the skin.
Malic acid dust and aqueous solutions may cause lachrymation (flow of tears) and irritation to the eyes.
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.
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.
Remove contaminated clothing, wash exposed area with copious amounts of water. A physician should examine the area if irritation or pain persists.
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.
4. Organic acids
2918 19 80