L-Malic acid

Structure of L-Malic acid (CAS NO.97-67-6):

IUPAC Name: (2S)-2-hydroxybutanedioic acid 
Empirical Formula: C₄H₆O₅
Molecular Weight: 134.0874 
EINECS: 202-601-5 
Index of Refraction: 1.529
Molar Refractivity: 25.2 cm³
Molar Volume: 81.6 cm³
Polarizability: 9.99×10^-24cm³
Surface Tension: 86.2 dyne/cm
Density: 1.641 g/cm³
Flash Point: 153.4 °C
Enthalpy of Vaporization: 63.43 kJ/mol 
Melting Point: 101-103 °C(lit.)
Boiling Point: 306.4 °C at 760 mmHg
Vapour Pressure: 7.19E-05 mmHg at 25°C 
Solubility: H2O: 0.5 M at 20 °C, clear, colorless
Water Solubility: soluble 
Physical Appearance: clear colourless solution
Product Categories: Food & Feed ADDITIVES;MalicAcidSeries;Carboxylic Acids (Chiral);Chiral Building Blocks;for Resolution of Bases;Optical Resolution;Synthetic Organic Chemistry;Chiral chemicals 
Product Name: L(-)-Malic acid
Synonyms of L-Malic acid (CAS NO.97-67-6): (-)-Hydroxysuccinic acid ; (-)-Malic acid ; (2S)-2-Hydroxybutanedioic acid ; 2-Hydroxybutanedioic acid, (S)- ; Apple acid ; Butanedioic acid, hydroxy-, (S)- ; Hydroxybutanedioic acid, (S)- ; L-(-)-Malic acid ; Malic acid, L- ; S-(-)-Malic acid ; S-2-Hydroxybutanedioic acid .

 Malic acid was first isolated from apple juice by Carl Wilhelm Scheele in 1785. Antoine Lavoisier in 1787 proposed the name acide malique which is derived from the Latin word for apple, mālum.

 L-Malic acid (CAS NO.97-67-6) is an active ingredient in many sour or tart foods.

Hazard Codes: Xi
Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36-37/39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing. 
S37/39:Wear suitable gloves and eye/face protection.
WGK Germany: 3
RTECS: ON7175000
HS Code: 29181980

Storage
It should be stored in a tightly closed container and keep container closed when not in use. It should be stored in a cool and dry area away from incompatible substances.
Handling
Wash thoroughly after handling.Avoid contact with eyes, skin, and clothing. Remove contaminated clothing and wash before reuse. Wash clothing before reuse. Avoid ingestion and inhalation. Use with adequate ventilation.
Personal Protection
Wear appropriate protective chemical safety goggles or eyeglasses. Wear appropriate protective gloves to prevent skin exposure.Wear suitable protective clothing to prevent skin exposure.
Small spills/leaks
Clean up spills right away, using the suitable protective equipment. Sweep up, then place into a container for disposal. Avoid generating dusty conditions. Provide ventilation.