L-Tartaric acid
Identification:
Chemical Name: L(+)-Tartaric acid
Synonyms: L-2,3-dihydroxy butanedioic acid; L(+)-Weins?ure
CAS No.: 87-69-4
Molecular Formula: C4H6O6
E-Code: E334
Properties:
Colorless or translucent crystals, or a white, fine granular, crystalline powder. It is odorless, has an acid taste, and stable in air.
Specifications:
Assay: 99.7~100.5%
Specific Rotation(20℃): +12.0° ~ +13.0 °
Heavy metal: ≤ 10 mg/kg
Oxalate: Qualified
Residue on Ignition:≤0.05%
Sulfate (SO42-): Qualified
Loss on drying: ≤0.5%
Arsenic(As): ≤2mg/kg
Application:
L(+)-Tartaric acid is widely used as acidulant in beverage, and other foods, such as soft drinks, wine, candy, bread and some colloidal sweetmeats. With its optical activity, L(+)-Tartaric acid is used as chemical resolving agent to resolve DL-amino-butanol, an intermediate for antitubercular drug. And it is used as chiral pool to synthesize tartrate derivatives. With its acidity, it is used as catalyst in the resin finishing of polyester fabric or pH value regulator in oryzanol production. With its complexation, L(+)-Tartaric acid is used in electroplating, sulfur removal and acid pickling. It is also used as complexing agent, screening agent or chelating agent in chemical analysis and pharmaceutical inspection, or as resist agent in dyeing. With its reduction, it is used as reductive agent in manufacturing mirror chemically or imaging agent in photography. It can also complex with metal ion and can be used as cleaning agent or polishing agent of metal surface.
Packing& Storage:
25KG net in Kraft/Plastic Bag lined with PE bag.
Kept airtightly in a light-proof, dry and cool place.
公司简介
Henan Sinotech Import & Export corporation is located in the core city of Central Plains Economic Zone (CPEZ)-Zhengzhou, our office is next to Zhengzhou Customs District. We obtained independent import export right approved by Henan Provincial Commerce Department on May,2014.
