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High purity Lactic Acid 90%
Basic information:
Chemical name: L (S) -2-hydroxypropionic acid
Molecular formula: CH3CHOHCOOH
Molecular weight: 90.08
Product description
The high-purity lactic acid produced (lactic acid content according to customer, is made from corn starch or cornstraw as raw materials and produced using fermentation and refining technology. This product is a colorless, clear, viscous liquid with a slightly acidic taste and hygroscopicity. Its aqueous solution exhibits an acidic reaction and can mix freely with water, ethanol, or ether. It is insoluble in chloroform.
Technical indicators (reference standards: GB)
Identification test The aqueous solution is acidic, and lactate reacts positively
lactic acid content: 95.0-105.0 of w/% indicated value
L-lactic acid accounts for the total lactate content w/% ≥99.0
Ignition residue w/% ≤0.01
Chloride (calculated as C1) w/% ≤0.001
Sulfate (calculated as SO4) w/% ≤0.001
Iron salt (calculated as Fe) w/% ≤0.0001
cyanide mg/kg ≤1.0
Citric acid, oxalic acid, phosphoric acid, tartaric acid
Oxalic acid, phosphoric acid, tartaric acid through experiments
reducing sugar By experiment
Charcoal compounds By experiment
Lead (Pb) mg/kg ≤0.5
Arsenic (As) mg/kg ≤1.0
chroma APHA ≤10
Heating chromaticity (180 ℃ 2hs) APHA ≤10
Mercury (Hg) mg/kg ≤1
Volatile fatty acids By experiment
methanol w/% ≤0.05
Heavy metals (calculated as Pb) mg/kg ≤5
Ether insoluble substance By experiment
Calcium salt mg/kg ≤1
Density (20 ℃), g/ml 1.200-1.220
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