Green lactic acid L(+ ) is produced by fermentation of corn starch .It is a clear syrupy and hydroscopic liquid . Green Lactic acid complies with the specification of FCCIV in USA and E270 in Europe . Green lactic acid is widely used food ,drink ,pharmacy ,cigarette and liquor ,plate coating and chemical etc .
质量标准SPECIFICATION :
Item
食品级food grade
医药级pharm grade
Product name 品名
Lactic acid (L+)乳酸
Molecular formula 分子式
CH3CHOHCOOH
Molecular weight (g/mol)分子量
90.08
90.08
Assay % 含量
80% 88% 90%
88-90%
Stereochemical purity %L+光学纯度
95%-105%
>97%
Density @20”C 密度
1.18-1.20
1.195
Colour (fresh solution)色 度 hazen
150-50 max
<50
Odour 气味
Slight acid
Light acid
Taste 口味
Mild acid
Mild acid
Heavy metals (as Pb) 重金属 ppm
10 max
10 max
Iron 铁 ppm
10 max
10 max
Calcium 钙 ppm
10 max
10 max
Chloride氯化物 ppm
10 max
10 max
Sulphate 硫酸盐 ppm
10 max
10 max
Sulphated ash 硫酸灰份 %
0.1-0.05%
0.05%
Cyanide 氰化物 ppm
5 max
5 max
Lead 铅 ppm
5 max
5 max
Reducing substances (sugars)残糖
Passes FCC/USP
Passes USP
Citric ,oxalic tartaric ,phosphoric acids杂酸
Passes USP test
Passes USP test
Methanol and methyl esters 甲酯
Not detectable
Not detectable
Readily carbonizable substances 易炭化物
Passes USP test
Passes USP test
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