Heat Stable Grade Lactic Acid 50-21-5

Physical Property This product is colorless transparent viscidity liquid, a little acid, guide wetly, the aqueous solution shows the acid reaction. Can be mixed, not dissolved with water, ethanol or ether wantonly in the chloroform.   Quality Index 

Item	Unit	Standard value
Molecular weight	G/mol	90.8
Assay	%wt	≥88%
Stereochemical purity	%L(+)	≥97%
Density(@20°C)	G/ml	1.195-1.205
Chroma ( fresh solution)	APHA	≤15
Chroma (200°C, heat for 2 hours)	APHA	≤50
Odor	-	slight sourness
Taste	-	mild sourness
Heavy metals (as Pb)	ppm	≤10
Fe	ppm	≤10
Ca	ppm	≤10
Chloride	ppm	≤10
Sulfate	ppm	≤10
Sulphuric acid ash	%	≤0.05
Cyanide	ppm	≤5
Pb	ppm	≤5
Reducing substances (sugar)	-	pass FCC inspection
Citric acid/ oxalic acid /tartaric acid /phosphoric acid	-	pass USP inspection
Methanol/methyl ester	-	not detectable
Volatile fatty acid	-	pass EP inspection
Readily carbonizable substance	-	pass USP inspection
Ether insoluble substance	-	pass EP inspection

  Application This product is natural occurrence, high purity, good in hot stability; it is natural acid, PH regulator and pharmaceutical antiseptic. The content of heavy metal of this product is extremely low; electroplate fine twine mixture, buffer of the trade. There is extensive application in food, medicine, cosmetics trade and other industry.   Packing 25/250 KG polyethylene plastic barrel or 1200kg IBC