Specification	Hydroxyethyl starch 130/0.5
Character	Almost white or light yellow powder,odorless and insipidity with moisture absorption freely soluble in hot water,partically insluble in alcohol,actone and trichloromethane
Identification
Chemistry reaction	should be positive reaction
By IR absorption	Match with working standard
PH	5.0-7.0
Specific optical roation	182°-192°
Limiting viscosity	13.0-17.0
Appearance of solution	Turbidity no dark than 2 #
Heavy metals	≤ 10 ppm
Loss on drying	≤ 6.0
Substitution degree	0.43-0.55
Molecular weight	MW 110,000-150,000
MW 10%	≤ 380,000
MW 90%	≥ 15,000
Bacterial endotoxins	≤ 5.0eu/g
Microbial pollution	Yeast and Mould <10/g
Sodium chloride	≤ 0.6%
Residual solvents
Ethylene glycol	≤ 0.062%
Epoxyethane	≤ 0.001%
Assay	≥ 98.5%
Specification	Hydroxyethyl starch 200/0.5
Character	Almost white or light yellow powder,odorless and insipidity with moisture absorption freely soluble in hot water,partically insluble in alcohol,actone and trichloromethane
Identification
Chemistry reaction	should be positive reaction
By IR absorption	Match with working standard
PH	4.5-6.5
Specific optical roation	182°-192°
Limiting viscosity	15.0-19.0
Appearance of solution	Turbidity no dark than 2 #
Heavy metals	≤ 10 ppm
Loss on drying	≤ 6.0
Substitution degree	0.43-0.55
Molecular weight	MW 190,000-220,000
MW 10%	≤ 780,000
MW 90%	≥ 13,000
Bacterial endotoxins	≤ 5.0eu/g
Microbial pollution
Yeast and Mould	<10/g
Sodium chloride	≤ 0.6%
Residual solvents
Ethylene glycol	≤ 0.062%
Epoxyethane	≤ 0.001%
Assay	≥ 98.5%

CAS No. 9005-27-0

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