Product Brief Introduction
Product name: Hydroxyethyl Starch
CAS: 9005-27-0
MF: C22H44O17
MW: 580.575
Product Specification
|
Item |
Specification |
|
Appearance |
White or off-white powder |
|
Identification |
IR: The infrared absorption spectrum of the sample complies with the reference standard. |
|
The solution should be dark brown or reddish brown |
|
|
Clarity and Color of Solution |
The solution should not be more concentrated than the turbidity standard No.1. |
|
The absorbance at 400nm wavelength≤ 0.015 |
|
|
PH |
5.0-6.5 |
|
Loss on Drying |
≤ 5.0% |
|
Residue on Ignition |
≤ 0.5% |
|
Limiting Viscosity |
13.0-17.0 |
|
Molar Degree of Substitution |
0.38-0.43 |
|
C2/C6 |
8.0-9.6 |
|
Molecular Weight& Molecular Weight Distribution |
Weight average molecular weight:112000-149000 |
|
10% small molecules≥ 16000 |
|
|
10% large molecules≤ 380000 |
|
|
Heavy Metals |
≤ 5ppm |
|
Sodium Chloride |
≤ 0.1% |
|
2-Chloroethanol |
≤ 0.0005% |
|
Ethylene Glycol |
≤ 0.0038% |
|
Epoxyethane |
≤ 0.0001% |
|
Bacterial Endotoxins |
< 1.5 EU/mg |
|
Total Aerobic Microbial Count |
≤ 100cfu/g |
|
Yeasts&Molds |
≤ 50cfu/g |
|
E.Coli |
Negative |
|
Abnormal Toxicity |
The mice did not die within 48 hours. |
|
Assay(on dried basis) |
98.0%-101.0% |
