Name:Hydroxypropyl starch
Synomys:Starchhydroxypropylated
CAS:9005-27-0
M.F.: C22H44O17
Appearance:Colorless or white powder,good mobility,good solubility in water, its aqueous solution is colorless with good stability.
Uses:Used for textile sizing, paper sizing within the table, coating, food additives, pharmaceutical producers, or granules, feed, bonding and so on.
130/0.4
|
Tests
|
Results
|
Specifications
|
|
Character
|
Complies
|
Should be complies
|
|
Identification
|
Complies
|
Chemistry reaction, should be positive reaction
|
|
|
Complies
|
By IR absorption, to match with the working standard
|
|
pH
|
5.9
|
4.5-7.0
|
|
Clarity
|
Complies
|
Should be complies
|
|
Absorbance
|
Complies
|
Max.0.025 at 400nm
|
|
Specific optical rotation
|
191°
|
182°-192°
|
|
Loss on drying
|
4.0%
|
≤15.0%
|
|
chloride
|
0.1%
|
≤0.1%
|
|
Heavy metals
|
≤10ppm
|
≤10ppm
|
|
Apparent viscosity
|
15.0
|
13.0～17.0
|
|
Substitution degree
|
0.39
|
0.368～0.432
|
|
Glycol
|
Complies
|
Not more than 0.004%
|
|
Epoxy ethane
|
Complies
|
Not more than 0.0001%
|
|
2-chloroethanol
|
Complies
|
Not more than 0.0005%
|
|
bacterial endotoxin
|
Complies
|
≤2.5IU/g
|
|
Assay
|
100.7%
|
 98.5%-101.0%
|
200/0.5
|
Tests
|
Results
|
Specifications
|
|
Character
|
Complies
|
Should be complies
|
|
Identification
|
Complies
|
Chemistry reaction, should be positive reaction
|
|
|
Complies
|
By IR absorption, to match with the working standard
|
|
pH
|
5.9
|
4.5-7.0
|
|
Absorbance
|
0.01
|
Max.0.025 at 400nm
|
|
Specific optical rotation
|
+187°
|
182°-192°
|
|
Loss on drying
|
2.0%
|
≤6.0%
|
|
Sodium chloride
|
0.1%
|
≤0.1%
|
|
Heavy metals
|
≤10ppm
|
≤10ppm
|
|
Apparent viscosity
|
18.1
|
15.0～19.0
|
|
C2/C6 ratio
|
Complies
|
5~6:1
|
|
Substitution degree
|
0.47
|
0.46～0.54
|
|
Glycol
|
0.003%
|
Not more than 0.004%
|
|
Epoxy ethane
|
0%
|
Not more than 0.0001%
|
|
2-chloroethanol
|
0%
|
Not more than 0.0005%
|
|
bacterial endotoxin
|
Complies
|
≤2.5IU/g
|
|
Assay
|
98.6%
|
97.0%-101.0%
|
|
