Physical properties
Real specific gravity: 1.46
Apparent density: 0.45~0.70g/mL (tapped)
Solubility: HPC does not dissolve in water but swells. It neither dissolves nor swells in ordinary organic solvents, but dissolves in a 10% NaOH solution to give a viscous solution.
Package and storage
Pack in drums, net weight 20kg per drum.
Store in sealed container, keep away from sunlight & moisture.
Available grades and specifications
Test Item
|
Unit
|
Specification
|
Specification
|
Specification
|
|
|
|
JOINPURE LP11
|
JOINPURE LP21
|
JOINPURE LP22
|
|
Appearance
|
|
White to Yellowish white
|
White to Yellowish white
|
White to Yellowish white
|
|
Identification A
|
|
Conforms
|
Conforms
|
Conforms
|
|
Identification B
|
|
Conforms
|
Conforms
|
Conforms
|
|
Identification C
|
|
Conforms
|
Conforms
|
Conforms
|
|
pH
|
|
5.0-7.5
|
5.0-7.0
|
5.0-7.5
|
|
Loss on drying
|
%
|
5.0 Max
|
5.0 Max
|
5.0 Max
|
|
Residue on ignition
|
%
|
0.5 Max
|
0.5 Max
|
0.5 Max
|
|
Chloride
|
%
|
Not more than 0.36
|
Not more than 0.36
|
Not more than 0.36
|
|
Heavy metals
|
%
|
Not more than 0.001
|
Not more than 0.001
|
Not more than 0.001
|
|
Hydroxypropoxyl Content
|
%
|
10.0 – 12.9
|
10.0 – 12.9
|
7.0 – 9.9
|
|
Particle size: Retain on 180 μm
|
%
|
Max 0.5
|
1.0 Max
|
1.0 Max
|
|
Particle size: Pass through 150 μm
|
%
|
Min 98
|
90 Min.
|
90 Min.
|
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