CHARACTERS:
In the form of off-white, free-flowing powder.
Odorless or with a faint characteristic odor.
Soluble in water and many organic solvents.
Inert physiologically.
SPECIFICATIONS:
K17
K25
K30
K90
K value
15-19
23-27
27-32
81-99
Vinylpyrrolidone,%
≤0.2
≤0.2
≤0.2
≤0.2
Water,%
≤5.0
≤5.0
≤5.0
≤5.0
Sulfate ash,%
≤0.1
≤0.1
≤0.1
≤0.1
Nitrogen,%
11.5-12.8
11.5-12.8
11.5-12.8
11.5-12.8
pH of 10% solution
3.0-7.0
3.0-7.0
3.0-7.0
3.0-7.0
Heavy metals（as Pb）,ppm
≤10
≤10
≤10
≤10
Acetaldehyde,ppm
≤500
≤500
≤500
≤500
Hydrazine,ppm
≤1
≤1
≤1
≤1
Peroxides（as H2O2）,ppm
≤400
≤400
≤400
≤400
APPLICATIONS:
√
Excellent pharmaceutical excipients. √ Granulation binders for tablets.
√ Solubilizers and suspending agents for injections.
√ Dispersants for dye and pigment in tablet and capsule coating.
√ Stabilizers for enzymes and heat sensitive drugs.
√ Coprecipitates for poorly soluble drugs.
√ Lubricators and detoxifiers in ophthalmic solutions.
√ Stabilizers for suspensions of all kinds of active substances.
√ Viscosity adjustors, cohesive agents, stabilizers and protective
colloids in oral liquid and other liquid formulations.
