I: PVP-K Homopolymer Series
• Technical grade
Items |
K17 |
K17 (liquid) |
K30 |
K30 (liquid) |
K60 |
K60 (liquid) |
K90 |
K90 (liquid) |
K value |
15-22 |
15-22 |
25-36 |
25-36 |
55-65 |
55-65 |
81-100 |
81-100 |
Vinylpyrrolidone % max |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
Moisture % max |
5.0 |
--- |
5.0 |
--- |
5.0 |
--- |
5.0 |
--- |
Solid content % max |
95 |
39-41 |
95 |
29-31 |
95 |
39-41 |
95 |
19-21 |
pH(5% solution) |
3-7 |
3-7 |
3-7 |
3-7 |
5-9 |
5-9 |
5-9 |
5-9 |
Sulphate ash % max |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
• Cosmetic grade
Items |
K17 |
K17 (liquid)
|
K30 |
K30(liquid)
|
K90 |
K90 (liquid)
|
K value |
15-22 |
15-22 |
25-36 |
25-36 |
81-100 |
81-100 |
Vinylpyrrolidone % max |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
Moisture % max |
5.0 |
--- |
5.0 |
--- |
5.0 |
--- |
Solid content % max |
95 |
39-41 |
95 |
29-31 |
95 |
19-21 |
pH(5% solution) |
3-7 |
3-7 |
3-7 |
3-7 |
5-9 |
5-9 |
Sulphate ash % max |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
• Pharmaceutical grade(CP2005/USP26)
Items |
K15 |
K17 |
K25 |
K30 |
K90 |
K value |
13-18 |
15-19 |
23-27 |
29-32 |
88-96 |
Vinylpyrrolidone % max |
0.01 |
0.01 |
0.01 |
0.01 |
0.01 |
Moisture % max |
5.0 |
5.0 |
5.0 |
5.0 |
5.0 |
Solid content % max |
95 |
95 |
95 |
95 |
95 |
pH(5% solution) |
3-7 |
3-7 |
3-7 |
3-7 |
5-9 |
Sulphate ash % max |
0.1 |
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 |
11.5-12.8 |
2-Pyrrolidone % max |
3.0 |
3.0 |
3.0 |
3.0 |
3.0 |
Aldehyde ppm max |
500 |
500 |
500 |
500 |
500 |
Heavy metal ppm max |
10 |
10 |
10 |
10 |
10 |
Hydrazine ppm max |
1 |
1 |
1 |
1 |
1 |
Peroxide ppm max |
400 |
400 |
400 |
400 |
400 |
II. PVP Iodine (PVP I) (CP2005/USP26/EP5.0)
Appearance |
Free flowing, brown powder |
Identification |
A. A deep blue colour is produced |
B. A dry brown colour film formed which is readily dessovled in water
|
Available Iodine % |
9.0-12.0 |
Iodine % max |
6.6 |
Heavy Metal ppm max |
20 |
Sulphate Ash %max |
0.1 |
Nitrogen % |
9.5-11.5 |
PH value(10% in water) |
1.5-5.0 |
Loss on drying %max |
8.0 |
III. PVP-VA Copolymer Series
• Cosmetic grade
Items |
VA73E |
VA64E |
VA37E |
VA73W |
VA64W |
VA64 Powder |
Appearance |
Colorless viscous liquid |
White powder |
K value |
30-38 |
26-34 |
28-36 |
24-32 |
26-34 |
26-34 |
Vinylpyrrolidone % max |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
Moisture % max |
0.5 |
0.5 |
0.5 |
Ca50 |
Ca50 |
5.0 |
Solid content % max |
48-52 |
48-52 |
48-52 |
48-52 |
48-52 |
95 |
pH(5% solution) |
--- |
--- |
--- |
4-7 |
4-7 |
4-7 |
Sulphate ash % max |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
2. Copovidone, Pharmaceutical grade(BP2003/EP5.0)
Appearance |
White or yellowish-white powder |
Aldehydes ppm max |
500 |
Peroxide ppm max |
400 |
Hydrazine ppm max |
1 |
Vinyl Pyrrolidone % max |
0.1 |
Impurity A( 2-pyrrolidone), %max |
0.5 |
Heavy Metal ppm max |
20 |
Loss on drying% max |
5 |
Sulphated ash% max |
0.1 |
Viscosity,expressed as K value |
25.2-30.8 |
Ethenyl acetate% |
35.3-42 |
Nitrogen % |
7.0-8.0 |
Ⅳ . Crospovidone (PVPP Series)(USP26/EP5.0)
Appearance |
White or off-white granular free flowing powder
|
Water solubles %max |
1.5 |
PH( (1% water) |
5.0-8.0 |
Moisture % max |
5.0 |
Residue on ignition % max |
0.4 |
Nitrogen % |
11.0 -12.8 |
Vinyl Pyrrolidone % max |
0.1 |
Heavy Metal ppm max |
10 |
Particle Size ( μ m ) |
Type A |
50-300 |
Type B |
<50 |
Peroxide, ppm max |
Type A |
400 |
Type B |
1000 |
Ⅴ . N-Vinyl-2-Pyrrolidone (NVP ) (Industrial grade)
Assay , % min |
99.0 |
Water, % max |
0.5 |
2-Pyrrolidone, % max |
0.2 |
Color,APHA, max(after addition of inhibitor) |
100 |
Boiling range, °C @13mbar |
90-92 |
Melting point, °C |
13.6 |
Density @ 20 °C , g/ml |
1.043 |
Flash point, °C |
95 |
Viscosity @ 20 °C , mPa.s |
2.4 |
Ⅵ . 2-Pyrrolidone
Appearance @25 deg.C |
Clear Liquid |
Purity,% min |
99.0 |
Moisture, % max |
0.3 |
Color,APHA, max |
100 |
Melting point, °C |
24.6 |
Density @ 25 °C , g/ml |
1.116 |
Flash point, °C |
129.4 |
Viscosity @ 25 °C , cps |
13.3 |
|
