CAS No. |
9000-70-8 |
Other Names |
photo gelatin |
MF |
C102H151O39N31 |
EINECS No. |
232-554-6 |
Place of Origin |
Hebei, China (Mainland) |
Grade Standard |
photo grade |
Application |
Film, photographic paper, ink-injection photographic paper |
Production Description
Gelatin is the best medium known for making photographic emulsions.
Gelatin for photographic use is primarily Type B alkaline processed gelatin, especially for emulsion preparation. Type A gelatin has limited application for top coating and subbing. Although cattle hides have been used, Type B photographic gelatin is generally made from ossein derived from bone.
Specifications for type B bone photographic gelatin
Item |
Standards |
Moisture, % |
10.5 – 13.0 |
pH |
5.65 – 5.85 |
Viscosity 6.67% 60 °C, mps |
74.0 – 95.0 |
Gel strength 6.67% 60 °C, grams |
250 – 310 |
Absorbance, 420nm |
0.0 – 0.158 |
Absorbance, 650nm |
0.0 – 0.032 |
Viscosity loss 37 °C 24hours, % |
< 5% |
Use: Film, photographic paper, ink-injection photographic paper.
Package: 25kgs net kraft paper bag on pallet shrink-wrapped.
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