Item Industrial grade Medical grade Photo gradeAppearance White powder or crystal White powder or crystal White powder or crystal
Content 98.0%min 99% min 99.5% min
Loss on drying 1%max 0.5% max 0.3% max
Chloride ≤ 3.0% 0.5% max 0.2% max
PH 5.5-8.5 5.5-8.5 5.5-8.5
- Industrial grade: carving, stone printing;- Pharmaceutical grade: sedative;
- Phtography grade: photographic film.
Placed in sealed container and kept in a cool and dry place.Avoid strong vibration, insolation, high temperature, smoke and fire.