Calcium being an auxiliary drier, has little drying action in itself but is very useful in combination with active driers like Cobalt & Lead Octoate.
In vehicles that show poor tolerance for lead, calcium can replace part of the lead with a larger amount of calcium to prevent the precipitation of the lead & maintain drying efficiency. Calcium is often used to replace lead where toxicity of lead must be avoided. Calcium is also useful as pigment wetting & dispersing agents & help to improve hardness & gloss & reduce “Silkins”. When ground with drier adsorbing pigments, calcium minimizes loss of dry by being preferentially absorbed.
| Sr. No. | Products | Color | Metal Content % (+/- 0.2) |
Non Volatile at 120°C/Hr (+ / - 5) |
Specific Gravity at 30°C (+/ - 0.03) |
Viscosity at 30°C (+ / - 3) |
|---|---|---|---|---|---|---|
| 1. | CALCIUM OCTOATE (CAS 27253-33-4) |
COLORLESS | 10 | 52 | 0.98 | 14 |
| 2. | 5 | 50 | 0.90 | 20 | ||
| 3. | 3 | 30 | 0.84 | 12 |