magnesium hydroxide
Magnesium Hydroxide
Magnesium Hydroxide is a white powder with specific gravity of 2.36. , very slightly soluble in water; decomposing at 350°C. Magnesium Hydroxide is an inert filler, flame retardant and smoke suppressant for plastics,synthetic rubber, reinforced polyesters, phenolics and urethane foam.Magnesium hydroxide releases its 31% water when heated to above 325°C, Which cools the product below flash point to reduce fire occurrence. Medicinally it, in the form of a mixture (milk of magnesia), is also used as an antacid and as a osmotic laxative.
| Specification of Magnesium Hydroxide : | |
| Mg(OH)2 | >=97% |
| H2O+ | 31% |
| CaO | 0.5% Max. |
| MnO | 0.01% Max |
| CuO | 0.006% Max |
| Fe2O3 | 0.3% Max |
| Whiteness | 93% min. |
| Average Particle size (Microns) | varies as per grade from 1 - 45 microns |
| Organic Coating | <=3% |
| Ph | About 9.5 |
| Moisture | 0.5% max |
| Density | 2.3 |
Advantage:
- Initial dehydration temperature is 340°C, suitable for high temperature process of the flame – retardant rubber and plastic
- The effectiveness of flame – retardant and smoke suppressant is better than Aluminum Hydroxide
- Magnesium Hydroxide also has strong reinforcement due to high fineness & the surface is coated specially
Usage:
- Widely used for flame - retardant rubber and plastic products that must be lower halogen, non-halogen, low-smoking. Also can be used in thermoplastic and elastomers such as EVA, EPDM, PVC, PE, PP resins, aluminium composite panel compound, etc.
