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MAGNESIUM HYDROXIDE - CAS No.: 1309 - 42 - 8

Magnesium Hydroxide is a Non-Halogenated high thermal stable and non corrosive smoke suppressant as well as an acid scavenger. Its high thermal stability - up to 340° C enables its use where Aluminium Trihydrate is not sufficiently stable.

Specifications

Commercial Name: ZB fire-retardent

Chemical Name: Low Water Zinc Borate

General Formula: 2ZnO .3B2O3 .3.5H2O

Specifications		BR-2000	BR-4000
Physical Properties	MgO% >	64%	64%
	Apparent Spec.gravity g/ml	0.75	0.34
	Hardness	2.5	2.5
	Dewatering Temp. ° C	340	340
	Thermal Weight Loss % under 1,000 degrees	30%	30%
	Water Content % (110° C)	0.5%	0.5%
	Whiteness % >	94%	97%
	Particle Size D100: <	45um	5um
	Um D 50: Sedimentation Method	9um	1.5um

Magnesium Hydroxide provides flame retardance through FIVE mechanisms:

1. Magnesium Hydroxide produces more char than ATH resulting in increased effectiveness and less smoke.
2.It dilutes the amount of fuel available to sustain combustion.
3.During combustion, Magnesium Hydroxide generates a highly reflective Magnesium Oxide coating which deflects the flame’s heat away from the polymer.
4.Magnesium Hydroxide contains 31% bound water which is released beginning at 330° C and blankets the flame to limit oxygen available for combustion.
5.Magnesium Hydroxide absorbs 17% more heat from the combustion zone than ATH to reduce the prospect of continued burning.

MAGNESIUM HYDROXIDE - CAS No.: 1309 - 42 - 8

Specifications

Magnesium Hydroxide provides flame retardance through FIVE mechanisms:

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