Aluminum Hydroxide

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We have a complete range of products with more than 50 kinds of aluminum hydroxide and aluminum oxide products, which are widely used in composite materials BMC/SMC, artificial marble, electronic copper cladding boards, refractory materials, flame-retardant materials, wires and cables, insulators, LED lamps, ceramic rolled rods and other industries. Product particle size can be customized according to customer requirements.

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Aluminum Hydroxide

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Aluminum Hydroxide

Al(OH)₃（ordinary）

CAS NO. 21645-51-2

▎General Properties

Molecular weight	78	Mohs hardness	3
Density g/cm³	2.4	Ratio of refraction	1.58

▎Physical and Chemical Properties

Item/Model		HJM-3K	HJM-5K	HJM-8K	HJM-10K	HJM-15K	HJM-20K	HJM-25K	HJM-35K
Chemical constituent	Al(OH)₃ [%] ≥	99.5	99.5	99.5	99.5	99.5	99.5	99.5	99.5
	Al₂O₃ [%] ≥	64.5	64.5	64.5	64.5	64.5	64.5	64.5	64.5
	SiO₂ [%] ≤	0.02	0.02	0.02	0.02	0.02	0.02	0.02	0.02
	Fe₂O₃ [%] ≤	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01
	Na₂O [%] ≤	0.30	0.30	0.30	0.30	0.30	0.30	0.30	0.30
	Loss on ignition ≤	35.0	35.0	35.0	35.0	35.0	35.0	35.0	35.0
	Attached water ≤	0.4	0.3	0.3	0.3	0.3	0.3	0.3	0.3
	+325 mesh 325mesh ≤	0.01	0.01	0.01	0.1	15	25	-	-
	oil absorption ≈	32	31	27	27	23	22	20	20
Mean particle diameter（D50） µ m≈		3.5	5	9	10	15	20	25	35
Whiteness [R457] ≥		93	93	92	92	90	87	86	85
PH value ≈		9

Al(OH)₃（ordinary）

CAS NO. 21645-51-2

▎General Properties

Molecular weight	78	Mohs hardness	3
Density g/cm³	2.4	Ratio of refraction	1.58

▎Physical and Chemical Properties

Item/Model		HJ-80K	HJ-80W	HJ-90K
Chemical constituent	Al(OH)₃ [%] ≥	99.5	99.5	99.5
	Al2O₃ [%] ≥	64.5	64.5	64.5
	SiO₂ [%] ≤	0.02	0.02	0.02
	Fe2O₃ [%] ≤	0.01	0.01	0.01
	Na₂O [%] ≤	0.30	0.30	0.30
	Loss on ignition ≤	35.0	35.0	35.0
	Attached water ≤	0.3	6	0.3
Mean particle diameter（D50） µ m ≈		80	80	95
+80mesh ≤		0.5	-	0.5
Whiteness [R457] ≥		72	72	70
PH value ≈		9