Aluminum Hydroxide

High whiteness aluminum hydroxide for filler (carbonating process)

Aluminum hydroxide features good fire resistance because of high whiteness (Reputed as China White), low oil absorption, good stability at room temperature and dehydrated to alumina while heating. It’s a good flame retardant filler because no toxic and corrosive gases are generated during the thermal decomposition. It's widely used in the solid surface, molded plastic materials, epoxy potting compound and other composite materials.

Specification
Product code Chemical composition % DOP oil absorption Whiteness Particle size Moisture
AI(OH)3≥ SiO2≤ Fe2O3≤ Na2O≤ Na2o(s)≤ Ml/100g≤ %≥ D50mm +325 mesh%≤ %≤
H-WF-8 99.6 0.05 0.02 0.30 0.03 33 96 8±2 3 0.4
H-WF-10 99.6 0.05 0.02 0.30 0.03 33 96 10±2 4 0.3
H-WF-14G 99.6 0.05 0.02 0.30 30 90 11±3 0.3
H-WF-14LV 99.6 0.05 0.02 0.30 0.03 29 95 13±3 15 0.3
H-WF-14 99.6 0.05 0.02 0.30 0.03 32 95 15±3 15 0.3
H-WF-15A 99.6 0.04 0.01 0.20 0.03 32 98 13±2 0.3
H-WF-25 99.6 0.05 0.02 0.30 0.03 32 95 25±5 0.2
H-WF-75 99.6 0.05 0.02 0.25 0.03 40 93 85±15 0.1
H-WF-90 99.6 0.05 0.02 0.25 0.02 40 93 100±20 0.1
H-WF-100 99.6 0.1 0.02 0.30 40 90 ≥90 0.1

Aluminum hydroxide for filler (seeding process )

It is produced by precipitaion method with the sodium aluminate solution from sintering process as the seeds. It’s characterized by slow decomposition rate, complete crystallization, low impurity, high intensity and good transparency.

It has the texture properties of jade, which can be used as superior filler in the solid surface, crafts and other composites.

Specification
Product code Chemical composition % DOP oil absorption Whiteness Particle size Moisture
AI(OH)3≥ SiO2≤ Fe2O3≤ Na2O≤ Na2o(s)≤ Ml/100g≤ %≥ D50mm +325 mesh%≤ %≤
H-WF-14SP 99.6 0.03 0.02 0.20 0.02 30 95 16±3 12 0.3
H-WF-25SP 99.6 0.03 0.02 0.20 0.02 30 94 25±5 0.2
H-WF-25MSP 99.6 0.03 0.02 0.20 0.02 21 95 0.2
H-WF-50SP 99.6 0.03 0.02 0.20 0.02 30 93 50±10 0.2
H-WF-75SP 99.6 0.03 0.02 0.20 0.02 30 92 85±15 0.1
H-WF-90SP 99.6 0.03 0.02 0.20 0.02 30 91 95±20 0.1

Extra fine aluminum hydroxide

Super fine aluminum hydroxide is generated from high purity sodium aluminate solution by precipitation process, with the characteristics of fine particle size, high whiteness and purity.

It's widely used as the insulator, flame retardant and filler in cable, rubber, foam insulation, silastic, paper-making and PVC industries.

Specification
Product code Chemical composition % D50um +325 mesh%≤ Oil absorption Ml/100g≤ Whiteness ≥ Electrical conductivity mS/cm Moisture %≤
AI(OH)3≥ SiO2≤ Fe2O3≤ Na2O≤ Na2o(s)≤
H-WD-1S 99.3 0.02 0.01 0.5 0.05 0.5-1.0 0.1 55 97 200 0.5
H-WF-1 99.7 0.02 0.01 0.3 0.03 0.8-1.4 0.1 45 97 120 0.35
H-WF-2N 99.7 0.02 0.01 0.3 0.03 1.2-2 0.1 45 96 120 0.35
H-WF-5 99.6 0.1 0.02 0.3 0.03 4-7 3 32 96 120 0.4

Low viscosity aluminum hydroxide filler

This low viscosity aluminum hydroxide filler features good particle morphology, which is mainly used in BMC (bulk molding compound) / SMC (sheet molding compound), injection molded plastics, thermosetting insulation board, electrical insulation materials, etc.

Specification
Product type 10LV (High whiteness) 10LV (Middle-class whiteness)
Moisture ≤0.3 ≤0.3
Al(OH)3 99.6% 99.6%
SiO2 ≤0.03% ≤0.03%
Fe2O3 ≤0.015% ≤0.015%
Na2O ≤0.3 ≤0.3
pH ≤9.7 ≤9.8
+325 mesh ≤1 ≤1
D50 um 9-12 9-12
Whiteness 95 93
Oil absorption ml/100g ≤28 ≤29
Viscosity cP 100,000 300,000
Bulk density g/cm3 0.7-0.9 0.7-0.9

Aluminum hydroxide, technical grade

Molecular formula: Al(OH)3
CAS No.: 21645-51-2

Specification
Appearance White / pale grey powder
Al2O3 content ≥64.5%
SiO2 content ≤0.03%
Fe2O3 content ≤0.02%
Na2O content ≤0.40%
LOI ≤35.0%
Moisture ≤12%
Application

Water treatment, filler and production of other aluminium salts

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