Silicon Dioxide (SiO2) Micropowder, Silica Powder

Product Overview

 

Synonyms: Pure Crystalline Silica Powder, Quartz Nanopowder, SiO₂ Nanoparticles, Silicic oxide Micropowder,

We also produce Precipitated Silica(White Carbon Black).

Chemical Formula: SiO₂

CAS Number: 7631-86-9

EINECS Number: 231-545-4

Silicon powder is a non-toxic, tasteless, non-metallic mineral powder, made from natural quartz or fused quartz by crushing, ball milling (or vibrating, air milling), flotation, acid pickling purification, high-purity water treatment and other processing. It has features of high hardness, low oil absorption, easy to disperse, not easy to precipitate, strong stability, acid corrosion resistant, and so on. Therefore, it is widely used in chemical, electronic, integrated circuit (IC), electrical appliance, plastic, coating, advanced paint, rubber, national defense and other fields. With the rapid development of high-tech field, Silicon dioxide micropowder will also enter a new period of historical development.

 

 

 

Product Data

L-Series

Product Code	Median diameter	Oil absorption value	Refractive index	pH value
L020	44 μm	16	1.55	7.0
L032	19 μm	19	1.55	7.0
L050	13 μm	20	1.55	7.0
L070	10 μm	21	1.55	7.0
L125	5 μm	23	1.55	7.0
L250	2.7 μm	26	1.55	7.0
L800	1.3 μm	29	1.55	7.0

H-Series

Product Code	Median diameter	Oil absorption value	Refractive index	pH value
H032	19 μm	18	1.54	7.0
H050	13 μm	19	1.54	7.0
H070	10 μm	20	1.54	7.0
H125	5 μm	21	1.54	7.0
H300	2.7 μm	25	1.54	7.0
H800	1.3 μm	29	1.54	7.0

If the above median diameter is not what you need, we can customize.

Silicon Dioxide (SiO₂) Micropowder Composition

We are the largest manufacturer of ultra-fine silica powder produced by jet milling in South China. ANYWHERE POWDER silica powder is using high purity siliceous minerals as raw material, producing with wave and airflow impact of near zero pollution.

Chemical Composition

Composition	SiO2	Al2O3	Fe2O3	MgO	CaO	NaO
Average value	>99.3%	≤0.07	≤0.01	≤0.01	≤0.01	≤0.01

Features: Acid and Alkali Resistant, High Insulation, Environmental Protection, Ultra White, High Flame Retardant, High Purity, Low Expansion, High Thermal Conductivity, Strong Weather Resistant, Particle Size Even, Corrosion Resistant, Ultra Fine.

 

ANYWHERE POWDER Silicon Dioxide Micropowders vs. Others

	Others	ANYWHERE POWDER L-Series	ANYWHERE POWDER H-Series
Median diameter	Mainly 10~53μm, fewer small size grades	1.3~45μm, many grades	1.3~45μm, many grades
Big particle	Contain, have high potential risk	NO big particle	NO big particle
Microscopic shape	non-spherical	Nearly spherical	Nearly spherical
Particle-size distribution	wide range, hard to control	narrow range, D50<½D97	narrow range, D50>½D97
Purity	Contain non-quantitative heavy metals, high Fe-Al content	High purity, high whiteness	Ultra purity, ultra whiteness
Price	Primitive process, poor quality, high price	Mature process, large capacity, good Cost-Performance ratio	Higher, better Cost-Performance ratio
Application	Narrow areas, mainly middle-end and low-end	mainly middle-end, less high-end	Wide area, mainly high-end

Our Silicon Dioxide Test Report

	Standard value	Test result value	Test result
SiO2	≥99.2%	99.6%	Passed
Loss on ignition	≤0.3%	0.16%	Passed
Oil absorption value	≤25 g/100g	22 g/100g	Passed
Whiteness at ambient temperature	≥94%	95.6%	Passed
D97 particle size	≤25 μm	20.1 μm	Passed
D50 particle size	8.5(±2.5) μm	9.0 μm	Passed
Aluminium oxide	≤0.05%	0.01%	Passed
Iron oxide	≤0.01%	<0.01%	Passed
Mohs hardness	7	7	Passed
pH value	5.0-7.0	7	Passed
Heavy metal	<100mg/kg	/	Passed

Applications