Description：: It is white, loose, amorphous, non-toxic and non-odorous nonmetal oxide. Due to the nanometer effect, it has excellent properties, such as reinforce, bodying, thixotropy, insulation and others. Therefore, it can be widely used in the rubber, plastic, paint coating, adhesive, seals and other polymer industrial area.

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DETAILS

1. Product Name: Fumed Silica

2.Molecular Formula: SiO₂

3.CAS No.: 112945‑52‑5

4.Vapour Pressure: 32hPa (25℃)

5.Relative Density (water=1): 0.22g/cm³

6.Technological Index

Item	SD‑151	SD‑612	SD‑615	SD‑132	SD‑139	SD‑152	SD‑620	SD‑630
Appearance	White Powder	White Powder	White Powder	White Powder	White Powder	White Powder	White Powder	White Powder
Surface Area (m²/g)	120±30	140±20	140±20	140±20	110±30	170±30	170±30	330±30
PH Value in Aqueous Dispersion	≥ 3.7	5.0~8.0	5.0~8.0	6.0~9.0	4.0~7.0	≥ 3.7	6.0~9.0	6.0~9.0
Volatilization Loss (105℃) /% ≤	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7
Ignition Loss /% ≤	2.5	2.0	4.0	4.0	10.0	2.5	4.0	5.0
Silicon Dioxide /% ≥	99.8	99.8	99.8	99.8	99.8	99.8	99.8	99.8
Tamping Density g/L	40~60	40~60	40~60	40~60	40~60	40~60	40~60	40~60
Carbon /%	0.6~1.2	0.7~1.3	1.0~1.7	2.0~4.0	4.0~7.0	0.8~1.6	1.5~2.5	2.5‑4.0
Treatment Type	DDS	HMDS	HMDS	HMDS	PDMS	DDS	HMDS	HMDS

7.Application and Usage
It is white, loose, amorphous, non‑toxic and non‑odorous nonmetal oxide. Due to the nanometer effect, it has excellent properties, such as reinforce, bodying, thixotropy, insulation and others. Therefore, it can be widely used in the rubber, plastic, paint coating, adhesive, seals and other polymer industrial area.

8. Package, Storage and Handling
N.W 10KG/bag.
Keep in a cool, dry, well‑ventilated place. Store away from incompatible substances such as oxidizing agents.

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