R649 Silica Dds

• Customization: Available
• CAS No.: 112 945-52-5
• Formula: Sio2
• Model NO.: Silica R649
• Certification: MSDS ,SGS
• Environmental Protection: Yes
• Function: Silica
• Appearance: Powder
• Color: White
• Transport Package: 10kgs Paper Bag
• Specification: R649
• Trademark: Lerona
• Origin: China
• HS Code: 28112290
• Production Capacity: 30 Ton/Month

Product Description

Fumed silica, Hydrophobic
type:R649

same as AEROSIL R972
Hydrophilic fumed silica by DDS (dimethyl dichloro ) treatment
Specific surface area(BET): 110+-20 m2/g       PH:3.6-4.5 
SiO2:99.8% min   Average primary particle size:12 nm    Moisture:1.5% max
Bulk density:50 g/l   Loss ignition:2.0% max    Carbon content:0.6-1.2% max
Hydrophobicity,  wetting value: 35-45%
Packing: 10 kgs Three-layer kraft paper bag, on one pallet
The capacity of one 20GP: 2.2 tons(88 bags)
Usage: Silicone Rubber,  Sealant, Ink, Adhesive, Cable Material


Silica Properties
A:Hydrophobic product for thickening and reinforcement of RTV-1K one-component mailer silicone sealant
B:Improve the storage performance of silicone sealants
C:For paint anti-settling to improve pigment stabilization and enhance anti-settling effect
D:Hydrophobicity and water repellency of liquid systems
E:Improve hydrophobicity and rheology of offset printing inks