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indicator blue silica gel desiccant dmf free silica gel
- 30000 Ton / Tons per Month
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Product Details
CAS No.: | 112926-00-8 | Other Names: | color changing silica gel | MF: | sio2 |
EINECS No.: | 231-545-4 | Purity: | 99.6% | Place of Origin: | Shandong, China |
Type: | Adsorbent | Adsorbent Variety: | Silica Gel | Usage: | Coating Auxiliary Agents, Electronics Chemicals, Leather Auxiliary Agents, Paper Chemicals, Petroleum Additives, Plastic Auxiliary Agents, Rubber Auxiliary Agents, Textile Auxiliary Agents, Water Treatment Chemicals |
Brand Name: | wufeng | Model Number: | 1-3mm,2-4mm,3-5mm |
Product Description
Dmf free silica gel
dmf free silica gel
Specifications
Blue Silica Gel
Type: 1-3mm, 2-4 mm,3-6mm
Package material: Non-woven fabric ,OPP,cotton,tyvek
Colloidal Silica/Silica Sol
Characteristics
Silica sol belongs to colloid. It is odorless, tasteless and nontoxic. Its chemical molecular formular is mSiO2.nH2O.
1).Since the colloid grains are minute (10-20nm) and have relatively large specific surface area, the grains themselves are colorless and transparent, so they do not affect the natural color of the materials to be covered.
2).With low viscosity, it can soak the places where water soaks, therefore, it presents excellent dispersion and permeability when being mixed with other substances..
3).When the moisture contained in silica sol are evaporated, the colloid grains firmly adhere to the material surface and the combination of silicon and oxygen is then formed between grains. It is a good adhesive.
Use
1).Used as the cohesive agent for various fireproof materials. It has high bonding strength and high heat-resisting performance (1500-1600°C), etc.
2). Used in coating industry. It makes the paints firm. It also possesses features, such as anti-contamination, dustproof, anti-aging, fireproof, etc.
3). Used in precision casting of thin covers to increase the cover strength, inprove the casting smooth finish. Its molding quality is better than that of water glass. It can be used to replace ethyl silicate for molding so as to reduce the costs and help improve the operating conditions.
4). Having large specific surface area, silica sol can be use for making catalyst and as catalyst carrier.
5). Used in paper-making industry. Can be used as the anti-glutinous agent of cellophane, pre-treatment agent of photographic paper, skidproof agent of cement bags, etc.
6). Used as sizing agent in textile industry. When used with oil agent to process wool and rabbit hair, it helps improve the processing of wool and rabbit hair, reduce broken ends, eliminate flyings, thus improve the finished product rate and increase the economic returns.
Technical Data
ITEM | Basic sodium type | Acidic non-stabilizer type | Typical values | ||||||
JN--20 | JN--25 | JN--30 | JN--40 | SW--20 | SW--25 | SW--30 | JN--30 | SW--25 | |
SiO2, % | 20.0-21.0 | 25.0-26.0 | 30.0-31.0 | 40.0-41.0 | 20.0-21.0 | 25.0-26.0 | 30.0-31.0 | 30.3 | 25.6 |
Na2O, % ≤ | 0.30 | 0.30 | 0.30 | 0.40 | 0.04 | 0.05 | 0.06 | 0.25 | 0.04 |
pH value | 8.5-10.0 | 8.5-10.0 | 8.5-10.0 | 9.0-10.5 | 2.4-4.0 | 2.4-4.0 | 2.4-4.0 | 9.6 | 2.8 |
Viscosity (25°C),mpa. s ≤ | 5.0 | 6.0 | 7.0 | 25.0 | 5.0 | 6.0 | 7.0 | 5.4 | 3.0 |
Density (25°C),g/cm3 | 1.12-1.14 | 1.15-1.17 | 1.19-1.21 | 1.28-1.30 | 1.12-1.14 | 1.15-1.17 | 1.19-1.21 | 1.20 | 1.16 |
Average particle diameter,nm | 10-20 | 10-20 | 10-20 | 10-20 | 10-20 | 10-20 | 10-20 | 11 | 10 |
Term of validity
One year for the alkali based, half a year for the acid based.
Packaging
25kg or 250kg per plastic drum.
Conditions for storage and transportation
Maintain 0-40°C during storage and transportation to avoid freezing of exposing to the sun.
Contact Us
- Rushan Wufeng Silica Gel Co., Ltd.
- Contact nameJack Kung
- Phone86-631-6268088,13754639277
- Address1 Huizhou Road, Jinling Development Area
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