SILICA REAGENT NO 1
DIATOMACEOUS EARTH
CAS: 68855-54-9
Molecular Formula: SiO2
SILICA REAGENT NO 1 - Names and Identifiers
SILICA REAGENT NO 1 - Physico-chemical Properties
| Molecular Formula | SiO2 |
| Molar Mass | 60.084 |
| Density | 0.47 g/cm3 (loose weight)(lit.) |
| Melting Point | >450℃ |
| Water Solubility | Insoluble in water. |
| Appearance | Morphological rod (1/8 |
| PH | >8.5 (25℃, 10% in aq. suspension) |
| Storage Condition | Store at RT. |
| MDL | MFCD00132803 |
| Physical and Chemical Properties | Chemical properties White to light gray or beige porous powder. The drying quality is light, the apparent relative density is 0.15~0.45, and it can temporarily float in water. The relative density is 1.9~2.35. The size is about 25 μcm. It has strong water absorption (it can absorb 1.5~4.0 times the weight). Insoluble in water, acids (except hydrofluoric acid) and dilute alkali, soluble in strong alkali. This product is divided into natural powder, calcined powder, molten calcined powder and pickling powder. |
| Use | Use 1, filter aid (sugar refining, wine, beer, beverage, etc.); Combined with activated carbon can improve the decolorization effect and adsorption of colloid. The amount used depends on the production needs (GB 2760-96 for food processing aids). Food residues should be less than or equal to 0.5%. 2, mainly used as thermal insulation materials, chemical packing and loading |
SILICA REAGENT NO 1 - Risk and Safety
| Risk Codes | R48/20 - R49 - May cause cancer by inhalation R36/37 - Irritating to eyes and respiratory system. R36/38 - Irritating to eyes and skin. R45 - May cause cancer R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S22 - Do not breathe dust. S36 - Wear suitable protective clothing. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S53 - Avoid exposure - obtain special instructions before use. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S39 - Wear eye / face protection. |
| WGK Germany | 2 |
| RTECS | VV7311000 |
| TSCA | Yes |
| HS Code | 3802 90 00 |
SILICA REAGENT NO 1 - Upstream Downstream Industry
| Raw Materials | Flux No. 310 SPECTROFLUX |
| Downstream Products | 2-CHLORO-4,5-DIAMINOPYRIDINE HYDROCHLORIDE 6-CHLORO-3,4-PYRIDINEDIAMINE |
SILICA REAGENT NO 1 - Reference
| Reference Show more | 1. Peng Ying, Liu Han Wei Feng et al. Study on the GC-MS fingerprint of the fat soluble components of Danqi Soft Capsule [J]. China pharmacy 2018 029(006): 776-768. |
SILICA REAGENT NO 1 - Nature
| solubility | <0.001g/l |
| EPA chemical information | Kieselguhr, soda ash flux-calcined (68855-54-9) |
Last Update：2024-04-10 22:29:15
SILICA REAGENT NO 1 - Production method
natural powder is obtained by grading and screening diatom remains after air drying (<800 ℃). It is gray to beige.
Calcinable powder is formed by air drying, sieving, calcining at high temperature (815~982 ℃), and then grading. It is pink to off-white.
The molten calcined powder (white) is dried in air and screened, and then melted and calcined (800~1200 ℃) in the presence of flux (soda ash or other alkali salts) and then graded.
The acidic powder is formed by drying one of the above three powders after pickling and water leaching.
Last Update：2024-04-10 22:29:15
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Spot supply
Product Name: Celite 545 Visit Supplier Webpage Request for quotationCAS: 68855-54-9
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Spot supply
Product Name: Celite 545 Visit Supplier Webpage Request for quotationCAS: 68855-54-9
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
View History
Raw Materials for SILICA REAGENT NO 1
Downstream Products for SILICA REAGENT NO 1