Sodium metasilicate nonahydrate
Sodium metasilicate nonahydrate
CAS: 13517-24-3
Molecular Formula: H18Na2O12Si
Sodium metasilicate nonahydrate - Names and Identifiers
| Name | Sodium metasilicate nonahydrate |
| Synonyms | SODIUM M-SILICATE, HYDROUS SODIUM META-SILICATE 9 HYD Sodium metasilicate nonahydrate SODIUM META-SILICATE, 9-HYDRATE SODIUM METASILICATE NONAHYDRATE Sodium metasilicate, nonahydrate SODIUM SILICATE, META NONAHYDRATE DISODIUM TRIOXOSILICATE, NONAHYDRATE Silicicacid(H2SiO3)disodiumsaltnonahydrate SODIUM META SILICATE, NONAHYDRATE, REAGENTSODIUM META SILICATE, NONAHYDRATE, REAGENTSODIUM META SILICATE, NONAHYDRATE, REAGENTSODIUM META SILICATE, NONAHYDRATE, REAGENT |
| CAS | 13517-24-3 |
| EINECS | 603-903-3 |
| InChI | InChI=1/Na.O3Si.9H2O/c;1-4(2)3;;;;;;;;;/h;;9*1H2/q+1;-2;;;;;;;; |
| InChIKey | PHIQPXBZDGYJOG-UHFFFAOYSA-N |
Sodium metasilicate nonahydrate - Physico-chemical Properties
| Molecular Formula | H18Na2O12Si |
| Molar Mass | 284.2 |
| Density | 2.61 |
| Melting Point | 72.2℃ [OXY93] |
| Water Solubility | parts/100 parts solution in H2O: 27.5 (20°C), 44.5 (35°C), 62.8 (45°C), 80.9 (55°C), 84.0 (60°C), 91.2 (70°C) [OXY93] |
| Solubility | H2O: soluble(lit.) |
| Appearance | Solid |
| Color | White |
| Stability | Stable. |
| Physical and Chemical Properties | Density: 2.61 |
Sodium metasilicate nonahydrate - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | R34 - Causes burns R37 - Irritating to the respiratory system |
| Safety Description | S13 - Keep away from food, drink and animal foodstuffs. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S24/25 - Avoid contact with skin and eyes. |
| UN IDs | UN 3253 8/PG 3 |
| WGK Germany | 1 |
| HS Code | 28391100 |
| Hazard Class | 8 |
| Packing Group | III |
Sodium metasilicate nonahydrate - Nature
Open Data Verified Data
White Square crystal. The relative density of 0.7~0.9. The melting point was 40-48 °c. Soluble in water and dilute alkali, insoluble in alcohol and acid. The aqueous solution is alkaline. It is easy to absorb moisture in the open air. With decontamination, emulsification, dispersion, wetting, permeability and pH buffer capacity. The concentrated solution has corrosive effect on fabric and skin.
Last Update：2024-01-02 23:10:35
Sodium metasilicate nonahydrate - Preparation Method
Open Data Verified Data
synthesis: see sodium metasilicate pentahydrate.
Last Update：2022-01-01 11:03:45
Sodium metasilicate nonahydrate - Use
Open Data Verified Data
see sodium metasilicate pentahydrate.
Last Update：2022-01-01 11:03:45
Sodium metasilicate nonahydrate - Safety
Open Data Verified Data
packaging see sodium metasilicate pentahydrate. The ambient temperature during storage and transportation should be lower than 40 ℃. Should be stored in a cool, ventilated, dry warehouse. Prevent moisture, rain and sun exposure.
Last Update：2022-01-01 11:03:45
Sodium metasilicate nonahydrate - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | sodium metasilicate nonhydrate is a non-toxic, tasteless, pollution-free white crystalline powder, the molecular formula is Na2SiO3 • 9H2O, nine Sodium metasilicate with strong alkaline, soluble in water and dilute alkali solution, insoluble in alcohol and acid, open air, hygroscopic deliquescence. It has strong alkalinity, strong detergency and large buffering capacity, can neutralize acidic dirt, emulsify fat and oil, has anti-flocculation effect on inorganic substances, and has anti-corrosion effect on metals, it is an irreplaceable raw material in the washing industry, which can replace sodium tripolyphosphate in the synthesis of high-efficiency detergents and metal cleaning agents to reduce the pollution of sodium tripolyphosphate to the environment. It is widely used in household washing powder, industrial detergents, food cleaning agents, metal cleaning agents, wine bottle cleaning agent, degreasing textile printing and dyeing auxiliary and paper deinking agent, etc., more concentrated solution has corrosive effect on fabric and skin. At present, there is only nine sodium metasilicate on the market in China, this product is an emergency product with low technical content, which is urgently needed in the 80 s of the last century. Because its melting point is only 42 ℃, at 30~40 ℃, it will release the crystal water, which will bring inconvenience to the use. It is easy to become liquid or paste during storage, and it is being gradually eliminated. However, due to some user habits and some fields, the crystal water is not very concerned, sodium metasilicate nine water or a certain market. |
| Use | see sodium metasilicate pentahydrate. It is mainly used as a highly effective additive in washing powder, metal cleaning agent and dishwashing. For cotton yarn cooking. Also used for old paper to ink, printing decontamination, vegetable oil recovery. And can be used as a stabilizer for peroxide bleaching. Analytical reagents. Fabric fire retardant. Adhesive. Binding agent, hardener, weighting agent, fire retardant, filler, haploid breeding in the preparation of trace elements in the sand medium, ore flotation agent, petroleum refining. |
| production method | synthesis method the water glass solid is dissolved at high temperature and high pressure, reacted with caustic soda, crystallized and separated, the wet cake was dried to give the product. The separated mother liquor can be processed back to the synthesis process of the process. Na2O? mSiO2 (4m 1)H2O 2(m-1)NaOH→m[Na2SiO3? 5H2O] synthesis see sodium metasilicate pentahydrate. Na2O? mSiO2 (8m 1)H20 2(m-1)NaOH→m[Na2SiO3? 9H2O] |
Last Update：2024-05-06 11:41:20
