| Customization: | Available |
|---|---|
| CAS No.: | 6131-90-4 |
| Formula: | C2h9nao5 |
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Sodium acetate trihydrate is the trihydrate sodium salt of acetic acid. It occurs as colorless, transparent crystals or as a granular, crystalline or white powder.
Physical Properties:
| Molecular Weight | 136.08 |
| Density | 1.45g/cm3 |
| Melting Point | 58 ºC |
| Water Solubility | Soluble |
| pH | 8.0-9.5 |
Specification:
| Test Item | Unit | The Standard |
| Appearance | - | White crystalline odorless powder |
| Assay (Dry base) | % | 99.0-101.0 |
| PH(1%solution) | - | 8.0~9.5 |
| Alkalinity(as NaOH) | % | 0.2 Max. |
| Loss on Drying | % | 36.0-42.0 |
| Heavy Metals(as Pb) | % | 0.001Max. |
| Arsenic(As) | % | 0.0003 Max. |
| Iron(Fe) | % | 0.0005Max. |
Sodium acetate trihydrate is used in various applications. It is used as a buffer of a pH range in between to 4.0 to 6.0. It is also used in the purification and precipitation of nucleic acids and in protein crystallization. It is used as a mordant dyeing, as a pickling agent in chrome tanning, as a neutralizer in waste streams containing sulfuric acid, in the textile industry and as a photoresist while using aniline dyes. It plays an important role to retard vulcanization of chloroprene in synthetic rubber production. It is a precursor to prepare ester from alkyl halide. Sodium acetate trihydrate is also used in heating pads, hand warmers, and hot ice. A supersaturated solution of sodium acetate in water is supplied with a device to initiate crystallization, a process that release substantial heat. Other applications are in photography, as an additive to food, in purification of glucose, in preservation of meat, in tanning, and as a dehydrating agent. In analytical chemistry it is used to prepare buffer solution.
Sodium acetate trihydrate is widely used in cosmetics, foods and pharmaceutical formulations, and is generally regarded as a nontoxic and nonirritant material.
Store in cool and ventilated place.
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