Name | Acetic acid,sodium salt trihydrate |
Synonyms | Sodium acetate trihydate Sodium acetate,trihydrate Sodium acetate trihydrate Sodium Acetate, Trihydrate Acetic acid,sodium salt trihydrate Acetic acid sodium salt trihydrate |
CAS | 6131-90-4 |
EINECS | 204-814-9 |
InChI | InChI=1/C2H4O2.Na.3H2O/c1-2(3)4;;;;/h1H3,(H,3,4);;3*1H2/q;+1;;;/p-1 |
InChIKey | AYRVGWHSXIMRAB-UHFFFAOYSA-M |
Molecular Formula | C2H3O2Na·3(H2O) |
Molar Mass | 136.08 |
Density | 1,45 g/cm3 |
Melting Point | 58℃ |
Boling Point | >400°C |
Water Solubility | 762 g/L (20℃) |
Appearance | Shape Solid Color White tranparent Slight acid |
Stability | Stable. Incompatible with strong oxidizing agents, halogens. |
Physical and Chemical Properties | Properties: This product is colorless or white crystals relative density 1.528g/cm3 melting point 58°C water-soluble: 762g/L (20°C), soluble in water and ether, slightly soluble in ethanol |
Use | Used in printing and dyeing, pharmaceutical, photography, electroplating, also used as esterifying agent, preservative. it is suitable for the manufacture of medicines, dyes and photographic agents, and is also a main raw material for the manufacture of sodium diacetate. |
Safety Description | S24/25 - Avoid contact with skin and eyes. |
WGK Germany | 1 |
Toxicity | LD50 orally in Rabbit: 3530 mg/kg LD50 dermal Rabbit > 10000 mg/kg |
This product is commonly used after the reaction of crystalline sodium carbonate and acetic acid, filtration, evaporation, cooling, crystallization, drying at room temperature and made. The content of sodium acetate (CzH3Na02) shall not be less than 99.0% calculated as dry product.
take an appropriate amount of this product, add water to dissolve and dilute it into a solution containing 30mg of anhydrous sodium acetate per lml, and measure it according to law (General rule 0631). The pH value should be 7.5~9.2.
take an appropriate amount of this product (equivalent to anhydrous sodium acetate 0.2g), check according to law (General rule 0801 ) , and standard gasification sodium solution 7. Compared with the control solution made of Om, it should not be more concentrated (0.035%).
take an appropriate amount of this product (equivalent to 10g of anhydrous sodium acetate) and check it according to law (General rule 0802). Compared with the control solution made of 5.0 ml of standard potassium sulfate solution, it should not be more concentrated (0.005%).
take an appropriate amount of this product (equivalent to 20g of anhydrous sodium acetate), add 150ml of water, boil and place it on a water bath for 1 hour, then pour the vertical melting crucible No. 3 which is dried to constant weight at 105°C, filter, wash the filter and the residue with water for 3 times, and dry to constant weight at 105°C. 05).
take this product, dry to constant weight at 120°C, weight loss should be 38.0% ~ 41.0%, such as anhydrous sodium acetate, weight loss should not exceed 1.0% (General 0831).
take an appropriate amount of this product (equivalent to 0.2g of anhydrous sodium acetate), add 20ml of water to dissolve, add 2ml of 6mol/L ammonium hydroxide solution, 2ml of ammonium oxalate test solution and 2ml of 12% disodium hydrogen phosphate solution, haze should not occur within 5 minutes.
take an appropriate amount of this product (equivalent to anhydrous sodium acetate 3.og), add 5ml of water to dissolve, add 0.4ml of newly prepared 5% sodium hydrogen tartrate solution, and the turbidity shall not occur within 5 minutes.
take an appropriate amount of this product (equivalent to anhydrous sodium acetate l. (Og), add 25ml of water to dissolve, and check according to law (General rule 0807). Compared with the control solution made of 0.001% of standard iron solution, it should not be deeper ().
take an appropriate amount of this product (equivalent to 2.0g of anhydrous sodium acetate), add 23ml of water to dissolve, add 2ml of dilute acetic acid, and check according to law (General rule 0821 first law), containing no more than 10 parts per million of heavy metals.
take an appropriate amount of this product (equivalent to 0.7g of anhydrous sodium acetate), add 25ml of water to dissolve, add 5ml of hydrochloric acid, and check according to law (the first law of the general rule 0822), should comply with the provisions (0.0003%).
take the product dried at 120°C to constant weight of about 60mg, precision weighing, add glacial acetic acid 25mr dissolution, add crystal violet indicator solution 2 drops, with perchloric acid titration solution (0.1 mol/L) titration to a blue color of the solution, and the results of the titration were corrected by a blank test. Each 1 ml of perchloric acid titration solution (0.1 mol/L) corresponds to 8.203mg of C2FhNaCh.
pharmaceutical excipients, pH regulators and buffers.
sealed, stored in a cool and dry place.