CAS number | 127-09-3 (Anhydrous), 6131-90-4 (Trihydrate) |
Chemical formula | C2H3NaO2.nH2O (n = 0 or 3) |
Molecular weight | 82.03 (Anhydrous), 136.08 (Trihydrate) |
PH | It is weak alkali with the PH value 8.0-9.5 (1 % aqueous solution) |
PKa | 4.75 |
PKb | 9.25 |
Melting point | 58 °C (Trihydrate) |
Solubility | Very soluble in water 20°C, solubility: 46.5g/100ml (trihydrate), 50g/100ml (anhydrous ).
Soluble in ethanol. |
Sodium Acetate E262,CAS no.127-09-3, is a sodium salt of acetic acid, available as white powder. Sodium Acetate Anhydrous is widely used as preservative and flavor enhancer in food processing. Sodium acetate may be added to food as a seasoning, sometimes in the form of sodium diacetate, a one-to-one complex of sodium acetate and acetic acid.
Sodium Acetate Trihydrate, E262, CAS no.6131-90-4, sodium salt of acetic acid, available as white to colourless crystals. Sodium Acetate Trihydrate is common form of Sodium Acetate. With similar function to Sodium Acetate Anhydrous, Sodium Acetate Trihydrate is also widely used as preservatives. More over, Sodium Acetate Trihydrate is an important intermediate in manufacturing of Sodium Diacetate
ITEM | STANDARD |
Appearance | White, odorless, hygroscopic powder |
Assay (Dry Basis, %) | 99.0-101.0 |
pH (1% Solution, 25ºC) | 8.0- 9.5 |
Loss on Drying (120ºC, 4 Hours, %) | ≤ 1.0 |
Insoluble Matter (%) | ≤ 0.05 |
Alkalinity (as NaOH, %) | ≤ 0.2 |
Chlorides (Cl, %) | ≤ 0.035 |
Formic acid, formates and other oxidizable (as formic acid) | ≤ 1,000 mg/kg |
Phosphate (PO4) | ≤ 10 mg/ kg |
Sulphate (SO4) | ≤ 50 mg/ kg |
Iron (Fe) | ≤ 10 mg/ kg |
Arsenic (As) | ≤ 3 mg/ kg |
Lead (Pb) | ≤ 5 mg/ kg |
Mercury | ≤ 1 mg/ kg |
Heavy Metal (as Pb) | ≤ 10 mg/ kg |
Potassium Salt (%) | ≤ 0.025 |
ITEM | STANDARD |
Appearance | Colorless crystals, slight acetic acid odor |
Assay (dry basis, %) | 99.0-101.0 |
pH (5% Solution, 25ºC) | 7.5- 9.0 |
Loss on Drying (120ºC, 4h, %) | 36.0 - 41.0 |
Insoluble Matter (%) | ≤ 0.05 |
Chlorides (Cl, %) | ≤ 0.035 |
Alkalinity (as Na2CO3, %) | ≤ 0.05 |
Phosphate (PO4) | ≤ 10 mg/kg |
Sulphate (SO4) | ≤ 50 mg/kg |
Iron (Fe) | ≤ 10 mg/kg |
Arsenic (As) | ≤ 3 mg/kg |
Lead (Pb) | ≤ 5 mg/kg |
Mercury (Hg) | ≤ 1 mg/kg |
Heavy Metal (as Pb) | ≤ 10 mg/kg |
Uses of Sodium Acetate
Sodium acetate is a multifunctional ingredient that can be used in food, medicine, DNA isolation, printing and dyeing, photography, electroplating, tanning, rubber, and etc.
There are general three purposes of sodium acetate in food:
OUR other Food Preservative
SORBIC ACID | ||
BENZOIC ACID | ||
SODIUM ACETATE | ||
CALCIUM ACETATE | ||
SODIUM BENZOATE | ||
BENZOATE ZINC | ||
POTASSIUM SORBATE | ||
CALCIUM PROPIONAE | ||
POTASSIUM ACETATE | ||
SODIUM PROPIONATE | ||
SODIUM ACID PYROPHOSPHATE | ||
AMMONIUM BICARBONATE | ||
SODIUM ERYTHORBATE | ||
SODIUM BICARBONATE | ||
GDL (GLUCONOLACTONE) |
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