Sodium Acetate CAS#127-09-3
Sodium acetate (CH₃COONa), the sodium salt derived from acetic acid, occurs as a colorless crystalline solid with deliquescent properties. This multi-purpose chemical enjoys extensive adoption in industrial, laboratory and commercial fields.
Within the textile sector, sodium acetate neutralizes waste effluents containing sulfuric acid, and may function as a photoresist alongside aniline dyes. In construction, it acts as a concrete sealing agent to alleviate water-caused degradation. For food production, it is frequently incorporated as a flavoring additive.
It also works as a prevalent buffering reagent for laboratory experiments. Thanks to its thermal storage characteristics, sodium acetate constitutes a key ingredient in heating pads, hand warmers and hot ice products.
On a lab scale, sodium acetate can be synthesized by letting acetic acid react with sodium carbonate, sodium bicarbonate or sodium hydroxide. For mass industrial production, it is generally obtained from the reaction between glacial acetic acid and sodium hydroxide.
Sodium acetate Chemical Properties
Melting point | >300 °C (dec.)(lit.) |
density | 1.01 g/mL at 20 °C |
FEMA | 3024 | SODIUM ACETATE |
refractive index | 1.464 |
Fp | >250 °C |
storage temp. | Store at +5°C to +30°C. |
solubility | H2O: 3 M at 20 °C, clear, colorless |
pka | 4.756[at 20 ℃] |
form | powder |
color | white |
Specific Gravity | 1.45 |
Odor | Slight acetic acid |
PH | 7.87(1 mM solution);8.33(10 mM solution);8.75(100 mM solution);9.04(1000 mM solution) |
PH Range | 8.5 - 9.9 at 246 g/l at 25 °C |
Odor Type | odorless |
biological source | synthetic |
Water Solubility | 500 g/L (20 ºC) |
λmax | λ: 260 nm Amax: 0.03 |
λ: 280 nm Amax: 0.02 | |
Sensitive | Hygroscopic |
Hydrolytic Sensitivity | 0: forms stable aqueous solutions |
Merck | 148571 |
Boiling point | >400°C(decomposition) |
BRN | 3595639 |
Stability: | Stable. Incompatible with strong oxidizing agents, halogens. Moisture sensitive. |
Cosmetics Ingredients Functions | BUFFERING |
FRAGRANCE | |
InChI | 1S/C2H4O2.Na/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1 |
InChIKey | VMHLLURERBWHNL-UHFFFAOYSA-M |
SMILES | [Na+].CC([O-])=O |
LogP | -3.72 |
CAS DataBase Reference | 127-09-3(CAS DataBase Reference) |
NIST Chemistry Reference | Sodium ethanoate(127-09-3) |
EPA Substance Registry System | Sodium acetate (127-09-3) |
Absorption | ≤0.01 at 260nm in H2O at 100mM |
≤0.01 at 280nm in H2O at 100mM |
Safety Information
Safety Statements | 22-24/25 |
WGK Germany | 1 |
RTECS | AJ4300010 |
F | 3 |
Autoignition Temperature | 607 °C |
TSCA | TSCA listed |
HS Code | 29152200 |
Storage Class | 11 - Combustible Solids |
Hazardous Substances Data | 127-09-3(Hazardous Substances Data) |
Toxicity | LD50 orally in Rabbit: 3530 mg/kg LD50 dermal Rabbit > 10000 mg/kg |
Product Application of Sodium Acetate CAS#127-09-3
Sodium acetate is extensively applied as a dyeing mordant. It also sees use in photography, food additive formulation, glucose refining, meat preservation, leather tanning, and as a dehydrating agent. Within analytical chemistry, it is routinely employed for preparing buffer solutions.
In the food sector, sodium acetate functions as a preservative for processed meat items. It is often blended with other acidic preservatives including lactates and propionates to boost preservative efficacy, with a typical dosage between 0.2% and 0.5%. Moreover, sodium acetate is a common ingredient in salad dressings and convenience ready-to-eat foods.
