Sodium Nitrite
Effective Food Preservation: Functions as a preservative in processed meat products such as salami, hot dogs, and bacon.
Diverse Synthetic Routes: Produced through multiple chemical synthesis pathways, ensuring consistent industrial supply.
Functional Similarity to Sodium Nitrate: Exhibits comparable preservative properties to sodium nitrate, broadening its applicability in food preservation.
Industrial-Scale Production: Efficiently manufactured via absorption of nitrogen oxides into sodium carbonate or sodium hydroxide solutions.
Sodium nitrite shares both nomenclature similarities and functional parallels with sodium nitrate, as both compounds serve as preservatives in processed meat products such as salami, hot dogs, and bacon. Industrially, sodium nitrite is synthesized through reduction reactions of sodium nitrate. The primary manufacturing method involves the absorption of nitrogen oxide gases into aqueous solutions of sodium carbonate or sodium hydroxide.
Parameters
Melting point | 271 °C (lit.) |
Boiling point | 320 °C |
bulk density | 1200kg/m3 |
density | 2.17g/cm3 |
vapor pressure | <0.0001 hPa ( 25 °C) |
refractive index | 1.65 |
storage temp. | 2-8°C |
solubility | aqueous acid: 1 - 2μl acetic acid per ml H2Osoluble |
form | |
Specific Gravity | 2.168 |
color | White or colorless |
Odor | Odorless |
PH | 9 (100g/l, H2O, 20℃) |
PH Range | 9 |
Water Solubility | 820 g/L (20 ºC) |
Sensitive | Hygroscopic |
Merck | 14,8648 |
Stability: | Stable. Incompatible with reducing agents, strong oxidizing agents, organics and other flammable materials, finely powdered metals. Contact with combustible material may lead to fire. Hygroscopic. |
InChIKey | LPXPTNMVRIOKMN-UHFFFAOYSA-M |
CAS DataBase Reference | 7632-00-0(CAS DataBase Reference) |
EPA Substance Registry System | Sodium nitrite (7632-00-0) |
Safety Information
Hazard Codes | O,T,N,Xn |
Risk Statements | 8-25-50-22-36/38 |
Safety Statements | 45-61-36-26 |
RIDADR | UN 3219 5.1/PG 3 |
WGK Germany | 3 |
RTECS | RA1225000 |
F | 10 |
Autoignition Temperature | 914 °F |
TSCA | Yes |
HazardClass | 5.1 |
PackingGroup | III |
HS Code | 28341000 |
Hazardous Substances Data | 7632-00-0(Hazardous Substances Data) |
Toxicity | LD50 orally in rats: 180 mg/kg (Smyth) |
Sodium nitrite, the sodium salt of nitrous acid, functions as an antimicrobial agent and preservative. It typically presents as a faintly yellowish crystalline powder or nearly white opaque masses or rod-like forms. The compound is hygroscopic, readily absorbing atmospheric moisture. With a solubility of approximately 1 gram per 1.5 milliliters of water, it is primarily employed in meat processing to stabilize color and enhance flavor development during curing.
