Sodium Nitrite CAS#7632-00-0
Effective preservative — Widely used to preserve processed meats like salami, hot dogs, and bacon.
Versatile production methods — Manufactured through multiple chemical reactions, ensuring stable supply.
Closely related to sodium nitrate — Shares similar functions, enhancing its applicability in food preservation.
Industrial scalability — Produced efficiently by absorbing nitrogen oxides into sodium carbonate or sodium hydroxide solutions.
Sodium nitrite is closely related to sodium nitrate in both name and function. Both compounds are used as preservatives in processed meats, including salami, hot dogs, and bacon. Sodium nitrite is produced through various chemical reactions that reduce sodium nitrate. The industrial production of sodium nitrite mainly involves the absorption of nitrogen oxides into aqueous 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 is the salt of nitrous acid, acting as an antimicrobial agent and preservative. It appears as a slightly yellow granular powder or a nearly white, opaque mass or sticks. It is hygroscopic and absorbs moisture from the air. With a solubility of 1 g in 1.5 ml of water, it is commonly used in meat curing to fix color and develop flavor. See nitrite.
