Nomenclature
CAS number: 7632-00-0
Nitrous acid sodium salt (1:1); erinitrit.
NNaO
2; mol wt 69.00.
N 20.30%, Na 33.32%, O 46.38%.
Description and references
Contains 96-98% NaNO2. Thermodynamic
properties: Plekhotkun, Zh. Prikl. Khim. 40, 1843 (1967), C.A. 68, 33797x (1968). Toxicity studies: Faccini et
al., Ind. Aliment. (Pinerolo, Italy) 8, 77 (1969), C.A. 71, 100583b (1969); H. F. Smyth et al., Am. Ind. Hyg. Assoc. J. 30, 470
(1969). Review of chemistry of NaNO2 in a biological system
as related to meat curing: Bard, Townsend, Science of Meat &
Meat Products, J. F. Price, B. S. Schweigert, Eds. (W. H. Freeman,
2nd ed. 1971) pp 452-470.
Properties
White or slightly yellow, hygroscopic granules,
rods, or powder. Oxidizer; poisonous. Very slowly oxidizes to nitrate in air. d 2.17. mp 271°; dec above 320°. Sol in 1.5 parts cold water, 0.6
part boiling water, slightly in alc. Dec even by weak acids with
evolution of brown fumes of N2O3. The aq soln
is alkaline. pH ≈9. Keep well closed. LD50 orally in rats: 180 mg/kg (Smyth). Incompat: Acetanilide, antipyrine, chlorates,
hypophosphites, iodides, mercury salts, permanganate, sulfites, tannic
acid, vegetable astringent decoctions, infusions or tinctures.Caution
Consult latest government regulation
to determine max amounts allowable in food.Use
Manuf diazo dyes, nitroso compds, and in many other
processes of manuf of organic chemicals; dyeing and printing textile
fabrics; bleaching flax, silk, and linen; photography. In meat curing,
coloring and preserving; in processing smoked chub. Reducing agent
in analytical chemistry.
Therapeutic Category
Vasodilator; antidote (cyanide poisoning).
Therapeutic Category (Veterinary)
Antidote (cyanide poisoning). Has been
used as a vasodilator, as a circulatory (blood pressure) depressant
and to relieve smooth muscle spasm.
Keywords
Antidote (Cyanide)