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Sodium Nitrite BP USP IP ACS Analytical Reagent FCC Food grade Manufacturers
For MSDS Sheet Click MSDS of Sodium Nitrite IP BP USP FCC ACS Food Grade Manufacturers
Sodium Nitrite BP Pharmacopoeia
NaNO2
Action and use
Used in treatment of cyanide poisoning.
DEFINITION
Content
98.5 per cent to 100.5 per cent (dried substance).
CHARACTERS
Appearance
Colourless crystals or mass or yellowish rods,
hygroscopic.
Solubility
Freely soluble in water, soluble in alcohol.
IDENTIFICATION
A. Dilute 1 ml of solution S1 (see Tests) to 25 ml with
water R. To 0.1 ml of the solution add 1 ml of sulphanilic acid
solution. Allow to stand for 2-3 min. Add 1 ml of b-naphthol solution and 1 ml of dilute sodium hydroxide solution R. An intense red
colour develops.
B. To 1 ml of the solution prepared for identification
test A add 3 ml of a 20 g/l solution of phenazone and 0.4 ml of dilute sulphuric acid. An intense green colour develops.
C. To 0.15 ml of solution S1, add 0.35 ml of
water R.
The solution gives reaction of sodium.
TESTS
Solution S1
Dissolve 2.5 g in carbon dioxide-free water
and
dilute to 50 ml with the same solvent.
Solution S2
Dissolve 3 g in distilled water. Cautiously add
10 ml of nitric acid and evaporate to dryness. Dissolve the residue
in 10 ml of distilled water R, neutralize with dilute sodium
hydroxide solution and dilute to 30 ml with distilled water.
Appearance of solution
Solution S1 is clear and not more intensely coloured
than reference solution.
Acidity or alkalinity
To 10 ml of solution S1, add 0.05 ml of
phenol red
solution. Add 0.1 ml of 0.01 M sodium hydroxide. The solution is
red. Add 0.3 ml of 0.01 M hydrochloric acid. The solution is yellow.
Chlorides
Maximum 50 ppm.
Dilute 10 ml of solution S2 to 15 ml with
water.
The solution complies with the limit test for chlorides.
Sulphate
Maximum 200 ppm.
Heavy metals
Maximum 20 ppm.
Loss on drying
Maximum 1.0 per cent, determined on 1.000 g by drying
in vacuum.
Sodium Nitrite USP
NaNO2 69.00
Nitrous acid, sodium salt.
Sodium nitrite [7632-00-0]
Sodium Nitrite contains not less than 97.0 percent and not more than 101.0 percent of NaNO2, calculated on the dried basis.
Identification— A solution of it responds to the tests for Sodium and for Nitrite.
Loss on drying— Dry it over silica gel for 4 hours: it loses not more than 0.25% of its
weight.
Heavy metals— Dissolve 1 g in 6 mL of 3 N hydrochloric acid, and evaporate on a steam
bath to dryness. Reduce the residue to a coarse powder, and continue heating
on the steam bath until the odor of hydrochloric acid no longer is
perceptible. Dissolve the residue in 23 mL of water, and add 2 mL of 1 N
acetic acid: the limit is 0.002%.
Assay— Dissolve about 1 g of Sodium Nitrite, accurately weighed, in water to make
100.0 mL. Pipette 10 mL of this solution into a mixture of 50.0 mL of 0.1 N
potassium permanganate VS, 100 mL of water, and 5 mL of sulfuric acid. When
adding the Sodium Nitrite solution, immerse the tip of the pipette beneath the
surface of the permanganate mixture. Warm the liquid to 40 , allow it to
stand for 5 minutes, and add 25.0 mL of 0.1 N oxalic acid VS. Heat the
mixture to about 80 , and titrate with 0.1 N potassium permanganate VS. Each
mL of 0.1 N potassium permanganate is equivalent to 3.450 mg of NaNO2.
Sodium Nitrite FCC
NaNO2 Formula wt 69.00
INS: 250 CAS: [7632-00-0]
DESCRIPTION
Sodium Nitrite occurs as a white to slightly yellow,
granular powder, or as white or nearly white, opaque, fused masses or
sticks. It is hygroscopic in air. Its solutions are alkaline to litmus. One
gram dissolves in 1.5 mL of water, but it is sparingly soluble in alcohol.
Function: Color
fixative in meat and meat products; antimicrobial agent; preservative.
REQUIREMENTS
Identification: An aqueous solution gives positive tests for Sodium
and for Nitrite.
Assay: Not less
than 97.0% and not more than 100.5% of NaNO2 after drying.
Lead: Not more
than 4 mg/kg.
Loss on Drying: Not more than 0.25%.
Sodium Nitrite ACS
Reagent Chemicals
ACS Specifications
Sodium Nitrite
NaNO2
Formula Wt 69.00
CAS
Number 7632-00-0
REQUIREMENTS
Assay: 97.0%
NaNO2 min
MAXIMUM ALLOWABLE
Insoluble matter: 0.01%
Chloride (Cl): 0.005%
Sulfate (SO4): 0.01%
Calcium (Ca): 0.01%
Potassium (K): 0.005%
Heavy metals (as Pb): 0.001%
Iron (Fe): 0.001%
Sodium Nitrite BP IP USP ACS Analytical Reagent FCC Food grade nufacturers at:
MUBY CHEMICALS GROUP
DONGRI-CHINCHBUNDER, MUMBAI 400009, INDIA
TEL: (OFFICE)
91-22-23770100, 91-22-23726950, 91-22-23774610, 23723564.
e-mail: info@mubychem.com
