Potassium Nitrate Nitrite IP BP USP ACS AR Analytical Reagent FCC food Grade

详情

Potassium Nitrate is a powerful oxidizing agent (releases oxygen on heating) and is used in gunpowder and fertilizers.

Potassium Nitrate is used in the manufacture of various types of Glass, Explosive-Blasting powder, Slurry, Dynamics, Matches, Fertilizers, Heat Treatment & Heat transfer salts and Leather processing Industries. Major uses of potassium nitrate are in fertilizers, rocket propellants and fireworks. It is one of the constituents of gunpowder. When used as a food additive in the European Union, the compound is referred to as E**2.

POTASSIUM NITRATE

Specification of Potassium Nitrate:

Particulars ********- TECHNICAL GRADE **- PURE GRADE
Appearance *********- White crystalline - White crystalline powder
Assay (as KNO3) ****- *9.**0 % min *****- *9.*0 % min
K 2 O **************- *6.**0 % min *****- *6.**0 % min
Nitrogen ***********- *3.**0  % max ****- *3.**0 % min
Sulphate (as SO 4 ) - 0.**0 % max ******- 0.**5 % max
Chloride (as Cl) ***- 0.*5 % max *******- 0.**5 % max
Iron (as Fe) *******- 0.**2 % max ******- 0.**1 % max
Heavy Metal (as Pb) - 0.***3 % max *****- 0.***2 % max

Packing:

Potassium Nitrate is packed *0kg in HDPE laminated bags or as required by the buyer.

Uses:

Potassium is used in the manufacture of various types of Glass, Explosive-Blasting powder. Slurry, Dynamics, Matches, Fertilizers, Heat Treatment & Heat transfer salts and Leather processing Industries. Potassium nitrate is also one of the three components of black powder, along with powdered charcoal (substantially carbon) and sulfur, where it acts as an oxidizer. Potassium nitrate is an efficient oxidizer, which produces a lilac-colored flame upon burning due to the presence of potassium. It is therefore used in amateur rocket propellants and in several fireworks such as smoke bombs, made with a mixture of sucrose and potassium nitrate. It is also added to pre-rolled cigarettes to maintain an even burn of the tobacco. Potassium nitrate was used to ensure complete combustion of paper cartridges for cap and ball revolvers, as a treatment agent for the paper used to make the cartridges.

In the process of food preservation, potassium nitrate has been a common ingredient of salted meat since the Middle Ages.

Potassium nitrate is the main component (usually about *8%) of tree stump remover, as it accelerates the natural decomposition of the stump. It is also commonly used in the heat treatment of metals as a solvent in the post-wash. The oxidizing, water solubility and low cost make it an ideal short-term rust inhibitor.

Potassium nitrate can be found in some toothpastes for sensitive teeth. It successfully combats high blood pressure and was once used as a hypotensive.

Potassium Nitrate BP

KNO3 *- **1.1 *- ********1

DEFINITION
Potassium nitrate contains not less than *9.0 per cent and not more than the equivalent of **1.0 per cent of KNO3, calculated with reference to the dried substance.

CHARACTERS
A white, crystalline powder or colourless crystals, freely soluble in water, very soluble in boiling water, practically insoluble in alcohol.

IDENTIFICATION
A. It gives the reaction of nitrates.
B. Solution S (see Tests) gives the reactions of potassium.

TESTS
Solution S
Dissolve *0.0 g in carbon dioxide-free water prepared from distilled water and dilute to **0 ml with the same solvent.
Appearance of solution
Solution S is clear and colourless.
Acidity or alkalinity
To *0 ml of solution S add 0.*5 ml of bromothymol blue solution. Not more than 0.5 ml of 0.*1 M hydrochloric acid or 0.*1 M sodium hydroxide is required to change the colour of the indicator.
Reducible substances
To *0 ml of solution S, add 0.5 ml of dilute sulphuric acid and 2 ml of zinc iodide  and starch solution. The solution does not become blue within 2 min.
Chlorides
If intended for ophthalmic use, it complies with the test for chlorides. Dissolve 2.5 g in water and dilute to *5 ml with the same solvent. The solution complies with the limit test for chlorides (*0 ppm).
Sulphates
Dilute *0 ml of solution S to *5 ml with distilled water. The solution complies with the limit test for sulphates (**0 ppm).
Ammonium
1 ml of solution S complies with the limit test (A) for ammonium (**0 ppm). If intended for ophthalmic use, not more than *0 ppm of ammonium.
Calcium
Dilute *0 ml of solution S to *5 ml with distilled water. The solution complies with the limit test for calcium (**0 ppm). If intended for ophthalmic use, not more than *0 ppm of calcium.
Iron
Dilute 5 ml of solution S to *0 ml with water. The solution complies with the limit test for iron (*0 ppm). If intended for ophthalmic use, not more than *0 ppm of iron.
Sodium
Not more than 0.1 per cent of Na, determined by atomic emission spectrometry.
Heavy metals
*2 ml of solution S complies with limit test A for heavy metals (*0 ppm).
Loss on drying
Not more than 0.5 per cent determined on 1.**0 g by drying in an oven at **0°C to **5°C.

Potassium Nitrate USP

Potassium Nitrate
KNO3 **1.*0
Potassium nitrate.
Potassium nitrate [********1].

Potassium Nitrate contains not less than *9.0 percent and not more than **0.5 percent of KNO3.

Identification— A solution of it responds to the tests for Potassium and for Nitrate.
Chloride— A ***-mg portion of it shows no more chloride than corresponds to 0.*1 mL of 0.**0 N hydrochloric acid (0.*3%).
Sulfate— Dissolve **0 mg of Potassium Nitrate in *0 mL of water, add *5 mL of 6 N hydrochloric acid, and evaporate to dryness on a steam bath. To the residue so obtained add 7 mL of 6 N hydrochloric acid, and evaporate to dryness on a steam bath. Dissolve the residue so obtained in about *5 mL of water and, if necessary, neutralize with hydrochloric acid using litmus paper indicator. Filter, if necessary, to obtain a clear test solution. This test solution shows no more sulfate than corresponds to 0.*0 mL of 0.**0 N sulfuric acid (0.1%).
Arsenic: 3 ppm.
Lead— A solution of 0.5 g of it in *0 mL of water contains not more than 5 4g of lead (corresponding to not more than 0.**1% of Pb).
Heavy metals: 0.**2%.
Iron: not more than 0.**1%.
Limit of sodium— the limit is 0.1%.
Limit of nitrite— To pass the test.

Potassium Nitrate FCC Food Grade

KNO3 Formula wt **1.*0
INS: **2 CAS: [********1]

DESCRIPTION
Potassium Nitrate occurs as colorless, transparent prisms, as white granules, or as a white, crystalline powder. It is slightly hygroscopic in moist air. One gram dissolves in 3 mL of water at *5°, in 0.5 mL of boiling water, and in about **0 mL of alcohol. Its solutions are neutral to litmus.
Function: Antimicrobial agent; preservative.

REQUIREMENTS
Identification: A 1:*0 aqueous solution gives positive tests for Potassium and Nitrate.
Assay: Not less than *9.0% and not more than **0.5% of KNO3 after drying.
Chlorate: Sprinkle about **0 mg of dry sample on 1 mL of sulfuric acid. The mixture does not turn yellow.
Lead: Not more than 4 mg/kg.
Loss on Drying: Not more than 1%.

ACS Specifications
American Chemical Society

Potassium Nitrate ACS Analytical Reagent

KNO3
Formula Wt **1.*0
CAS Number ********1

REQUIREMENTS
Assay: *9.0% KNO3
pH of a 5% solution: 4.**8.5 at *5C

MAXIMUM ALLOWABLE
Insoluble matter ........... 0.**5%
Chloride (Cl) ............... 0.**2%
Iodate (IO3) ............... 5 ppm
Nitrite (NO2) .............. 0.**1%
Phosphate (PO4) ........ 5 ppm
Sulfate (SO4) .............. 0.**3%
Heavy metals (as Pb) ... 5 ppm
Iron (Fe) ..................... 3 ppm
Calcium (Ca) ............... 0.**5%
Magnesium (Mg) ......... 0.**2%
Sodium (Na) ............... 0.**5%

POTASSIUM NITRITE

Specification of Potassium Nitrite:

CAS No.: ********0
Formula: KNO2
Appearance: White to Yellowish
Solubility (*0% in Water): Clear and Bright
Chloride: 0.**5% Max.
Sodium: 0.*5%
Assay: *6% and also *8%
Packing: *5 Kg Drum