Description Reference
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POTASSIUM NITRITE

Description Reference
Product Name
POTASSIUM NITRITE
CAS No.
7758-09-0
Chemical Name
POTASSIUM NITRITE
Synonyms
Kaliumnitrit;NPotassiuM nitri;POTASSIUM NITRITE;PotassiumNitriteFcc;Potassium nitrite,AR;potassiumnitrite(1:1);POTASSIUM NITRITE XTL;POTASSIUM NITRITE, ACS;Nitrous acid potassium;POTASSIUM NITRITE, 97+%
CBNumber
CB8694434
Molecular Formula
KNO2
Formula Weight
85.1038
MOL File
7758-09-0.mol
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POTASSIUM NITRITE Property

Melting point:
350 °C (dec.)(lit.)
Boiling point:
explodes at 537℃ [HAW93]
Density 
1,92 g/cm3
vapor density 
2.9 (vs air)
storage temp. 
Store at +5°C to +30°C.
solubility 
water: soluble0.35 part
form 
Solid
color 
White to slightly yellow
Specific Gravity
1.915
Odor
Odorless
PH Range
7 - 10
PH
7-10 (50g/l, H2O, 20℃)
Water Solubility 
Soluble in water, hot alcohol, liquid NH{3}Soluble in water, alcohol and ammonia.
Sensitive 
Hygroscopic
Merck 
14,7649
Stability:
Stability Stable, but strong oxidizer - contact with combustible material may lead to fire. Incompatible with strong reducing agents, strong acids, combustible materials, cyanides, ammonium salts.
CAS DataBase Reference
7758-09-0(CAS DataBase Reference)
EPA Substance Registry System
Potassium nitrite (7758-09-0)
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Safety

Hazard Codes 
O,T,N
Risk Statements 
8-25-50
Safety Statements 
45-61
RIDADR 
UN 1488 5.1/PG 2
WGK Germany 
2
RTECS 
TT3750000
TSCA 
Yes
HS Code 
2834 10 00
HazardClass 
5.1
PackingGroup 
II
Hazardous Substances Data
7758-09-0(Hazardous Substances Data)
Toxicity
LD50 orally in rabbits: 108 mg anion/kg, Dollahite, Rowe, Southwest. Vet. 27, 246 (1974)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H272May intensify fire; oxidizer

H301Toxic if swalloed

H319Causes serious eye irritation

H400Very toxic to aquatic life

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P220Keep/Store away from clothing/…/combustible materials.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P273Avoid release to the environment.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
12654
Product name
Potassium nitrite
Purity
meets analytical specification of FCC, 97-100.5%
Packaging
1kg
Price
$217
Updated
2024/03/01
Sigma-Aldrich
Product number
1.05067
Product name
Potassium nitrite
Purity
cryst. for analysis EMSURE? ACS
Packaging
250g
Price
$79.3
Updated
2024/03/01
Sigma-Aldrich
Product number
12654
Product name
Potassium nitrite
Purity
meets analytical specification of FCC, 97-100.5%
Packaging
2.5kg
Price
$445
Updated
2023/06/20
Alfa Aesar
Product number
014245
Product name
Potassium nitrite, ACS, 96.0% min
Packaging
10g
Price
$25.2
Updated
2023/06/20
Alfa Aesar
Product number
014245
Product name
Potassium nitrite, ACS, 96.0% min
Packaging
100g
Price
$70.9
Updated
2023/06/20
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POTASSIUM NITRITE Chemical Properties,Usage,Production

Description

Potassium is the nitrite salt of potassium, appearing as a yellowish white crystalline solid. As a strong oxidizer, it may promote combustion and even explosion of other materials. In medical field, it is used for the treatment of angina pectoris. It is also applied during the manufacturing of heat transfer salts. Moreover, it is also a kind of food additive as a preservative. In addition, it can also be used as a paint and coating additive, analytic agents, corrosion inhibitors and anti-scaling agent. In chemical industry, it has the following applications: Manufacture Of Pigment Yellow 40, cinitapride and many other drugs, butadiene distillation, production of D-saccharic acid, dissolution of tungston, recovery of bromine and separation of cobalt from cobalt nickel solutions.

Reference

  1. https://pubchem.ncbi.nlm.nih.gov/compound/potassium_nitrite#section=InChI-Key
  2. https://en.wikipedia.org/wiki/Potassium_nitrite
  3. https://www.alfa.com/zh-cn/catalog/L13289/
  4. http://www.bgpgroup.biz/product/potassium-nitrate/

Chemical Properties

white to yellow crystals

Chemical Properties

Potassium nitrite is a white to yellowish crystalline solid.

Physical properties

White or slight yellow prismatic granules; deliquesc; density 1.915 g/cm3;melts at 440°C; decomposition starts at 350°C; very soluble in water, 281 g/100mL at 0°C; much more soluble in boiling water, 413 g/100mL at 100°C;aqueous solution is alkaline; slightly soluble in cold alcohol but moderately solublel in hot alcohol; very soluble in liquid ammonia; decomposes in acids,liberating brown NO2fumes.

Uses

Used as a reagent (diazotizing) in organic chemistry.

Uses

In analytical chemistry.

Uses

Potassium Nitrite is a color fixative in meats which exists as white or yellowish granules or cylindrical sticks. it is very soluble in water. see nitrite.

Preparation

Potassium nitrite may be prepared by fusion of nitrate with lead:
KNO3+ Pb →KNO2+ PbO
The product is extracted with water and allowed to crystallize. Filtration separates nitrite from insoluble lead oxide.
Potassium nitrite also may be obtained by high temperature thermal decomposition of nitrate:
2KNO3→2KNO2+ O2↑.

Production Methods

Potassium nitrite, KNO2, yellowish-white solid, soluble, for med (1) by reaction of nitric oxide plus nitrogen tetroxide and potassium carbonate or hydroxide, and then evaporating, (2) by heating potassium nitrate and lead to a high temperature and then extracting the soluble portion (lead monoxide insoluble) with H2O, and evaporating.

Definition

potassium nitrite: A white orslightly yellow deliquescent solid,KNO2, soluble in water and insolublein ethanol; r.d. 1.91; m.p. 440°C; mayexplode at 600°C. Potassium nitrite isprepared by the reduction of potassiumnitrate. It reacts with cold dilutemineral acids to give nitrousacid and is also able to behave as areducing agent (if oxidized to the nitrate)or as an oxidizing agent (if reducedto nitrogen). It is used inorganic synthesis because of its partin diazotization, and in detecting thepresence of the amino groups in organiccompounds.

General Description

A yellowish white crystalline solid. Noncombustible but accelerates the burning of all combustible material. If large quantities are involved in fire or if the combustible material is finely divided, an explosion may result. May explode under prolonged exposure to heat. Toxic oxides of nitrogen are produced in fires. Used to make other chemicals and in chemical analysis.

Air & Water Reactions

Water soluble.

Reactivity Profile

POTASSIUM NITRITE is an oxidizing agent. Mixtures with phosphorus, tin(II) chloride or other reducing agents may react explosively [Bretherick 1979 p. 108-109]. Contamination by ammonium compounds can initiate spontaneous decomposition. The resulting heat may ignite surrounding combustible material. Reacts with acids to form toxic nitrogen dioxide gas. Mixing with liquid ammonia forms diPOTASSIUM NITRITE, which is very reactive and easily explosive [Mellor 2, Supp. 3:1566 1963]. Melting together with an ammonium salt leads to a violent explosion [Von Schwartz 1918 p. 299]. A mixture with potassium cyanide may cause an explosion. When a little ammonium sulfate is added to fused POTASSIUM NITRITE, a vigorous reaction occurs attended by flame [Mellor 2:702. 1946-47].

Hazard

Fire and explosion risk when shocked or heated, or in contact with organic materials, strong oxidizing agent.

Health Hazard

Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or death. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause pollution.

Fire Hazard

These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard.

Flammability and Explosibility

Not classified

Safety Profile

Poison by ingestion. Human systemic effects: tinnitus, pulse rate increase, blood pressure lowering. Experimental teratogenic and reproductive effects. Nitrites have been implicated in an increased incidence of cancer. Mutation data reported. Flammable when exposed to heat or flame. A powerful oxidzing material. Slight explosion hazard when exposed to heat. It wdl explode at 1000°F. Explosive reaction with potassium amide + heat, potassium cyanide or other cyanide salts + heat. Violent reaction or ignition with ammonium salts (e.g., ammonium sulfate), boron. Disproportionates on heating in the absence of air forming KNO3 and K2O and evolving N2. Upon decomposition it emits toxic fumes of K2O. See also NITRITES.

Potential Exposure

Potassium nitrite is used in chemical analysis, as a food additive; in fertilizers; in medications as a vasodilator and as antidote for cyanide poisoning.

Shipping

UN1488 Potassium nitrite, Hazard Class: 5.1; Labels: 5.1-Oxidizer. UN1479 Oxidizing solid, n.o.s., Hazard Class: 5.1; Labels: 5.1-Oxidizer, Technical Name Required.

Purification Methods

A saturated solution at 0o is warmed and partially evaporated under vacuum. The crystals so obtained are filtered off from the warm solution. (This procedure is designed to reduce the level of nitrate impurity and is based on the effects of temperature on solubility. The solubility of KNO3 in water is 13g/100mL at 0o, 247g/100mL at 100o; for KNO2 the corresponding figures are 280g/100mL and 413g/100mL.) Alternatively, dissolve it in H2O and precipitate by adding of EtOH.

Incompatibilities

A strong oxidizer. Reacts violently with combustible and reducing materials. Heat above 530 ? C may cause explosion. Incompatible with cyanide salts; boron, ammonium sulfate; potassium amide; and acids. Decomposes on contact with even weak acids producing toxic nitrogen oxide fumes.

POTASSIUM NITRITE Preparation Products And Raw materials

Raw materials

Preparation Products

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POTASSIUM NITRITE Suppliers

Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
4006608290; 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40241
Advantage
62
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30132
Advantage
84
BeiJing Hwrk Chemicals Limted
Tel
0757-86329057 18501085097
Fax
010-89508210
Email
sales3.gd@hwrkchemical.com
Country
China
ProdList
7508
Advantage
55
Energy Chemical
Tel
021-021-58432009 400-005-6266
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
44751
Advantage
61
Beijing Ouhe Technology Co., Ltd
Tel
010-82967028 13552068683
Fax
+86-10-82967029
Email
2355560935@qq.com
Country
China
ProdList
12426
Advantage
60
Shanghai Hanhong Scientific Co.,Ltd.
Tel
021-54306202 13764082696;
Email
info@hanhongsci.com
Country
China
ProdList
42982
Advantage
64
Shandong Xiya Chemical Co., Ltd
Tel
4009903999 13355009207
Fax
0539-6365991
Email
3007715519@qq.com
Country
China
ProdList
18736
Advantage
57
BEST-REAGENT
Tel
400-1166-196 18981987031
Fax
028-84555506 800101999
Email
cdhxsj@163.com
Country
China
ProdList
11726
Advantage
57
Tianjin heowns Biochemical Technology Co., Ltd.
Tel
400 638 7771
Email
sales@heowns.com
Country
China
ProdList
14443
Advantage
57
Sinopharm Chemical Reagent Co,Ltd.
Tel
86-21-63210123
Fax
86-21-63290778 86-21-63218885
Email
sj_scrc@sinopharm.com
Country
China
ProdList
9823
Advantage
79
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View Lastest Price from POTASSIUM NITRITE manufacturers

Shaanxi Dideu Medichem Co. Ltd
Product
Potassium nitrite 7758-09-0
Price
US $1.00-1.00/KG
Min. Order
1g
Purity
99%
Supply Ability
50tons
Release date
2020-04-22
Hebei Mojin Biotechnology Co., Ltd
Product
POTASSIUM NITRITE 7758-09-0
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
50000KG/month
Release date
2023-06-28
Baoji Guokang Bio-Technology Co., Ltd.
Product
POTASSIUM NITRITE 7758-09-0
Price
US $4980.00/T
Min. Order
1T
Purity
98%
Supply Ability
1-200mt
Release date
2021-06-09

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