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Calcium nitrite

Calcium nitrite
Calcium nitrite structure
CAS No.
13780-06-8
Chemical Name:
Calcium nitrite
Synonyms
Daraset;CALCIUM NITRITE;cium nitrite soL;Calcium dinitrite;Nitrousacid,calciumsalt;calcium nitrite solution;CALCIUM NITRITE ANHYDROUS;Calcium nitrite fandachem;CalciumNitriteCa(NO3)2*4H2O;Nitrous acid, calcium salt (2:1)
CBNumber:
CB6709679
Molecular Formula:
CaN2O4
Formula Weight:
132.09
MOL File:
13780-06-8.mol

Calcium nitrite Properties

Melting point:
390 °C
Density 
2.23
refractive index 
n20/D 1.3946
Flash point:
110 °C
form 
white-yellow hexagonal crystals
Water Solubility 
slightly soluble alcohol [MER06]; g/100g solution H2O: 38.3 (0°C), 43.0 (18.5°C), 71.2 (91°C); solid phase Ca(NO2)2 · 4H2O (0°C, 18.5°C), Ca(NO2)2 ·2H2O (91°C) [KRU93]
Merck 
13,1688
CAS DataBase Reference
13780-06-8(CAS DataBase Reference)
FDA UNII
F538343O0T
EPA Substance Registry System
Calcium nitrite (13780-06-8)
SAFETY
  • Risk and Safety Statements
Safety Statements  23-24/25
WGK Germany  3

Calcium nitrite price More Price(5)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 521051 Calcium nitrite solution 30 wt. % in H2O 13780-06-8 1l $40.4 2021-12-16 Buy
Biosynth Carbosynth FC147193 Calcium nitrite 13780-06-8 2 g $103 2021-12-16 Buy
Biosynth Carbosynth FC147193 Calcium nitrite 13780-06-8 10 g $357 2021-12-16 Buy
Biosynth Carbosynth FC147193 Calcium nitrite 13780-06-8 25 g $713 2021-12-16 Buy
AK Scientific S472 Calcium nitrite solution 13780-06-8 25mL $27 2021-12-16 Buy

Calcium nitrite Chemical Properties,Uses,Production

Description

Calcium nitrite has the formula of Ca(NO2)2 and the molecular weight of 132.0894 g/mol. It can be made by the usual double decomposition reaction of sodium nitrite and CaCl2. It forms a tetrahydrate that is isomorphous with the strontium and barium salts:
2Na2NO2 (aq) + CaCl2 ? Ca(NO2)2 (aq) + 4NaCl (aq)

Chemical Properties

white or yellowish deliquescent, hexagonal crystal(s); prepared from nitric oxide and a mixture consisting of calcium ferrate and calcium nitrate; used to inhibit corrosion in lubricants and concrete [MER06]

Physical properties

Calcium nitrite, Ca(NO2)2, has the CAS number of 13780-06-8 and occurs as yellow-white crystals. It is very hygroscopic. Its density is 2.23 g/cm3 and it decomposes at 392°C to form nitrogen oxides and CaO. It is slightly soluble in alcohol. Ca(NO2)2·4H2O loses two waters of hydration at about 80°C and one at 105°C to form the monohydrate. It loses the other at about 155°C. The anhydrate, if further heated, is unstable and oxidizes to the nitrate in air above 220°C:
Ca(NO2)2 + O2 + heat?Ca(NO3)2

Uses

Calcium nitrite has several industrial uses:
1. Calcium nitrite has high solubility, so can be used as a solution or powder in concrete as an “anti-freeze” during winter months as needed. Using this antifreeze at negative temperature can promote the hydration of minerals in cement, and the freezing point of operative temperature can be reduced to –25°C.
2. This salt is a steel rust inhibitor: calcium nitrite can clean steel and protect it from rust, and can protect steel material in concrete used to construct buildings and structures, to extend the useful life of concrete in buildings.
3. In concrete, Ca(NO2)2 acts as a coagulator: calcium nitrite is free of chlorine and alkali, capable to reduce alkali aggregation of concrete and improve its early strength and compressive resistance. The calcium nitrite protects steel reenforcing bars from chlorideinduced corrosion. One advantage to calcium nitrite is that its protection mechanism is well defined. Data are known that show the levels of chloride to which given levels of calcium nitrite will protect. Once corrosion initiates, the rates are lower with calcium nitrite present. These results have been used to produce reinforced concrete structures with durability in excess of 50–100 years.
4. Calcium nitrite can be used as corrosion inhibitor when added to lubricating agents.
5. Calcium nitrite can also be used in pharmaceutical, dyes and metallurgy industries, as a mild reducing agent.

Uses

Corrosion inhibitor in lubricants, concrete.

Preparation

Industrially, calcium nitrite is manufactured by reacting “NOX” gas with “lime”:
Ca(OH)2 + NO +NO2?Ca(NO2)2 +H2O
By carefully controlling calciumnitrite conditions, the selectivity on converted lime, on a molar basis, is over 95% pure. It is soluble in water (98.2 g/100 ml at 20 °C) and the solution must be evaporated at low temperature to obtain the tetrahydrate. If heated with NO2 gas, it also form the nitrate:
Ca(NO2)2 + NO2?Ca(NO3)2 + NO
Anhydrous calcium nitrite is unstable and slowly oxidizes in air to form the nitrate. It is also soluble in alcohol at 0.97 g/100 ml at 20 °C.

Purification Methods

Crystallise it from hot water (1.4mL/g) by adding ethanol and cooling to give the hydrate. It is deliquescent. [Ray & Ogg J Am Chem Soc 79 265 1957.]

Calcium nitrite Preparation Products And Raw materials

Raw materials

Preparation Products


Calcium nitrite Suppliers

Global( 101)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Hubei Ipure Biology Co., Ltd
+8618062405514
18062427325 ada@ipurechemical.com;ada@ipurechemical.com China 10352 58
HONG KONG IPURE BIOLOGY CO.,LIMITED
18062405514 86 18062405514
ada@ipurechemical.com CHINA 3475 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com China 22607 55
Hangzhou FandaChem Co.,Ltd.
008615858145714
+86-571-56059825 fandachem@gmail.com China 9165 55
Hubei xin bonus chemical co. LTD
86-13657291602
027-59338440 linda@hubeijusheng.com CHINA 23035 58
career henan chemical co
15093356674 0371-55982848
0086-371-86658258 factory@coreychem.com CHINA 29863 58
Zhengzhou Alfa Chemical Co.,Ltd
+8613343822234 +86-0371-55052911
sales5@alfachem.cn;sales9@alfachem.cn;sale1@alfachem.cn China 12858 58
SIMAGCHEM CORP
13806087780 +86 13806087780
shaobowang@simagchem.com CHINA 17384 58
Hefei TNJ Chemical Industry Co.,Ltd.
0551-65418671
0551-65418697 sales@tnjchem.com CHINA 37441 58
Shaanxi Dideu Medichem Co. Ltd
18192503167 +86-29-89586680
+86-29-88380327 1005@dideu.com CHINA 9938 58

View Lastest Price from Calcium nitrite manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-04-12 Calcium nitrite
13780-06-8
US $1.00 / Kg/Drum 25Kg/Drum 99% 20tons Hubei Ipure Biology Co., Ltd
2020-11-20 Calcium nitrite
13780-06-8
US $1.00 / drums 1KG 98% 1kg HONG KONG IPURE BIOLOGY CO.,LIMITED
2020-01-09 Calcium nitrite
13780-06-8
US $9.80 / KG 1g ≥99% 100kg Career Henan Chemical Co

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