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Calcium nitrite

Product Name
Calcium nitrite
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
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Calcium nitrite Property

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)
EPA Substance Registry System
Calcium nitrite (13780-06-8)
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Safety

Safety Statements 
23-24/25
WGK Germany 
3
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Hazard and Precautionary Statements (GHS)

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
521051
Product name
Calcium nitrite solution
Purity
30 wt. % in H2O
Packaging
1l
Price
$40.4
Updated
2021/12/16
Biosynth Carbosynth
Product number
FC147193
Product name
Calcium nitrite
Packaging
2 g
Price
$103
Updated
2021/12/16
Biosynth Carbosynth
Product number
FC147193
Product name
Calcium nitrite
Packaging
10 g
Price
$357
Updated
2021/12/16
Biosynth Carbosynth
Product number
FC147193
Product name
Calcium nitrite
Packaging
25 g
Price
$713
Updated
2021/12/16
AK Scientific
Product number
S472
Product name
Calciumnitritesolution
Packaging
25mL
Price
$27
Updated
2021/12/16
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Calcium nitrite Chemical Properties,Usage,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

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Calcium nitrite Suppliers

Shanxi Ruihui Technology Co., Ltd.
Tel
0354-3981777-
Email
170212677@qq.com
Country
China
ProdList
1
Advantage
58
Energy Chemical
Tel
021-58432009-
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
43432
Advantage
61
BEST-REAGENT
Tel
400-1166-196;028-84555506- ;028-84555506-
Email
cdhxsj@163.com;1955352637@qq.com;cdhxsj@163.com
Country
China
ProdList
11718
Advantage
57
Tianjin heowns Biochemical Technology Co., Ltd.
Tel
400 638 7771
Email
sales@heowns.com
Country
China
ProdList
14457
Advantage
57
Beijing HuaMeiHuLiBiological Chemical
Tel
010-56205725;010-86181995
Fax
010-65763397
Email
waley188@sohu.com
Country
China
ProdList
12341
Advantage
58
Huainan Kedi Chemical Factory
Tel
0554-2106669
Fax
0554-2666215
Email
sales1@kedichem.com
Country
China
ProdList
4938
Advantage
55
Chengdu HuaXia Chemical Reagent Co. Ltd
Tel
400-1166-196;028-84555506- ;028-84555506-
Fax
QQ:800101999
Email
cdhxsj@163.com;cdhxsj@163.com;cdhxsj@163.com
Country
China
ProdList
13363
Advantage
58
Chizhou Kailong Import and Export Trade Co., Ltd.
Tel
Please Email
Fax
-
Email
xg01_gj@163.com
Country
China
ProdList
9550
Advantage
50
Sigma-Aldrich
Tel
021-61415566- ;
Email
orderCN@merckgroup.com;orderCN@merckgroup.com
Country
China
ProdList
50837
Advantage
80
Hubei Yuancheng Saichuang Technology Co., Ltd.
Tel
18062666868/13048470578 QQ2355779403/2355880551
Fax
023-60363599,027-68886696
Email
andy@ycgmp.com;2355880551@qq.com;2355779403@qq.com
Country
China
ProdList
5053
Advantage
58
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View Lastest Price from Calcium nitrite manufacturers

Hubei Ipure Biology Co., Ltd
Product
Calcium nitrite 13780-06-8
Price
US $1.00/Kg/Drum
Min. Order
25Kg/Drum
Purity
99%
Supply Ability
20tons
Release date
2020-09-24
HONG KONG IPURE BIOLOGY CO.,LIMITED
Product
Calcium nitrite 13780-06-8
Price
US $1.00/drums
Min. Order
1KG
Purity
98%
Supply Ability
1kg
Release date
2020-11-19
Career Henan Chemical Co
Product
Calcium nitrite 13780-06-8
Price
US $9.80/KG
Min. Order
1g
Purity
≥99%
Supply Ability
100kg
Release date
2020-01-08

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