Calcium nitrite

ChemicalBook > CAS DataBase List > 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;CALGIUMNITRITE SOLUTION;calcium nitrite solution;CALCIUM NITRITE ANHYDROUS;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
solubility: slightly soluble in ethanol
form: white-yellow hexagonal crystals
color: white-yellow hexagonal, hexane crystals, crystalline; hygroscopic
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
LogP: -2.52 at 20℃
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)

Symbol(GHS)

Signal word

Danger

Hazard statements

H301Toxic if swalloed

H318Causes serious eye damage

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

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.

P310Immediately call a POISON CENTER or doctor/physician.

P321Specific treatment (see … on this label).

P330Rinse mouth.

P405Store locked up.

P501Dispose of contents/container to..…

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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: $49
Updated: 2024/03/01

Biosynth Carbosynth

Product number: FC147193
Product name: Calcium nitrite
Packaging: 2g
Price: $103
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FC147193
Product name: Calcium nitrite
Packaging: 10g
Price: $357
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FC147193
Product name: Calcium nitrite
Packaging: 25g
Price: $713
Updated: 2021/12/16

AK Scientific

Product number: S472
Product name: Calcium nitrite solution
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.

General Description

Calcium nitrite solution (Ca(NO₂)₂) is widely utilized as a corrosion inhibitor. It protects the metal surface against chloride attack and increases the threshold level and improves the overall life of the concrete. Ca(NO₂)₂ does not change the mechanical properties of the cement.

Flammability and Explosibility

Not classified

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

Nitrogen CALCIUM CARBONATE Nitric acid Calcium hydroxide Ammonia

Preparation Products

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View Lastest Price from Calcium nitrite manufacturers

Hebei Mojin Biotechnology Co., Ltd

Product: Calcium nitrite 13780-06-8
Price: US $0.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 50000KG/month
Release date: 2023-09-20

Henan Bao Enluo International TradeCo.，LTD

Product: Calcium nitrite 13780-06-8
Price: US $100.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 500t/month
Release date: 2023-07-26

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

13780-06-8, Calcium nitriteRelated Search:

Calcium nitrate STRONTIUM NITRIDE Beryllium nitrate FERROUS SULFATE Sodium nitrate Magnesium nitrate RADIUMNITRATE strontium nitrite CALCIUM NITRATE HYDRATE Calcium nitrate tetrahydrate Calcium nitrite CALCIUM NITRATE-15N nitric acid, ammonium calcium salt BIS(4-NITROPHENYL)PHOSPHORIC ACID CALCIUM SALT Calcium nitrite tetrahydrate CALCIUM NITRITE MONOHYDRATE Calcium nitrate trihydrate. CALCIUM NITRATE-15N2 4H2O

Nitrous acid, calcium salt (2:1)

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calcium nitrite solution

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Daraset

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cium nitrite soL

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13780-06-8

10124-57-5

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