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521051

Sigma-Aldrich

Calcium nitrite solution

30 wt. % in H2O

Synonym(s):

Calcium dinitrite, Calcium nitrite, Calcium nitrite (Ca(NO2 )2 )

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About This Item

Linear Formula:
Ca(NO2)2
CAS Number:
13780-06-8
Molecular Weight:
132.09
MDL number:
MFCD00049399
UNSPSC Code:
12352302
PubChem Substance ID:
24874185
NACRES:
NA.23

form

liquid

concentration

27-33% (titration by KMnO4)
30 wt. % in H2O

refractive index

n20/D 1.3946

density

1.30 g/mL

SMILES string

[Ca++].[O-]N=O.[O-]N=O

InChI

1S/Ca.2HNO2/c;2*2-1-3/h;2*(H,2,3)/q+2;;/p-2

InChI key

AONJRPXZCVADKF-UHFFFAOYSA-L

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.

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

230.0 °F - closed cup

Flash Point(C)

110 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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A novel approach for quantitative LIBS fluorine analysis using CaF emission in calcium-free samples
Alvarez-Llamas C, et al.
Journal of Analytical Atomic Spectrometry, 32(1), 162-166 (2017)
Effect of calcium nitrite-based corrosion inhibitor in preventing corrosion of embedded steel in concrete
Ann K, et al.
Cement and Concrete Research, 36(3), 530-535 (2006)
Nitrite admixed concrete for wastewater structures: Mechanical properties, leaching behavior and biofilm development
Li X, et al.
Construction Building Materials, 233, 117341-117341 (2020)
Rosemary M Onjiko et al.
Analytical methods : advancing methods and applications, 9(34), 4964-4970 (2017-10-25)
Single-cell mass spectrometry (MS) empowers the characterization of metabolomic changes as cells differentiate to different tissues during early embryogenesis. Using whole-cell dissection and capillary electrophoresis electrospray ionization (CE-ESI) MS, we recently uncovered metabolic cell-to-cell differences in the 8- and 16-cell
Xuan Li et al.
Environmental science & technology, 54(4), 2323-2333 (2020-01-25)
Microbially induced concrete corrosion is a major deterioration process in sewers, causing a huge economic burden, and improved mitigating technologies are required. This study reports a novel and promising effective solution to attenuate the corrosion in sewers using calcium nitrite-admixed
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