Description

Calcium Nitrite Monohydrate is an inorganic salt widely utilized as a highly effective corrosion inhibitor and set accelerator in cementitious systems. Its primary value lies in its ability to protect steel reinforcement from chloride-induced corrosion, significantly extending the service life of concrete structures in demanding environments. This makes it a critical raw material for construction, infrastructure, and specialty chemical manufacturers globally. The compound is also employed in various chemical synthesis and water treatment processes.

Application

• Concrete Corrosion Inhibitor: Primary application as an anodic inhibitor to protect steel rebar in bridges, parking garages, marine structures, and roadways.
• Cement Set Accelerator: Used in cold-weather concreting to accelerate the hydration process and reduce setting time.
• Chemical Intermediate: Serves as a precursor in the synthesis of other nitrite compounds and specialty chemicals.
• Wastewater Treatment: Acts as an oxygen scavenger and corrosion inhibitor in closed-loop water systems and industrial cooling towers.
• Metal Finishing & Heat Treatment: Employed in certain baths for surface treatment and as a component in heat transfer salts.
• Pharmaceutical & Food Industry (High-Purity Grades): Used in limited applications as a preservative or in specific synthetic routes under strict purity controls.

Basic Information

Product Name	Calcium Nitrite Monohydrate
CAS No.	10031-34-2
Molecular Formula	Ca(NO2)2·H2O
Molecular Weight	150.11 g/mol
Synonyms	Calcium dinitrite monohydrate; Nitrous acid, calcium salt, monohydrate; Calcium Nitrite Hydrate; Calciumnitritemonohydrate; Calcium(II) nitrite monohydrate; UN1454 (for transport); Corrosion Inhibitor CNI; CNS (in construction industry)
EINECS	233-332-1

Quality Control

Our Calcium Nitrite Monohydrate is manufactured under a rigorous quality management system. Each batch is tested to ensure it meets precise chemical and physical specifications relevant to its intended industrial application. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay, impurity profiles, and physical properties. For specific regulatory or grade requirements (e.g., construction material standards), please contact our technical team.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after initial use to prevent caking and degradation. Store away from strong acids, reducing agents, and combustible materials. Recommended storage temperature: 15-25°C.

Specification

Item	Specification
Appearance	White to yellowish crystalline solid or solution
Identification (IR)	Conforms
Assay (as Ca(NO2)2·H2O)	≥ 93.0 %
Calcium (Ca) Content	Contact for details
Nitrite (NO2) Content	Contact for details
pH (30% Solution)	9.0 - 11.5
Water Insolubles	≤ 0.5 %
Chloride (Cl)	≤ 0.1 %
Sulfate (SO4)	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.