Description

Sodium Chromate CAS NO 7775-11-3 is an inorganic salt and a powerful oxidizing agent, widely recognized for its role as a key intermediate and corrosion inhibitor. Its consistent quality and reliable performance are critical for industrial processes requiring precise chemical control. This product is essential for manufacturers and suppliers in sectors such as metal finishing, pigments, and water treatment.

Application

• Corrosion Inhibitor: A primary component in cooling water treatment systems and anti-corrosion formulations for metal surfaces.
• Pigment Manufacturing: Serves as a crucial precursor in the synthesis of various chrome-based pigments, including chrome yellow and molybdate orange.
• Metal Finishing & Plating: Used in chromate conversion coatings to provide corrosion resistance and improve paint adhesion on aluminum, zinc, and other metals.
• Chemical Synthesis: Acts as an important oxidizing agent and intermediate in the production of other chromium compounds.
• Wood Preservative: Employed in formulations for protecting timber against fungal decay and insect damage.
• Laboratory Reagent: Utilized in analytical chemistry as a standard and for various qualitative and quantitative tests.

Basic Information

Product Name	Sodium Chromate
CAS No.	7775-11-3
Molecular Formula	Na2CrO4
Molecular Weight	161.97 g/mol
Synonyms	Chromic Acid, Disodium Salt; Disodium Chromate; Sodium Chromate(VI); Chromium Disodium Oxide; Natriumchromat; Neutral Sodium Chromate; Chromic Acid (H2CrO4), Disodium Salt
EINECS	231-889-5

Quality Control

Our Sodium Chromate is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. We adhere to relevant industry standards, and our quality assurance includes comprehensive testing for assay, impurity profiles, and physical parameters. A Certificate of Analysis (COA) is provided with each shipment to guarantee specification compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids, organic substances, and reducing agents. Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption.

Specification

Item	Specification
Appearance	Yellow crystalline powder
Identification (IR)	Conforms
Assay (Na2CrO4)	≥ 98.0 %
pH (5% solution)	8.0 - 10.0
Chloride (Cl)	≤ 0.1 %
Sulfate (SO4)	≤ 0.5 %
Water Insoluble Matter	≤ 0.1 %
Loss on Drying	≤ 2.0 %

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