Description

Sodium Chromate CAS NO 12680-48-7 is an inorganic salt widely recognized as a key intermediate and oxidizing agent in various industrial chemical processes. Its primary value lies in its role as a precursor for other chromium compounds and its strong oxidizing properties, which are essential for numerous manufacturing applications. This product is particularly important for industries involved in metal treatment, corrosion inhibition, and pigment production, where consistent quality and reliable supply are critical for operational success.

Application

• Corrosion Inhibitor: A critical component in cooling water treatment systems and anti-corrosion formulations for metal surfaces.
• Pigment Manufacturing: Serves as a key intermediate in the synthesis of chrome-based pigments, such as chrome yellow and zinc chromate.
• Metal Finishing: Used in electroplating baths and as a chemical conversion coating to enhance adhesion and corrosion resistance.
• Oxidizing Agent: Employed in organic synthesis and various chemical manufacturing processes that require a controlled, strong oxidant.
• Wood Preservative: Acts as a component in formulations designed to protect timber from fungal decay and insect damage.
• Laboratory Reagent: Utilized in analytical chemistry for titration and as a standard in quantitative analysis.

Basic Information

Product Name	Sodium Chromate
CAS No.	12680-48-7
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; Chromate of Soda; Yellow Ultramarine
EINECS	235-777-5

Quality Control

Our Sodium Chromate is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) for every shipment, detailing key parameters such as assay, impurity profiles, and physical specifications. Our quality commitment aligns with global standards, and we can support requirements for REACH compliance and other regional regulatory frameworks.

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 to prevent absorption of atmospheric moisture. Store at a controlled room temperature, typically between 15-25°C.

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	≤ 0.2 %
Loss on Drying	≤ 2.0 %

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