Potassium Dichromate – Manufacturer, Supplier & Exporter | DPRJ Universal

What is the primary use of Potassium Dichromate?

The primary industrial uses of Potassium Dichromate include leather tanning, wood preservation, and textile dyeing. It is also heavily utilized as an oxidizing agent in laboratory settings and industrial chemical preparation, as well as in UV calibration processes.

What is the molecular weight and chemical formula of Potassium Dichromate?

The chemical formula for Potassium Dichromate is K₂Cr₂O₇. Its molecular weight (or molar mass) is approximately 294.18 g/mol.

How is Potassium Dichromate prepared or synthesized industrially?

Potassium dichromate preparation is typically carried out via a lab method or industrial scale reaction by reacting potassium chloride with sodium dichromate. It can also be synthesized through the industrial roasting process of chromite ore with potassium carbonate.

What is the Potassium Dichromate structure and colour?

Potassium Dichromate is famous for its distinct bright orange-red colour. Structurally, it features a dichromate anion consisting of two chromium atoms sharing a central oxygen atom, balanced by two potassium cations.

What is the oxidation state and equivalent weight of Potassium Dichromate?

In Potassium Dichromate (K₂Cr₂O₇), the chromium atom is in the +6 oxidation state. The equivalent weight (eq wt) varies depending on the reaction; in acidic mediums where it gains 6 electrons (valency factor of 6), the equivalent weight is approximately 49.03 g/eq.

What are the key physical properties, such as structure and molecular mass?

Key properties include a molecular mass of 294.18 g/mol, an iconic orange crystalline appearance, and stable non-deliquescent crystals. Acidified potassium dichromate acts as a highly potent reagent in chemistry.

How is Potassium Dichromate used in leather and calibration industries?

In the leather industry, it serves as a critical agent in chrome tanning to stabilize animal hides. In analytical chemistry, high-purity potassium dichromate is standardly used in spectrophotometer UV calibration.

Is Potassium Dichromate hazardous and what are the handling precautions according to NFPA 704?

Yes, Potassium Dichromate is highly toxic, carcinogenic, and a strong oxidizer. According to the NFPA 704 standard, it poses severe health hazards. Handling requires strict PPE compliance, including gloves, respirators, and working in well-ventilated professional environments.

What happens when potassium chromate turns yellow or reacts?

Potassium chromate is yellow in color. Potassium dichromate (orange) and potassium chromate (yellow) exist in an equilibrium that shifts based on pH; adding a base converts the orange dichromate into yellow chromate.