5, 10, 20, 25 Kg various grade of packing. High standard quality product with purity of 99.5%
Sodium Dichromate Manufacturer, supplier and exporter
After thorough cleaning, the stainless steel part is ready for immersion in a passivating acid bath. Any one of three approaches can be used--nitric acid passivation, nitric acid with sodium dichromate passivation and citric acid passivation. Which approach to use depends on the grade of stainless steel and prescribed acceptance criteria.
More resistant chromium-nickel grades can be passivated in a 20 percent-by-volume nitric acid bath . As indicated in the same table, less resistant stainless grades can be passivated by adding sodium dichromate to the nitric acid bath to make the solution more oxidizing and capable of forming a passive film on the surface.
Another option, used in place of nitric acid plus sodium dichromate, is to increase the concentration of nitric acid to 50 percent-by-volume , The sodium dichromate addition and lit : higher nitric acid concentration both reduce the chance of undesirable flash attack.
APPEARANCE :: Odourless orange crystal grain
Na2Cr2O7· 2H2O :: 98.0% min
SULPHATES :: 0.4% max
CHLORIDES :: 0.2% max
Dichromates are power oxidizing agents which find applications in:
- Chromium source in preparing chromium compounds
- Leather tanning and screen printing
- Pyrotechnics and explosives
- Pigment preparation
- Wood Preservative
- Metal Treating and corrosion inhibitor
- Oil drilling
- Catalyst for the chromium metal production
- Photographic engraving
In biological field, potassium dichromate is used as a fixative for used for conservation of tissue sections.
Most popular product for Hot dip galvanizing & Protective coatings.
PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE Odorless Orange to Red crystals or granules
MELTING POINT 357 C
BOILING POINT 400 C
SPECIFIC GRAVITY 2.35
SOLUBILITY IN WATER Highly soluble (74.0% at 25°C)
pH 3.0 - 4.6 upon concentration
VAPOR DENSITY 10
Health: 4; Flammability: 0; Reactivity: 2; Special Hazard: OX
FLASH POINT 400 C
STABILITY Stable under ordinary conditions
Sodium Dichromate (BICHROMATE) plays major parts in for Hot dip galvanizing & Protective coatings solution. sodium dichromate uses. sodium dichromate bichromate msds and sodium dichromate price can be downloaded directrly from our website or you may drop direct mail on our email address : firstname.lastname@example.org
Dubichem Marine International is major supplier of Sodium Dichromate (BICHROMATE) in Mussaffah South, Abu Dhabi, Dubai, Sharjah, Fujairah U.A.E / Middle East Gulf.
POTASSIUM DICHROMATE EXTRA PURE distributors in entire United Arab Emirates.
Sodium Dichromate is a chemical used as passivation. ... "The appearance of galvanized steel after quenching with sodium dichromate will be yellowish in color.
5% sodium dichromate is 50,000 ppm sodium dichromate. The usual sodium dichromate concentration of my clients is between 100 ppm and 500 ppm sodium dichromate. Also the pH of the dichromate tank MUST be held between about pH 4 and pH 4.5 or it will not properly function (adjust pH downward with very small amounts of HCl). The appearance of the SOLUTION is a very light yellow NOT ORANGE.
Galvanize Chemical Raw Material Suppliers in Dubai, Sharjah - UAE, GCC, Middle East. Chemical Manufacturers in Dubai, Chemical Companies in UAE.
Our India Based company is manufacturer and exporter of Sodium Dichromate / BICHROMATE.