Sodium Dichromate BICHROMATE
Sodium Bichromate
The sodium dichromate addition and lit : higher nitric acid concentration both reduce the chance of undesirable flash attack.
Key details
| Generic name | Sodium Bichromate |
|---|---|
| Active matter (%) | 99.5 |
| Standard packing | 50.00 Kg.PWD |
| Available pack sizes | 5, 10, 20, 25 Kg various grade of packing. High standard quality product with purity of 99.5% |
| Supply locations | Sodium Dichromate supplier in Mumbai, Gandhidham, Chennai, Kandla, Kolkata, Visakhapatnam, Fujairah, Dubai, Sharjah, Ajman, Abu Dhabi. |
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<span style="font-size: 10pt"><font face="Century Gothic">Dichromates are power oxidizing agents which find applications in: </font></span></p>
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<span style="font-size: 10pt"><font face="Century Gothic">Chromium source in preparing chromium compounds</font></span></li>
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<span style="font-size: 10pt"><font face="Century Gothic">Leather tanning and screen printing</font></span></li>
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<span style="font-size: 10pt"><font face="Century Gothic">Electroplating</font></span></li>
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<span style="font-size: 10pt"><font face="Century Gothic">Pyrotechnics and explosives</font></span></li>
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<span style="font-size: 10pt"><font face="Century Gothic">Pigment preparation</font></span></li>
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<span style="font-size: 10pt"><font face="Century Gothic">Wood Preservative</font></span></li>
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<span style="font-size: 10pt"><font face="Century Gothic">Metal Treating and corrosion inhibitor</font></span></li>
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<span style="font-size: 10pt"><font face="Century Gothic">Oil drilling</font></span></li>
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<span style="font-size: 10pt"><font face="Century Gothic">Catalyst for the chromium metal production</font></span></li>
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<span style="font-size: 10pt"><font face="Century Gothic">Photographic engraving</font></span></li>
</ul>
<p>
<span style="font-size: 10pt"><font face="Century Gothic">In biological field, potassium dichromate is used as a fixative for used for conservation of tissue sections. </font></span></p>
<p style="text-align: justify;">
<span style="text-align: justify;">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.</span><br style="text-align: justify;" />
<br style="text-align: justify;" />
<span style="text-align: justify;">More resistant chromium-nickel grades can be passivated in a 20 percent-by-volume nitric acid bath . As indicated in the same table, </span><strong style="text-align: justify;">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.</strong><br style="text-align: justify;" />
<br style="text-align: justify;" />
<span style="text-align: justify;">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 </span><span style="text-align: justify; color: rgb(255, 165, 0);"><span style="font-size: 16px;">chance of undesirable flash attack</span></span><span style="text-align: justify;">.</span><br style="text-align: justify;" />
<br style="text-align: justify;" />
<span style="text-align: justify;">APPEARANCE :: Odourless orange crystal grain</span><br style="text-align: justify;" />
<span style="text-align: justify;">Na2Cr2O7· 2H2O :: 98.0% min</span><br style="text-align: justify;" />
<span style="text-align: justify;">SULPHATES :: 0.4% max</span><br style="text-align: justify;" />
<span style="text-align: justify;">CHLORIDES :: 0.2% max </span></p>
<p>
<span style="font-size: 10pt;"><font face="Century Gothic">10588-01-9 (Anhydrous)</font></span><br />
<font face="Century Gothic"><span style="font-size: 10pt;">7789-12-0 (Dihydrate)</span></font><br />
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<u><strong>PHYSICAL AND CHEMICAL PROPERTIES</strong></u><br />
<br />
PHYSICAL STATE Odorless Orange to Red crystals or granules<br />
MELTING POINT 357 C<br />
BOILING POINT 400 C<br />
<br />
SPECIFIC GRAVITY 2.35<br />
SOLUBILITY IN WATER Highly soluble (74.0% at 25°C)<br />
<br />
pH 3.0 - 4.6 upon concentration<br />
<br />
VAPOR DENSITY 10<br />
<br />
NFPA RATINGS<br />
Health: 4; Flammability: 0; Reactivity: 2; Special Hazard: OX<br />
<br />
FLASH POINT 400 C<br />
<br />
STABILITY Stable under ordinary conditions </p>
<p>
Most popular product for Hot dip galvanizing & Protective coatings.</p>
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