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A18722 Potassium dichromate, 99%

CAS Number
7778-50-9
Synonyms
Potassium bichromate

Stock No. Size Price ($) Quantity Availability
A18722-36 500g 45.50
A18722-0E 2500g 175.00
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Potassium dichromate, 99%

MDL
MFCD00011367
EINECS
231-906-6

Chemical Properties

Formula
Cr2K2O7
Formula Weight
294.18
Melting point
398°
Density
2.676
Storage & Sensitivity
Ambient temperatures.
Solubility
Soluble in water. Insoluble in alcohol.

Applications

Potassium dichromate is most often used as an oxidizing agent in laboratories and industries. It is used as a precursor to prepare potassium chrome alum which finds application in leather finishing and tanning. It is utilized in the preparation of chromic acid for cleaning glassware and etching materials. It is an active ingredient in cement used for retards setting and improves its density and texture. Furthermore, it is used in photography and in photographic screen printing. It is also used in wet test analysis as an analytical lab reagent and in ethanol determination.

Notes

Incompatible with strong oxidizing agents, reducing agents, strong bases, organic materials, acids, powdered metals, acid anhydrides and hydrazine.

Literature References

Optimal conditions have been determined for the oxidation of enamines to ketones in a biphasic ether-water solvent system: Tetrahedron Lett., 36, 2921 (1995).

Can be used catalytically in comblnation with Sodium percarbonate, A16045, as the stoichiometric oxidant under phase transfer conditions, for the oxidation of secondary alcohols to ketones: Synth. Commun., 25, 2349 (1995).

Asakai, T.; Hioki, A. Reliability in standardization of sodium thiosulfate with potassium dichromate. Microchem. J. 2015, 123, 9-14.

Cheng, Z.; Liu, P.; Guo, B.; Qiu, Y.; Xu, P.; Fan, H. Surface Activation of Carbon Paper with Potassium Dichromate Lotion and Application as a Supercapacitor. Appl. Surf. Sci. 2015, 349, 833-838.

GHS Hazard and Precautionary Statements

Hazard Statements: H272-H301-H310-H314-H317-H330-H334-H335-H340-H350-H360FD-H372

May intensify fire; oxidizer. Toxic if swallowed. Fatal in contact with skin. Causes severe skin burns and eye damage. May cause an allergic skin reaction. Fatal if inhaled. May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause respiratory irritation. May cause genetic defects. May cause cancer. May damage fertility. Suspected of damaging the unborn child. May damage fertility. May damage the unborn child. Causes damage to organs through prolonged or repeated exposure.

Precautionary Statements: P201-P202-P210-P220-P221-P260-P262-P264b-P270-P271-P272-P280g-P281-P284-P285-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P333+P313-P363-P370+P378q-P501c

Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Keep/Store away from clothing/combustible materials. Take any precaution to avoid mixing with combustibles. Do not breathe dust/fume/gas/mist/vapours/spray. Do not get in eyes, on skin, or on clothing. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Contaminated work clothing should not be allowed out of the workplace. Wear protective gloves. Use personal protective equipment as required. Wear respiratory protection. In case of inadequate ventilation wear respiratory protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. Rinse mouth. Do NOT induce vomiting. If skin irritation or rash occurs: Get medical advice/attention. Wash contaminated clothing before reuse. In case of fire: Use CO2, dry chemical, or foam Dispose of contents/ container to an approved waste disposal plant

Other References

Merck
14,7627
Hazard Class
5.1
Packing Group
II
Harmonized Tariff Code
2841.50
TSCA
Yes
RTECS
HX7680000

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