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25% Ammonium Dichromate
25% Ammonium Dichromate


 
A pre-mixed solution of Potassium Dichromate for Gum-Dichromate Printing.

Item# Item Name Our Price Qty Add
808131009-0025 25% Ammonium Dichromate - 25ml
$6.20
808131009-0100 25% Ammonium Dichromate - 100ml
$29.95
808131009-0500 25% Ammonium Dichromate - 500ml
$134.75
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Technical Specs:
This information is from Wikipedia.com, and believed to be accurate. We reproduce that data here to assist in your work. The information is reproduced from Wikipedia.com as of June, 2008 and pursuant to the license at http://en.wikipedia.org/wiki/GNU_Free_Documentation_License.
Potassium dichromate
Potassium dichromate
Unit cell of potassium dichromate
IUPAC name Potassium dichromate(VI)
Other names Potassium bichromate
Bichromate of potash
Identifiers
CAS number [7778-50-9]
EINECS number 231-906-6
RTECS number HX7680000
Properties
Molecular formula K2Cr2O7
Molar mass 294.19 g/mol
Appearance Red-orange crystalline solid
Density 2.676 g/cm3, solid
Melting point

398C

Boiling point

500C decomp.

Solubility in water 4.9 g/100 ml (0C)
Structure
Crystal structure Triclinic (-form,<241.6 C
Coordination
geometry
Tetrahedral (for Cr)
Thermochemistry
Std enthalpy of
formation
fHo298
-2033 kJ/mol
Standard molar
entropy
So298
291,2 J.K−1.mol−1
Hazards
Main hazards Highly toxic
Carc. Cat. 1
Muta. Cat. 2
Repr. Cat. 2
Oxidant
Dangerous for
the environment
R-phrases R45, R46, R60, R61,
R8, R21, R25, R26, R34,
R42/43, R48/23, R50/53
S-phrases S53, S45, S60, S61
Flash point Non-flammable
Related compounds
Other anions Potassium chromate
Potassium molybdate
Potassium tungstate
Other cations Ammonium dichromate
Sodium dichromate
Related compounds Potassium permanganate
Except where noted otherwise, data are given for
materials in their standard state
(at 25 C, 100 kPa)

Infobox references



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