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Potassium Dichromate

 
 

CHARACTERISTICS :
Potassium Dichromate is an odorless, fine, red-orange, granular and crystalline product that dissolves readily in water.

2 CrO 4 2- (aq) + 2 H + (aq)  Cr 2 O 7 2- (aq) + H 2 O (l)

 

PHYSICAL PROPERTIES:

S.No

Description

Specifications

1

Molecular Formula

K 2 Cr 2 O 7

2

Molecular weight

294.19

3

Bulk Density (g/ml)

1.4 to 1.6

4

Solubility in water (%).

6.5% at 10 Deg C

5

Appearance

Red-orange crystalline solid

6

Odor

Odorless

 

CHEMICAL PROPERTIES:

S.No

Description

Specifications

1

Assay, Wt% min

99.0

2

PH of 5% Solution

8.6 to 9.8

3

Sulphate, Wt% Max

0.25

4

Chloride, Wt% Max

0.2

 

APPLICATIONS:
- Chromium source in preparing chromium compounds
- Leather tanning and screen printing
- Electroplating
- Pyrotechnics and explosives
- Pigment preparation
- Wood preservative
- Metal treating and corrosion inhibitor
- Oil drilling & silver testing
- Catalyst for the chromium metal production
- Photographic engraving
- Preparation of "chromic acid", which can be used for etching materials


PACKAGING:
- 25 kg or 50 kg inner layer polyethylene, outer layer polypropylene woven bags
- 1000 kg big bags. Palletized and shrink wrapped


STORAGE & HANDLING CONDITIONS:
- Store in cool and dry place
- Keep away from sunlight and heat sources
- Protect against physical damage
- Store in a dry location separate from combustible, organic or other readily oxidizable
materials
- Avoid storage on wood floors
- Remove and dispose of any spilled dichromate; do not return to original containers
- Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product

SAFETY PRECAUTIONS:
- Harmful effect on skin and eye
- After contact with skin and eye wash immediately with water
- Avoid breathing the dust
- Wear special protective equipment such as protective clothing, including boots, gloves, lab coat, apron or coveralls, as appropriate, to prevent skin contact for maintenance break-in or where exposures may exceed established exposure levels
- Use chemical safety goggles and/or full-face shield where dusting or splashing solutions is possible. Maintain eye wash fountain and quick-drench facilities in work area

 
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