AMMONIUM DICHROMATE

CONTENT

What is Ammonium Dichromate? Properties of (NH4)2Cr2O7

It’s hazards Applications in daily life An experiment with Ammonium

Dichromate

WHAT IS AMMONIUM DICHROMATE?

(NH4)2Cr2O7 A salt that forms orange, monoclinic crystals; made from ammonium sulfate and sodium dichromate; soluble in water and alcohol; ignites readily; used in photography, lithography, pyrotechnics, and dyeing. Also known as ammonium bichromate. 

Ammonium Dichromate Properties:

Formula: (NH4)2Cr2O7

Molecular Weight: 252.07 g/molMelting Point: 1800CBoiling Point: DecomposesState at Room Temperature: Solid

Molecular or Ionic: MolecularMolecular Geometry: TetrahedralDiscription: Orange Crystals

Uses: Oil Purification, Pickling, Leather Tanning, Photography, Wood Preservative, Catalysts

Interesting Facts: Used in high school chemistry labs to make "volcanos"

Hazards:

Acute Health Effects:

Chronic Health Effects:

Cancer Hazard:

Application in Daily Life

Pyrotechnics

Photography

Lithography

Dyeing pigments

Manufacturing of alizarin

Leather tanning

Oil purification

Experiment

Research Question: What will be the result if ammonium dichromate reacts with oxygen?

Hypothesis: In my opinion, in the experiment the

ammonium dichromate will decomposes and it will be a combustion reaction and as a result of it, there will be some green or grey dust particles.

List of Equipment:

Metal Container 10g Ammonium Dichromate Bunsen Burner

Procedure:

The Result:

VIDEO

http://www.youtube.com/watch?v=CW4hN0dYnkM&list=LPUQJSgA0UH5k&index=1&feature=plcp

Sources: http://en.wikipedia.org/wiki/Ammonium_dichromate#

Safety http://www.chemistryland.com/CHM130S/08-Equations/

TypesReactions/TypesReactions.htm http://www.emsb.qc.ca/laurenhill/science/oxidation.html http://nj.gov/health/eoh/rtkweb/documents/fs/0097.pdf http://www.juliantrubin.com/encyclopedia/earthsciences

/volcano.html http://www.chemistry-reference.com/q_compounds.asp

?CAS=7789-09-5 http://wiki.answers.com/Q/Describe_the_action_of_heat_

on_ammonium_dichromate

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