Hazard
Toxic by inhalation, strong irritant. Con-
firmed carcinogen.
Potential Exposure
It is used to inhibit corrosion and in
dyeing, photography and many chemical reactions. Used as
a fungicide and fire retardant.
First aid
If this chemical gets into the eyes, remove any
contact lenses at once and irrigate immediately for at least
30 minutes, occasionally lifting upper and lower lids. Seek
medical attention immediately. If this chemical contacts the
skin, remove contaminated clothing and wash immediately
with soap and water. Seek medical attention immediately.
If this chemical has been inhaled, remove from exposure,
begin rescue breathing (using universal precautions, including
resuscitation mask) if breathing has stopped and CPR if
heart action has stopped. Transfer promptly to a medical
facility. When this chemical has been swallowed, get medical
attention. Give large quantities of water and induce
vomiting. Do not make an unconscious person vomit.
Shipping
UN3288 Toxic solids, inorganic, n.o.s., Hazard
Class: 6.1; Labels: 6.1-Poisonous materials, Technical
Name Required.
Incompatibilities
A strong oxidizer and an explosive.
Contact with combustible, organic and other readily oxidizable
substances may cause fire and explosions. Hydrazine,
other reducing agents. Corrosive to metals.
Chemical Properties
Ammonium chromate is a yellow crystalline
compound which can be used in solution, which is yellow
with an ammonia odor.
Waste Disposal
Consult with environmental
regulatory agencies for guidance on acceptable disposal
practices. Generators of waste containing this contaminant
(≥100 kg/mo) must conform with EPA regulations governing
storage, transportation, treatment, and waste disposal.
Addition of a large volume of a reducing agent solution
(hypo, bisulfite or ferrous salt, and acidify with 3 M sulfuric
acid). When reduction is complete, flush to drain with
large volumes of water.
Uses
Reagent for the preparation of a solid heterogeneous oxidizing agent for liquid phase oxidation of alcohols.
Uses
Ammonium chromate, is used in photography as a sensitizer for gelatin coatings. It's often used in photography, textile printing, and fixing chromate dyes on wool. It is also used as an analytical reagent, catalyst.
Uses
Sensitizing gelatin in photography, in textile printing pastes, in fixing chromate dyes on wool, and as a reagent in analytical chemistry.
Purification Methods
Crystallise it from weak aqueous ammonia (ca 2.5mL/g) by cooling from room temperature. It loses NH3 on heating to form ammonium dichromate. POISONOUS.
