Chemical Properties
Ferrous ammonium sulfate is a pale green or
blue-green solid (powder or lumpy crystals).
Definition
ChEBI: A compound of ammonium, iron and sulfate in which the ratio of ammonium to iron(2+) to sulfate ions is 2:1:2.
General Description
A light green crystalline solid. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. FERROUS AMMONIUM SULFATE(10045-89-3) is used in medicine, chemical analysis and metallurgy.
Reactivity Profile
FERROUS AMMONIUM SULFATE is a weak reducing agent. Irritating and toxic ammonia and oxides of nitrogen may form in fires [USCG, 1999].
Air & Water Reactions
Soluble in water that forms weakly acidic solutions. Deliquesces in air.
Health Hazard
Inhalation of dust irritates nose and throat. Ingestion causes irritation of mouth and stomach. Dust irritates eyes and can irritate skin on prolonged contact.
Potential Exposure
This substance is used in photography,
analytical chemistry and in dosimeters.
Fire Hazard
Special Hazards of Combustion Products: Irritating and toxic ammonia and oxides of nitrogen may form in fires.
First aid
If this chemical gets into the eyes, remove any
contact lenses at once and irrigate immediately for at least
15 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, includ ing 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 medi cal attention. Give large quantities of water and induce
vomiting. Do not make an unconscious person vomit.
Description
Ferrous ammonium sulfate is a pale green orblue-green solid (powder or lumpy crystals). Molecularweight = 392.14. Hazard Identification (based on NFPA-704 M Rating System): Health 3, Flammability 0,Reactivity 1. Soluble in water.
Physical properties
Bluish-green monoclinic crystal; density 1.86 g/cm3; deomposes at 100°C;soluble in water; insoluble in alcohol.
Preparation
Ferrous ammonium sulfate may be prepared by mixing an equimolar solution of ferrous sulfate and ammonium sulfate, followed by evaporation andcrystallization.
Purification Methods
A solution in warm water (0.67g/mL) is cooled rapidly to 0o, and the resulting light bluish-green monoclinic crystals are filtered at the pump, washed with cold distilled water and pressed between sheets of filter paper to dry it. The solubility at 25o is 0.36g/mL. It separates as an almost white powder when a saturated aqueous solution is diluted with EtOH.
Flammability and Explosibility
Notclassified
storage
Color Code—Blue: Health Hazard/Poison: Storein a secure poison location. Prior to working with thischemical you should be trained on its proper handling andstorage. Store in tightly closed containers in a cool, wellventilated area away from light.