Ferrous ammonium sulfate

  • Ammonium ferrous sulfate
  • Diammonium iron bis(sulfate)
Formula
(NH4)2Fe(SO4)2
Structure
Description
A light green crystalline solid.
Uses
In photography, as analytical standard, as polymerization catalyst, in dosimeters.

Registry Numbers and Inventories.
CAS
10045-89-3
EC (EINECS/ELINCS)
233-151-8
RTECS
WS5890000
RTECS class
Other
UN (DOT)
9122
Merck
12,552
Beilstein/Gmelin
34557 (G)
EPA OPP
50506
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
FeH8N2O8S2
Formula mass
284.05
Melting point, °C
100
Vapor density (air=1)
>1
Density
1.86 g/cm3 (20 C)
Solubility in water
269 g/L

Hazards and Protection.
Storage
Keep containers tightly closed in a well ventilated area away from food products. Keep away from heat, light, and water. Material will absorb moisture from the atmosphere.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Dust mask; goggles or face shield; protective gloves.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Cover solids with a plastic sheet to prevent dissolving in rain or fire fighting water. Water spill: Allow to aerate. Neutralize with agricultural lime (CaO), crushed limestone (CaCO3), or sodium bicarbonate (NaHCO3). Adjust pH to neutral (pH=7). Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates.
Stability
Slowly oxidizes in air. Ferrous ammonium sulfate hexahydrate.
Incompatibilities
Incompatible with sulfuric acid.

Fire.
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.)
Fire potential
Nonflammable.
Hazards
Containers may explode when heated.
Combustion products
Irritating and toxic ammonia and oxides of nitrogen may form in fires.
Health
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure effects
Blood pressure may be decreased following an iron overdose. Lethargy, restlessness or confusion may be seen early in the poisoning. Convulsions and coma may occur in later phases. Case reports of pregnant women who have received early aggressive treatment (decontamination and/or deferoxamine) have described good fetal outcomes.
   Ingestion
Nausea, vomiting, diarrhea and gastrointestinal hemorrhage may develop.
   Inhalation
Noncardiogenic pulmonary edema may develop with severe intoxication.
   Skin
Severe thermal burn with ferrous sulfate slurry has caused classical symptoms of ingested iron poisoning.
   Eyes
Irritants may cause swelling, redness and pain at any site, especially at mucous membranes. The mouth, nose, and eyes are susceptible to these effects.

First aid
 
   Ingestion
The possible benefit of early removal of some ingested material by cautious gastric lavage must be weighed against potential complications of bleeding or perforation. Activated charcoal activated charcoal binds most toxic agents and can decrease their systemic absorption if administered soon after ingestion. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
9122
Response guide
Hazard class
9
USCG CHRIS Code
FAS
 
Std. Transport #
4962640 4962641