Ferric sulfate

  • Iron(III) sulfate monohdrate
  • Ferric sesquisulfate
  • Ferric tersulfate
  • Diiron tris(sulfate)
Formula
Fe2(SO4)3
Structure
Description
A yellow crystalline solid or a grayish-white powder.
Uses
In preparation of iron alums, other iron salts and pigments, as coagulant in water purification and sewage treatment, in etching aluminum, in pickling stainless steel and copper, as mordant in textile dyeing and calico printing, in soil conditioners, as polymerization catalyst.

Registry Numbers and Inventories.
CAS
10028-22-5
EC (EINECS/ELINCS)
233-072-9
RTECS
NO8505000
RTECS class
Mutagen
UN (DOT)
9121
Merck
12,4079
Beilstein/Gmelin
20284 (G)
EPA OPP
34902
Swiss Giftliste 1
G-1608
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
Fe2O12S3
Formula mass
399.86
Decomposition point, °C
480
Density
3.1 g/cm3 (20 C)
Solubility in water
Soluble

Hazards and Protection.
Storage
Store in a cool, dry place. Keep containers tightly closed.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Discard contaminated shoes.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Corrosive to metals.
Decomposition
Sulfur oxides (SOx), including sulfur oxide and sulfur dioxide.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: Use alcohol foam, carbon dioxide, or water spray when fighting fires involving this material.
Fire potential
Nonflammable.
Hazards
Some may burn but none ignite readily. May polymerize explosively when heated or involved in a fire. Containers may explode when heated. Some may be transported hot.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
4
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
May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. May cause liver and kidney damage.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid if irritation develops or persists. Flush skin with plenty of soap and water.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
9121
Response guide
Hazard class
9
Packing Group
II
 
USCG CHRIS Code
FSF
 
Std. Transport #
4934221 4932318