Ferric ammonium sulfate

  • Ammonium iron(III) sulfate dodecahydrate
  • Sulfuric acid, ammonium iron(3+) salt (2:1:1), dodecahydrate
Formula
(NH4)Fe(SO4)2.12H2O
Structure
Description
odorless clear amber liquid

Registry Numbers and Inventories.
CAS
7783-83-7
EC (EINECS/ELINCS)
233-382-4
R 36/38
RTECS
WS5900000
RTECS class
Mutagen
Merck
12,549
Beilstein/Gmelin
14628 (G)
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
H4NFeO8S2 . 12 H2O
Formula mass
482.19
Melting point, °C
39 - 41
Boiling point, °C
230
Vapor density (air=1)
N/R
Density
1.71 g/cm3
Solubility in water
1240 g/L (25 C)
Thermal expansion
0.0000895/K
Heat of fusion
95.3 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
Handling
Wash thoroughly after handling. Wash hands before eating. Use only in a well ventilated area. Do not breathe dust, vapor, mist, or gas. Do not get on skin or in eyes. Avoid ingestion and inhalation.
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 gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Reduce airborne dust and prevent scattering by moistening with water. Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizers.
Decomposition
Oxides of nitrogen, oxides of sulfur, ammonia and/or derivatives.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Substance is noncombustible. Extinguishing media: Use extinguishing media most appropriate for the surrounding fire.

Health.
Exposure effects
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated.
   Inhalation
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Do NOT induce vomiting. 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
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
HS Code
2833 30 00