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Chemical Datasheet

FERROUS SULFATE

Chemical Identifiers

CAS Number UN/NA Number DOT Hazard Label USCG CHRIS Code
  • 7720-78-7
  • 7782-63-0   (heptahydrate)
 none data unavailable
  • FRS
NIOSH Pocket Guide International Chem Safety Card
none none
NFPA 704
data unavailable
General Description
A greenish or yellow-brown crystalline solid. Density 15.0 lb /gal. Melts at 64°C and loses the seven waters of hydration at 90°C. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. Used for water or sewage treatment, as a fertilizer ingredient.

Hazards

Reactivity Alerts
none
Air & Water Reactions
Water soluble
Fire Hazard
No information available.
Health Hazard
INGESTION: abdominal pain, retching, diarrhea, dehydration, shock, pallor, cyanosis, rapid or weak pulse, shallow respiration, low blood pressure. (USCG, 1999)
Reactivity Profile
Weak inorganic reducing agents, such as FERROUS SULFATE, react with oxidizing agents to generate heat and products that may be flammable, combustible, or otherwise reactive.
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents

No information available.

Response Recommendations

Isolation and Evacuation
No information available.
Firefighting
No information available.
Non-Fire Response
No information available.
Protective Clothing
Mask if dust is present. (USCG, 1999)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
INGESTION: give milk immediately and then induce vomiting by stroking the pharynx with a blunt object such as a spoon handle. Gastric lavage with 1 pint of 5% aqueous solution of mono- or disodium phosphate if promptly available; otherwise use water. Get medical attention. (USCG, 1999)

Physical Properties

Chemical Formula:
  • FeSO4.7H2O
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: Not flammable (USCG, 1999)
Melting Point: data unavailable
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity: 1.9 at 59°F (USCG, 1999) - Denser than water; will sink
Boiling Point: data unavailable
Molecular Weight: 169.96 (USCG, 1999)
Water Solubility: data unavailable
Ionization Energy/Potential: data unavailable
IDLH: data unavailable

AEGLs (Acute Exposure Guideline Levels)

No AEGL information available.

ERPGs (Emergency Response Planning Guidelines)

No ERPG information available.

PACs (Protective Action Criteria)

Chemical PAC-1 PAC-2 PAC-3
Ferrous sulfate (7720-78-7) 8.2 mg/m3 41 mg/m3 250 mg/m3
Ferrous sulfate heptahydrate (7782-63-0) 15 mg/m3 170 mg/m3 990 mg/m3
(DOE, 2018)

Regulatory Information

EPA Consolidated List of Lists

Regulatory Name CAS Number/
313 Category Code		 EPCRA 302
EHS TPQ		 EPCRA 304
EHS RQ		 CERCLA RQ EPCRA 313
TRI		 RCRA
Code		 CAA 112(r)
RMP TQ
Ferrous sulfate 7720-78-7 1000 pounds
Ferrous sulfate 7782-63-0 1000 pounds

(EPA List of Lists, 2022)

CISA Chemical Facility Anti-Terrorism Standards (CFATS)

No regulatory information available.

OSHA Process Safety Management (PSM) Standard List

No regulatory information available.

Alternate Chemical Names