What Is Ferrous Sulfate Heptahydrate?

Ferrous sulfate heptahydrate, commonly known as green alum, has a chemical formula of FeSO ₄ · 7H ₂ O and a molecular weight of 278.05. Irritating to human respiratory tract, inhalation causes cough and shortness of breath. Irritating to eyes, skin and mucous membranes. Ingestion can cause weakness, abdominal pain, nausea, blood in the stool, damage to the lungs and liver, shock, and coma.

CAS No.

Ferrous sulfate 7782-63-0 ^[1]

Environmental hazards: Harmful to the environment and can cause pollution to water bodies.

Explosion hazard: This product is non-combustible and irritating.

Skin contact: Remove contaminated clothing and rinse with plenty of running water.

Eye contact: Raise eyelids and rinse with running water or saline. Seek medical attention.

Inhalation: Quickly leave the scene to fresh air. Keep your airways open. If breathing is difficult, give oxygen. If breathing stops, give artificial respiration immediately. Seek medical attention.

Ingestion: Rinse mouth with water and drink milk or egg white. Seek medical attention.

Dangerous characteristics:

Emergency treatment: Isolate leaking contaminated areas and restrict access. It is recommended that emergency workers wear dust masks and general work clothes. Do not touch the spill directly. Small leaks: Avoid dust, sweep up carefully, and collect in dry, clean, covered containers. Large spills: Collected for recycling or transported to a waste disposal site for disposal.

Precautions for operation: Closed operation, local exhaust. Prevent dust from being released into the workshop air. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that operators wear self-priming filter dust masks, chemical safety protective glasses, rubber acid and alkali resistant clothing, and rubber acid and alkali resistant gloves. Avoid generating dust. Avoid contact with oxidants and alkalis. Equipped with leakage emergency treatment equipment. Empty containers may be harmful residues.

Storage precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat sources. Protect from direct sunlight. The packaging must be sealed and protected from moisture. It should be stored separately from oxidants and alkalis. The storage area should be equipped with suitable materials to contain spills. It is very easy to be oxidized in the air.

Occupational exposure limit

China MAC (mg / m3): No standard

Former Soviet Union MAC (mg / m3): 2

TLVTN: 1mg (Fe) / m3

TLVWN: No standard set

Monitoring method:

Engineering control: closed operation, local exhaust.

Respiratory protection: When the dust concentration in the air exceeds the standard, you must wear a self-priming filter dust mask. Wear an air respirator for emergencies or evacuation.

Eye protection: Wear chemical safety goggles.

Body protection: Wear rubber acid and alkali resistant clothing.

Hand protection: Wear rubber acid and alkali resistant gloves.

Other protection: No smoking, eating and drinking in the workplace. Wash your hands before meals. After work, take a shower. Maintain good hygiene.

Disposal methods: Dispose by safe landfill. Reuse the container where it can be used or bury it in the prescribed place.

Precautions for transportation: The package should be complete at the time of shipment, and the loading should be secure. During transportation, ensure that the container does not leak, collapse, fall, or damage. It is strictly prohibited to mix and transport with oxidants, alkalis, and edible chemicals. During transportation, it should be protected from direct sunlight, rain and high temperature. The vehicle should be thoroughly cleaned after transportation. When transporting by road, follow the prescribed route.

Regulations and Regulations on the Safety Management of Chemical Dangerous Goods (promulgated by the State Council on February 17, 1987), Implementing Rules of the Regulations on the Safety Management of Chemical Dangerous Goods (Chemical [1992] No. 677), Regulations on the Safe Use of Chemicals in Workplaces ([1996] Labor The Ministry of Public Security No. 423) and other regulations have made corresponding provisions on the safe use, production, storage, transportation, loading and unloading of chemical dangerous goods.

It is used in the manufacture of iron salts, inks, iron oxide red and indigo, used as mordant, tanning agent, water purifier, wood preservative and disinfectant, etc .; it is used as fertilizer, herbicide and pesticide in agriculture.