Inorganic Reducing Agents

Nonflammable.

Compounds in this class react with oxidizing agents to generate heat and products that may be flammable, combustible, or otherwise reactive. Their reactions with oxidizing agents may be violent. Sulfites and hydrosulfites (dithionites) can react explosively with strong oxidizing agents. Sulfites generate gaseous sulfur dioxide in contact with oxidizing acids and non-oxidizing acids.

Most are toxic by ingestion; degree varies widely.

Organometallic compounds are reducing agents, but are not included in this group; they are regarded as organic and separated in the Organometallics group. Chlorosilanes are excluded from this group and put in the Chlorosilanes group. Elemental metals are classified in the three Metals groups. However, sulfur and other non-metallic, elemental reducing agents appear here.

Ammonium bisulfite, ammonium sulfite, ammonium thiosulfate, arsenic sulfide, arsenic trisulfide, calcium dithionite, chromous chloride, ferrous chloride, ferrous oxalate.