Agent Name

Fremy's salt

Alternative Name

Potassium nitrosodisulfonate

CAS Number

14293-70-0

Formula

N-O7-S2.2K

Major Category

Nitrogen Compounds

Synonyms

Dipotassium nitrosodisulfonate; Fremys salt; Potassium disulfonate nitroxyl; Potassium nitrosodisulfonate; Potassium nitrosyl sulfonate; Potassium nitrosyldisulfonate; Potassium peroxylaminedisulfonate; Dipotassium nitrosodisulphonate; Nitrosodisulfonic acid, dipotassium salt; [ChemIDplus] Nitrosodisulfonic acid potassium salt (1:2); [Merck Index] UN2813

Category

Other Nitrogen Compounds

Description

Yellow-orange or orange-brown solid; [Merck Index] Yellow-orange powder; [Sigma-Aldrich MSDS]

Sources/Uses

Used as a reagent for oxidation and as an EPR (nuclear reactor) standard; [Merck Index]

Comments

Intravenous LD50 (mouse) = 100 mg/kg; [RTECS] Reacts violently with water evolving flammable gases that may ignite spontaneously; Harmful by ingestion, inhalation, and skin absorption; May induce methemoglobinemia; [Sigma-Aldrich MSDS]

Exposure Assessment
Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Water-reactive solid, n.o.s."

Adverse Effects
Methemoglobinemia

Methemoglobinemia, Secondary

Links to Other NLM Databases
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