{"hq_id":"hq-c-ino-000223","name":"Sodium thiosulfate","context":"human_adult","risk_level":"low","schema":"legacy","note":"Synthesis unavailable: compound lacks vectorizable regulatory classifications. Raw safety data returned.","data":{"risk_level":"low","summary":"Sodium thiosulfate is a low-hazard inorganic salt with two principal use cases: aquarium and drinking-water chlorine/chloramine neutralization (1 mg Na2S2O3 neutralizes ~7.4 mg Cl2 stoichiometrically), and emergency medical use as the second component of the cyanide antidote (paired with sodium nitrite or hydroxocobalamin). FDA-approved as a medication on the WHO Essential Medicines list. Generally recognized as safe at typical aquarium dosing (a few mg/L); large oral doses may cause GI upset and electrolyte disturbance. Rare reports of hypotension at IV antidote doses. Pentahydrate form (CAS 10102-17-7) is the most common commercial preparation; this record covers the anhydrous canonical form.","source_refs":["src_pubchem","src_phase59_batch"]},"meta":{"synthesis_version":"n/a","timestamp":"2026-07-27T04:55:44.685Z"},"_notice":"ALETHEIA output is reference data, not professional advice. Not a substitute for primary agency sources or qualified professionals. See https://aletheia.holisticquality.io/disclaimer.","_disclaimer_url":"https://aletheia.holisticquality.io/disclaimer","available_contexts":["human_adult"]}