diarsenic trioxide; arsenic trioxide

diarsenic trioxide; arsenic trioxide is corrosive to skin, eyes, or metals. Store in acid-resistant or alkali-resistant cabinets as appropriate. Do not store in metal containers. Secondary containment (drip trays) is required. Segregate from incompatible substances such as strong oxidisers.

diarsenic trioxide; arsenic trioxide has acute toxicity (oral, dermal, or inhalation) classified as Category 1–3. Access to this substance must be restricted to trained personnel. Store in a locked, well-ventilated area. Exposure monitoring and medical surveillance may be required under OSHA 29 CFR 1910.1000 or equivalent regulations.

diarsenic trioxide; arsenic trioxide is classified as potentially carcinogenic. Exposure must be minimised using engineering controls (local exhaust ventilation, closed systems). Biological and medical monitoring may be required. Refer to the full Safety Data Sheet (SDS) Section 8 for occupational exposure limits.

diarsenic trioxide; arsenic trioxide is hazardous to the aquatic environment. Do not allow this substance to enter drains, waterways, or soil. Spills must be contained immediately using appropriate absorbent material. Disposal must comply with local environmental regulations — consult the SDS Section 13 for guidance on waste treatment.

This substance carries the signal word DANGER, indicating the more severe hazard categories under GHS/CLP. Facilities handling diarsenic trioxide; arsenic trioxide should ensure a written hazard communication programme, including current SDS, employee training records, and GHS-compliant labelling on all containers.