Sodium biselenite

H300 Fatal if swallowed; H312 Harmful in contact with skin; H315 Causes skin irritation; H319 Causes serious eye irritation; H331 Toxic if inhaled; H335 May cause respiratory irritation; H373 Causes damage to organs through prolonged or repeated exposure; H410 Very toxic to aquatic life with long-lasting effects.

P260 Do not breathe dust/fume/gas/mist/vapors/spray; P264 Wash skin thoroughly after handling; P270 Do not eat, drink, or smoke when using this product; P271 Use only outdoors or in a well-ventilated area; P273 Avoid release to the environment; P280 Wear protective gloves/protective clothing/eye protection/face protection; P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician; P302+P352 IF ON SKIN: wash with plenty of soap and water; P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing; P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing; P332+P313 IF SKIN irritation occurs: Get medical advice/attention.