1-Aziridinyl phosphine oxide (tris)
- tris(1-Aziridinyl)phosphine oxide
- Tri(aziridin-1-yl)phosphine oxide
An aqueous solution of a colorless crystalline solid.
Flame retardant for cotton, chemosterilant for insects, pesticide for mites & ticks, photographic emulsion hardener, agent in the permanent press treatment of cotton, agent in textile dyeing, & agent for polymer stabilization are former uses.
Registry Numbers and Inventories.
Agricultural Chemical and Pesticide; Tumorigen; Drug; Mutagen; Reproductive Effector
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
90 - 91 (0.3 torr)
1.225 g/cm3 (25 C)
Solubility in water
1.5107 (25 C)
Hazards and Protection.
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protective clothing and gloves to prevent contact with skin; goggles.
Wear positive pressure self-contained breathing apparatus (SCBA).
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Apply water spray or mist to knock down vapors. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Absorb bulk liquid with fly ash, cement powder, or commercial sorbents. Water spill: Use natural barriers or oil spill control booms to limit spill travel. Remove trapped material with suction hoses.
May react with aqueous solutions of acids or strong bases.
Decomposition in acid soln with formation of aziridine.
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Solid streams of water may be ineffective. Use alcohol foam, dry chemical or carbon dioxide.
Combustible material: may burn but does not ignite readily.
Containers may explode when heated.
Phosphoric acid mist may form in fire. oxides of nitrogen may form.
The toxological properties of this substance have not been fully investigated.
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Effects of contact or inhalation may be delayed.
Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact.
Only symptomatic and supportive measures are available.
Remove victim to fresh air.
Flush with water at once, followed by vinegar and dilute hydrogen peroxide.
Flush with water at once for at least 15 min.; get medical attention.
USCG CHRIS Code
Std. Transport #