Tris-1-(2-methylaziridinyl)phosphine oxide

Executive standard: GJB 1959-94

English alias: Tris(2-methylaziridinyl) phosphine oxide   

English abbreviation: MAPO

CAS RN: 57-39-6

Molecular Weight: 215.23

Molecular formula: C₉H₁₈N₃OP

Structure formula:

1. Physical and chemical properties:

1.1 Odor: Foul smell with rotten green grass.

1.2 Solubility: Freely dissolved in organic solvents, such as methylene dichloride, chloroform, , etc. Slightly soluble in water.

1.3 Boiling point: 90-92℃, 0.15-0.3mmHg

1.4 Stability: Decomposing temperature is 170℃. It will be decomposed in any acid. The polymerization occurs when contacted with acidic material or impurities containing active hydrogen. The copolymerization and cross-linking can be also taken place when contacted with the compounds containing two or more than two active hydrogen.

2. Technical indexes:

3. Application: MAPO has been used as cross-linking agent and curing agent on the cladding layers of  resin to heighten the capabilities of elasticity and ballistic in propellant. It works well for the application of AP-based oxidizer in HTPB propellant.

4. Safety instructions: Toxic. Operation must be installed with rubber gloves, a respirator and eye protection by wearing protective clothing to avoid contacting with skin, eyes and clothing.

5. Packing: Two plastic casks in a wooden case. Net Weight: 10 kg/cask; 20 kg/case.

6. Storage: Stored in a cool, ventilated place. Casks should be sealed with nitrogen. Avoid heat and exposure.The shelf life is 12 months after manufacturer date. It is still available if retest result is qualified after expire date.

7. Transportation: Code of hazardous goods is 61120. Keep upright when transported, avoid violent collision and exposure.