Molekula
Tris(2-methyl-1-aziridinyl)phosphine oxide (MAPO)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Tris(2-methyl-1-aziridinyl)phosphine oxide (MAPO) is a highly reactive organophosphorus compound primarily used as a cross-linking agent in resins, adhesives, and coatings to enhance durability and chemical resistance. It is also employed in the production of flame-retardant materials and as a curing agent for epoxy systems. MAPO has a CAS number of 57-39-6, a molecular formula of C9H18N3OP, and a molecular weight of 215.23 g/mol. It is stored at ambient conditions but requires careful handling due to its hazardous nature, indicated by the signal word "Danger." Molekula supplies Tris(2-methyl-1-aziridinyl)phosphine oxide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Properties | Conforms |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 142 °C |
| Transport Class | 6.1 |
| Packing Group | II |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90029818 |
| CAS Number | 57-39-6 |
| IUPAC Name | 1-bis(2-methylaziridin-1-yl)phosphoryl-2-methylaziridine |
| EC Number | 200-326-5 |
| Molecular Formula | C9H18N3OP |
| Molecular Weight | 215.23 |
| Exact Mass | 215.1187 |
| SMILES | CC1CN1P(=O)(N2CC2C)N3CC3C |
| InChIKey | AVUYXHYHTTVPRX-UHFFFAOYSA-N |
| InChI | InChI=1S/C9H18N3OP/c1-7-4-10(7)14(13,11-5-8(11)2)12-6-9(12)3/h7-9H,4-6H2,1-3H3 |
| PubChem CID | 60976 |
| UN Number | UN3278 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2933.99.97.01 |
| Tariff Code | 2933998090 |
Safety & GHS
-
Toxic
GHS06
-
Serious Health Hazard
GHS08
Hazard statements
- H301 Toxic if swallowed
- H304 May be fatal if swallowed and enters airways
- H310 Fatal in contact with skin
- H330 Fatal if inhaled
- H340 May cause genetic defects
- H361f Suspected of damaging fertility.
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P310 Immediately call a POISON CENTER or doctor/physician
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Aziridine, 1,1',1''-phosphinylidynetris(2-methyl-
- MAPO
- Metapa
- Metapoxide
- METEPA
- Methaphoxide
- Methyl aphoxide
- Tris(1-methylethylene)phosphoric triamide
- Tris(2-methyl-1-aziridinyl)phosphine oxide
- Tris(methylaziridinyl)phosphine oxide
Frequently asked questions
What is Tris(2-methyl-1-aziridinyl)phosphine oxide (MAPO) commonly used for?
MAPO is primarily used as a **crosslinking agent** in epoxy resins, adhesives, and coatings to improve mechanical and thermal properties.
What is the chemical formula and molecular weight of MAPO?
The formula is **C₉H₁₈N₃OP**, and the molecular weight is **215.23 g/mol**.
How should MAPO be stored?
Store MAPO at **ambient temperature** in a tightly sealed container, away from moisture and incompatible substances.
What purity grades of MAPO does Molekula supply?
Molekula supplies MAPO in **technical grade** (typically ≥95% purity) for industrial applications.
Can Molekula supply MAPO in bulk quantities?
Yes, MAPO is available in **bulk quantities** (e.g., drums, IBCs) for large-scale industrial use—contact us for specific packaging options.
What documentation comes with a MAPO order?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a packing list.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.