| HEXAMETHYLPHOSPHORIC TRIAMIDE | ||
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PRODUCT IDENTIFICATION |
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| CAS NO. | 680-31-9 |
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| EINECS NO. |
211-653-8 | |
| FORMULA |
[(CH3)2N]3PO | |
| MOL WT. | 179.20 | |
| H.S. CODE | ||
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TOXICITY |
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| SYNONYMS | Hexametapol; Tris(dimethylamino)phosphorus oxide; | |
| Hempa; Hexamethylphosphoramide; Hexamethylphosphoric acid triamide; hexamethylphosphorotriamide; N,N,N,N,N,N-hexamethylphosphoric triamide; Phosphoric acid hexamethyltriamide; Phosphoric Tris(dimethylamide); Phosphoryl hexamethyltriamide; Tris(dimethylamino)phosphine oxide; HMPA; HMPT; HPT; | ||
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SMILES |
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CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE | clear to yellow liquid | |
| MELTING POINT | 5 -7 C | |
| BOILING POINT | 230 - 232 C | |
| SPECIFIC GRAVITY | 1.02 - 1.03 | |
| SOLUBILITY IN WATER |
Miscible (soluble in most organic liquids) | |
| pH | ||
| VAPOR DENSITY | 6.18 | |
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AUTOIGNITION |
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NFPA RATINGS |
Health: 1; Flammability: 2; Reactivity: | |
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REFRACTIVE INDEX |
1.458 | |
| FLASH POINT |
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| STABILITY | Stable under ordinary conditions. | |
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APPLICATIONS |
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| Hexamethylphosphoric Triamide is a (high boiling point) strong aprotic solvent which does not contain an O-H bond but contains a bond that has a large bond dipole. Most dipolar aprotic solvents contain multiple bond between carbon and either oxygen or nitrogen such as acetone [(CH3)2C=O]. It hydrolyzes slowly in acids. It is used as a processing solvent for polymers and as a selective solvent for gases. It is used as a polymerisation catalyst and as a thermal and UV stabilizer for polystyrenes and pvc. | ||
| SALES SPECIFICATION | ||
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APPEARANCE |
clear to yellow liquid | |
| ASSAY |
99.0% min | |
|
Cl |
0.1% max | |
| MOISTURE |
0.5% max | |
| TRANSPORTATION | ||
| PACKING | 200kgs in drum | |
| HAZARD CLASS | 9 (Packing Group: III) | |
| UN NO. | 3082 | |
| OTHER INFORMATION | ||
| Hazard Symbols: T, Risk Phrases: 45-46, Safety Phrases: 53-45 | ||
