| PHYSICAL AND CHEMICAL PROPERTIES |
| PHYSICAL STATE |
a number of allotropic forms |
| MELTING POINT |
44 C (white), 590 C (red) |
| BOILING POINT |
280 C (white), sublimes (red) |
| SPECIFIC GRAVITY |
1.82 (white), 2.34 (red), 2.70 (black) |
| SOLUBILITY IN WATER |
insoluble |
| NFPA RATINGS |
Health: 3 Flammability: 0 Reactivity: 1 |
| FLASH POINT |
30 C(white), 260 C(red) |
| STABILITY |
Stable under ordinary conditions |