108-78-1
Product Name:
Melamine
Formula:
C3H6N6
Synonyms:
2,4,6-Triamino-1,3,5-triazine;Melamine;sym-Triaminotriazine
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Melamine appears as colorless to white monoclinic crystals or prisms or white powder. Sublimes when gently heated. (NTP, 1992) |
|---|---|
| Color/Form | Monoclinic prisms |
| Boiling Point | Sublimes (NTP, 1992) |
| Melting Point | 653 °F (decomposes) (NTP, 1992) |
| Solubility | less than 1 mg/mL at 72 °F (NTP, 1992) |
| Density | 1.573 at 61 °F (NTP, 1992) - Denser than water; will sink |
| Vapor Density | 4.34 (NTP, 1992) - Heavier than air; will sink (Relative to Air) |
| Vapor Pressure | 50 mmHg at 599 °F (NTP, 1992) |
| LogP | log Kow = -1.37 |
| Autoignition Temperature | greater than 500 °F (NTP, 1992) |
| Decomposition | DANGEROUS; WHEN HEATED TO DECOMP, EMITS HIGHLY TOXIC FUMES OF /NITROGEN OXIDES AND HYDROGEN CYANIDE/. |
| Heat of Combustion | -1967 kJ/mol at 25 °C |
| Refractive Index | Index of refraction: 1.872 at 20 degC/D |
| Dissociation Constants | pKa = 5.0 |
| Kovats Retention Index | 1538 |
| Other Experimental Properties | Heat of sublimation = -121 kJ/mol at 25 °C |
| Chemical Classes | Nitrogen Compounds -> Triazines |
SAFETY INFORMATION
| Signal word | Warning |
|---|---|
| Pictogram(s) |
 Health Hazard GHS08 |
| Precautionary Statement Codes |
P201:Obtain special instructions before use. P202:Do not handle until all safety precautions have been read and understood. P280:Wear protective gloves/protective clothing/eye protection/face protection. P308+P313:IF exposed or concerned: Get medical advice/attention. P405:Store locked up. P501:Dispose of contents/container to..… |
COMPUTED DESCRIPTORS
| Molecular Weight | 126.12 g/mol |
|---|---|
| XLogP3 | -1.4 |
| Hydrogen Bond Donor Count | 3 |
| Hydrogen Bond Acceptor Count | 6 |
| Rotatable Bond Count | 0 |
| Exact Mass | 126.06539422 g/mol |
| Monoisotopic Mass | 126.06539422 g/mol |
| Topological Polar Surface Area | 117 Ų |
| Heavy Atom Count | 9 |
| Formal Charge | 0 |
| Complexity | 63.3 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Melamine appears as colorless to white monoclinic crystals or prisms or white powder. Sublimes when gently heated. (NTP, 1992)