Melamine Cas 108-78-1

Product Name: Melamine
Synonyms: 2,4,6-TRIAMINO-1,3,5-TRIAZINE FOR SYNTHE;1,3,5-Triazine-2,4,6-triamine (Melamine);MELAMINE(P);Melamine, synthesis grade;Melamine 5g [108-78-1];Melamine,2,4,6-Triamino-1,3,5-triazine, sym-Triaminotriazine;Melamine (250 mg) (2,4,6-Triamino-1,3,5-triazine);1,3,5-Triazin-2,4,6-triaMine
CAS: 108-78-1
MF: C3H6N6
MW: 126.12
EINECS: 203-615-4
Product Categories: Building Blocks;Chemical Synthesis;Amines;Aromatics;Heterocyclic Building Blocks;Triazines;Heterocycles;Organics;Bases & Related Reagents;Nucleotides;Fine chemical
Mol File: 108-78-1.mol
Melamine Structure
Melamine Chemical Properties
Melting point >300 ®C (lit.)
Boiling point 224.22®C (rough estimate)
density 1.573
vapor pressure 66.65 hPa (315 ®C)
refractive index 1.872
Fp >110®C
storage temp. no restrictions.
solubility water: soluble25mg/mL, clear to slightly hazy, colorless
pka 5(at 25℃)
form Fine Crystalline Powder
color White
PH 7-8 (32g/l, H2O, 20℃)
Water Solubility 3 g/L (20 ºC)
Merck 14,5811
BRN 124341
Stability: Stable. Incompatible with strong acids, strong oxidizing agents. Nonflammable.
Description Melamine-formaldehyde resin (MFR) is an active ingredient of strong (reinforced) plasters. Sensitization was reported in a plaster-room technician, who applied resin-reinforced pIaster casts, and in dental technicians. MFR was contained in a strong dental pIaster used for mouldings. Used as a textile finish res in, it was also found to be an allergen in a women who replaced clothes in a store. MFR also releases formaldehyde, which may be the sensitizer.
Chemical Properties White Solid
Chemical Properties Melamine is a white crystalline solid
Uses A compound that forms synthetic resins with formaldehyde
Uses Forms synthetic resins with formaldehyde.
Uses It is used to make high-pressure laminating resins (e.g., decorative countertops), molded compounds (e.g., dinnerware), and surface coating resins (e.g., appliance finishes and automotive topcoats). Additional major products are textile and paper treatment resins. Miscellaneous uses include adhesive resins for gluing lumber, plywood, and flooring, and resins for leather tanning agents. Melamine, melamine cyanurate, other melamine salts, and guanidine compounds are currently the most used group of nitrogencontaining flame retardants. Melamine is used as a flame retardant additive for polypropylene and polyethylene. Melamine cyanurate is employed commercially as a flame retardant for polyamides and terephthalates.
Production Methods The compound now is synthesized from urea.
Definition ChEBI: A trimer of cyanamide, with a 1,3,5-triazine skeleton.
Definition A white solid organic compound whose molecules consist of a sixmembered heterocyclic ring of alternate carbon and nitrogen atoms with three amino groups attached to the carbons. Condensation polymerization with methanal or other aldehydes produces melamine resins, which are important thermosetting plastics.
Definition melamine: A white crystalline compound,C3N6H6. Melamine is a cycliccompound having a six-memberedring of alternating C and N atoms,with three NH2 groups. It can becopolymerized with methanal to givethermosetting melamine resins,which are used particularly for laminatedcoatings.
Production Methods Melamine is prepared almost exclusively by the urea process—the action of ammonia on urea. It is produced worldwide.
General Description Colorless to white monoclinic crystals or prisms or white powder. Sublimes when gently heated.
Air & Water Reactions Insoluble in water.
Reactivity Profile Melamine is incompatible with strong oxidizing agents and strong acids . Neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides.
Hazard Toxic by ingestion, skin, and eye irritant. Questionable carcinogen.
Fire Hazard Literature sources indicate that Melamine is nonflammable.
Contact allergens Melamine-formaldehyde resin (MFR) results from condensation of melamine and formaldehyde. It is anactive ingredient of strong (reinforced) plasters, such as industrial or some dental plasters used for molding.It is also used as a textile finish resin. MFR acts as an allergen generally because of formaldehyde releasing (see Chap. 40)
Safety Profile Moderately toxic by ingestion and intraperitoneal routes. An eye, skin, and mucous membrane irritant. Causes dermatitis in humans. Questionable carcinogen with experimental carcinogenic and tumorigenic data. Experimental reproductive effects. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx and CN-.
Potential Exposure Manufactured from urea, melamine is used in the manufacture of plastics, melamineformaldehyde resins; rubber, synthetic textiles; laminates, adhesives, and molding compound
Carcinogenicity A bioassay of melamine was conducted in rats and mice by NTP. Male F344 rats and B6C3F1 mice were administered melamine in their diets at concentrations of 2250 or 4500 ppm daily for 103 weeks.Female rats were fed 4500 or 9000 ppm melamine. At the end of 111 weeks, surviving animals were killed and examined.
Purification Methods Crystallise Melamine from water or dilute aqueous NaOH. It sublimes at ~240o on prolonged heating. [Beilstein 26 I 74, 26 II 132, 26 III/IV 1253.]
Incompatibilities Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Melamine neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents such as hydrides, nitrides, alkali metals, and sulfides.