MELAMINE

PRODUCT IDENTIFICATION

CAS NO. 108-78-1

MELAMINE

EINECS NO. C3N3(NH2)3
FORMULA 203-615-4
MOL WT. 126.12
H.S. CODE 2933.61

TOXICITY

Oral, rat LD50: 3161 mg/kg
SYNONYMS Cymel; 1,3,5-Triazine-2,4,6-triamine; cyanuramide;
cyanuric triamide; triaminotriazine; 2,4,6-triamino-1,3,5-triazine; cyanurotriamide; Teoharn; Theoharn; Virset 656-4; cyanurotriamine; 2,4,6-triamino-s-triazine; s-triaminotriazine; 2,4,6-triamino sym-triazine; 1,3,5-triazine-2,4,6(1H,3H,5H)triimine;

SMILES

Methylformate, Condensed water

CLASSIFICATION

 

GENERAL DESCRIPTION

MELAMINE also called Cyanuramide, or Triaminotriazine, a colourless, is a crystalline substance belonging to the family of heterocyclic organic compounds, which are used principally as a starting material for the manufacture of synthetic resins. Melamine is manufactured by heating dicyandiamide under pressure. Its most important reaction is the forming resinous compounds of high molecular weight, with formaldehyde. These resins form under the influence of heat but, once formed, are insoluble and infusible. Usually formulated with fillers and pigments, they are molded into dishes, containers, utensils, handles, and the like or used as laminating agents or coating materials for wood, paper, and textiles. Formica and Melmac are well-known trade names for products based on melamine resins. Butylated melamine resins, made by incorporating butyl alcohol into the melamine-formaldehyde reaction mixture, are fluids used as ingredients of paints and varnishes.

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

white, crystalline powder.

MELTING POINT 345 C (Decomposes)
BOILING POINT

 

SPECIFIC GRAVITY 1.573
SOLUBILITY IN WATER slightly
pH

 

VAPOR DENSITY 4.3

AUTOIGNITION

500 C

REFRACTIVE INDEX

 

NFPA RATINGS

 
FLASH POINT

 

STABILITY Stable under ordinary conditions

APPLICATIONS

Melamine-formaldehyde resins , Lamination , Adhesive agents, Tableware,  Flame retardant, Polyurethane foams, Paints, coating, paper, plastics,  Pigments, Thermosetting plastics
SALES SPECIFICATION

APPEARANCE

white powder

MELAMINE

99.9% min

MOISTURE

0.05% max

ASH

0.01% max

pH

7.5 ~ 9.5 (5% sol.)

COLOR, APHA

30max

PARTICLE DISTRIBUTION

90%(50 max) 100%(500 max)

TRANSPORTATION
PACKING 25kgs in bag and big bag
HAZARD CLASS  
UN NO.  

GENERAL DESCRIPTION OF TRIAZINE COMPOUNDS

Triazine is the chemical species of six-membered heterocyclic ring compound with three nitrogens replacing carbon-hydrogen units in the benzene ring structure. The names of the three isomers indicate which of the carbon-hydrogen units on the benzene ring position of the molecule have been replaced by nitrogens, called 1,2,3-triazine, 1,2,4-triazine, and 1,3,5-triazine respectively. Symmetrical 1,3,5-triazine is the common. Triazines are prepared from 2-azidocyclopropene through thermal rearrangement (1,2,3-triazine), from 1,2-dicarbonyl compound with amidrazone by condensation reaction (1,2,4-triazine) and from cyanic acid amide by trimerization (1,3,5-triazine). Pyridine is the aromatic nitrogen heterocycle compound having only one nitrogen, and diazines are with 2 nitrogen atoms and tetrazines are with 4 nitrogen atoms on the benzene ring system. Triazines are weak base. Triazines have much weaker resonance energy than  benzene, so nucleophilic substitution is preferred than electrophilic substitution. Triazines are basic structure of herbicides, examples are amitole (CAS #: 61-82-5), atrazine (CAS #: 1912-24-9), cyanazine (CAS #: 21725-46-2), simazine (CAS #: 122-34-9), trietazine (CAS #: 1912-26-1). Large volume of triazines are used in  the manufacture of resin modifiers such as melamine and benzoguanamine.  Melamine (1,3,5-Triazine-2,4,6-triamine) is reacted with formaldehyde to from a very durable thermoset resin. Benzoguanamine (2,4-Diamino-6-phenyl-1,3,5-triazine) is used to increase thermoset properties of alkyd, acrylic and formaldehyde resins. Triazines are also useful as chromophore groups in colorants and Chlorine attached in Triazine compounds undergo nucleophilic substitution reactions well with with hydroxyl groups in cellulose fibres. Some triazine family compounds are used in pharmaceutical industry as coupling agent for the synthesis of peptide in solid phase as well as solution and as side chain of antibiotics. Triazine compounds are used in formulating bactericide and fungicide. They are used as  preservatives in oil field applications. They are used as disinfectant, industrial deodorant and biocide in water treatment. They are used as a bleaching agents.
GENERAL DESCRIPTION OF FLAME RETARDANT AGENT
Flame Retardant are substances that can be chemically inserted into the polymer molecule or be physically blended in polymers after polymerization to suppress, reduce, delay or modify the propagation of a flame through a plastic materials. There are several classes of flame retardants; Halogenated Hydrocarbons (Chlorine and Bromine containing compounds and reactive flame retardants), Inorganic flame retardants ( Boron compounds, Antimony oxides, Aluminium Hydroxide, molybdenum compounds, zinc and magnesium oxides ), Phosphorous containing compounds (Organic phosphate esters, phosphates, halogenated phosphorus compounds and inorganic phosphorus containing salts).

Class of Flame Retardants

  • Inorganic
    • Metal hydroxides
      • Aluminium hydroxide
      • Magnesium hydroxide
      • Orthers
    • Antimony compounds
      • Antimony trioxide
      • antimony pentoxide
      • Sodium antimonate
      • Others
    • Boron compounds
      • Boric acid
      • Borax
      • Zinc borate
      • Others
    • Other metal compounds
      • Molybdenum compounds
      • Titanium compounds
      • Zirconium compounds
      • Zinc compounds
        • Zinc stannate
        • Zinc hydroxy-stannate
        • Others
      • Others
    • Phosphorus compounds
      • Red phosphorus
      • Ammonium polyphosphate
      • Others
    • Other inorganic flame retardants
      • ammonium sulfamate
      • ammonium bromide
      • Others
  • Halogenated organic
    • Brominated
      • Tetrabromobisphenol A
      • Decabromodiphenyl ether
      • Octabromobiphenyl ether
      • Tetrabromobiphenyl ether
      • Hexabromocyclododecane
      • Tribromophenol
      • Bis(tribromophenoxy) ethane
      • Tetrabromobisphenol A polycarbonate oligomers
      • Tetrabromobisphenol A epoxy oligomers
      • Others
    • Chlorinated
      • Chlorinated paraffins
      • Bis(hexachlorocyclopentadieno)cyclo-octane
      • Others
  • Organophosphoros
    • Non-halogenated compounds
      • phosphate esters
        • Ttrialkyl phosphates
        • Triaryl phosphates
        • Aryl-alkyl phosphates
        • Others
      • polyols
      • phosphonium derivatives
      • phosphonates
      • Others
    • Halogenated phosphates
      • Tris(1-chloro- 2-propyl) phosphate
      • Tris(2-chloroethyl) phosphate
      • Tris(2,3-dibromopropyl)phosphate
      • Others
  • Nitrogen-based
    • Polyurethanes
    • Polyamides
    • Melamine and its salts
    • Guanidine compounds
    • Others