ANTIMONY TRIOXIDE

PRODUCT IDENTIFICATION

CAS NO. 1309-64-4

ANTIMONY TRIOXIDE

EINECS NO. 215-175-0
FORMULA SB2O3 (Sb4O6)
MOL WT. 291.52

HS CODE

282580
TOXICITY Oral rat LD50: > 20 g/kg
SYNONYMS Antimony Peroxide; CI: 77052; CI Pigment White 11;
Dechlorane A-O; Antimony white; Antimonius Oxide; Antimony (III) Oxide; Bianitmony Trioxide; Flowers of Antimony
SMILES Antimony  (7440-36-0)

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE Odourless White Crystalline Powder
MELTING POINT

652 C

BOILING POINT 1570 C
SPECIFIC GRAVITY 5.2
SOLUBILITY IN WATER Slightly soluble
pH Amphoteric
VAPOR DENSITY  

AUTOIGNITION

 

NFPA RATINGS

Health: 2; Flammability: 0; Reactivity: 0

REFRACTIVE INDEX

 

FLASH POINT

 

STABILITY Stable under ordinary conditions

APPLICATIONS

Flame retardant for wide range of plastics, rubbers, paper and textiles . Catalyst in PET production. Activator in glass industry. Flocculant in Titanium Dioxide production. Paints and Adhesives industries. Pigments, Ceramic frites

SALES SPECIFICATION

FRAME RETARDANT GRADE

CATALYST GRADE

APPEARANCE

White Powder

Sb2O3

99.5% min

99.5% min

As2O3 / As

0.06% max

0.05% max

PbO / Pb

0.1% max

0.05% max

Fe2O3/ Fe

0.006% max

0.003% max

CuO

0.002% max

-

Se

0.005% max

-

WHITENESS

95% min

95% min

MEAN PARTICLE SIZE

0.5µm

TRANSPORTATION
PACKING 25kgs , 1mt in Bag
HAZARD CLASS 6.1 (Packing Group: III)
UN NO. 1549
GENERAL DESCRIPTION OF FLAME RETARDANT AGENT
Flame Retardant are substances that can be chemically inserted into the polymer molecule or be phisically 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
OTHER INFORMATION

Antimony trioxide and pentoxide don't react as flame retardants directly. They are used as synergists to enhance the activity of halogenated flame retardants by stepwise releasing the halogenated radicals to retard gas phase chain reaction of flame spread.