Antimony Trioxide Overview
TCC's Antimony Trioxide is a toxic, inorganic compound that is primarily used as a flame retardant in combination with halogenated materials. Produced as a white, odorless crystalline powder, TCC ships the product in bulk, in 50 lb. and 2,000 lb. bags.
China is the leading producer of Antimony Trioxide, although it is also made in the United States, Mexico, South Africa, Bolivia, Russia, Europe and Japan.
Typical applications for Antimony Trioxide include flame retardant for use in plastics, rubber, paints, paper, textiles, and electronics; polyethylene terephthalate polymerization catalyst; a clarifying agent for glass; an opacifier for porcelain and enamel; and a white pigment for paint.
About Antimony Trioxide
TCC's Antimony Trioxide, also known as antimony oxide or Sb2O3, is the most widely produced compound of elemental antimony. It is found in nature as the minerals valentinite and senarmontite. Like most polymeric oxides, Sb2O3 dissolves in aqueous solutions only with hydrolysis.
Global production of Antimony Trioxide in 2005 was 120,000 tons, an increase from 112,600 tons in 2002. China produces the largest share (47%), followed by US/Mexico (22%), Europe (17%), Japan (10%), and South Africa (2%). Other countries account for an additional 2%.
Antimony Trioxide is mainly produced via the smelting of stibnite ore, which is oxidized to crude Sb2O3 using furnaces operating at approximately 850° C to 1,000° C.
Crude Sb2O3 is purified by sublimation, which allows it to be separated from the more volatile arsenic trioxide. This step is relevant because antimony ores commonly contain significant amounts of arsenic.
Antimony oxide is also obtained via antimony trichloride, which can be obtained from stibnite.
Antimony Trioxide is an amphoteric oxide, dissolving in alkaline solution to give antimonites and in acid solution to give a rang of polyantimonous acids. It can be readily oxidized to antimony pentoxide and related antimony (V) compounds, but it is also easily reduced to antimony, sometimes with production of stibine.
TCC's Antimony Trioxide can be dampened with a variety of media including, but not limited to, ethylene glycol, diisodecyl phthalate (DIDP), and mineral oil.
Applications using Antimony Trioxide
TCC's Antimony Trioxide, also known as antimony oxide (Sb2O3), is the most widely produced compound of elemental antimony.
Typical applications for Antimony Trioxide include flame retardant for use in plastics, rubber, paints, paper, textiles, and electronics; polyethylene terephthalate polymerization catalyst; a clarifying agent for glass; an opacifier for porcelain and enamel; and a white pigment for paint.
When used as a flame retardant, Antimony Trioxide is often used in combination with halogenated compounds. Antimony Trioxide acts as a synergist to enhance the activity of the halogenated flame retardant. In the absence of Antimony Trioxide about twice as much halogenated compound would be needed to reach the same level of flame retardancy.
Product Specification - Antimony Trioxide
| Product: | Antimony Trioxide HT |
| CAS No: | 1309-64-4 |
| Molec. Formula: | Sb2O3 |
| Item | Specification | Typical |
| Antimony Oxide | 99.5% min | 99.5% |
| Antimony (Sb) | 83.3% min | 83.3 |
| Arsenic (As) | 0.2% max | 0.075% |
| Lead (Pb) | 0.1% max | 0.050% |
| Selenium | 50 ppm max | <50 ppm |
| Specific Gravity | 5.2-5.6 | 5.2-5.6 |
| Residue on 325 mesh (% max/min) | 0.5% | <0.1% |
| Average Particle Size (microns) | 1.1-1.8 | 1.2-1.6 |
| Tint Strength: | High |
| Color: | Excellent White |
| Weight per Cubic Ft.: | 44 to 55lbs |
Shipping & Ordering Information
TCC's Antimony Trioxide is available for shipment throughout the continental United States with one (1) week lead time.
Please call (401) 423-3100 for details. The product is delivered in 50 lb. and 2,000 lb. bags.
Contact The Chemical Company 19 Narragansett Ave. Post Office Box 436 Jamestown, RI 02835-0436 Telephone: (401) 423-3100 FAX: (401) 423-3102 Robert N. Roach III "Robb" President Cell: (401) 864-3111 Email: robb@thechemco.com
Material Safety Data Sheet
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