antimony trioxide mechanism

Antimony trioxide: November 2008

Nov 23, 2008· Flame retardant mechanism of antimony trioxide. Antimony trioxide itself has no flame retardant function, however, when it is used together with halogenated compounds, the synergistic effect of the mixture creates the flame retardant properties.

Antimony Wikipedia

Antimony is a member of group 15 of the periodic table, one of the elements called pnictogens, and has an electronegativity of In accordance with periodic trends, it is more electronegative than tin or bismuth, and less electronegative than tellurium or is stable in air at room temperature, but reacts with oxygen if heated to produce antimony trioxide, Sb 2 O 3.

The exposure to and health effects of antimony

Antimony trioxide exposure is predominant in smelters. Mining and exposure via glass working, soldering, and brazing are also important. ... Antimony in conjunction with other metals may biologically alter several cellular defence mechanisms thus potentiating ... has composed a comprehensive account of the public health effects of antimony ...

Antimony Trioxide Formula, FlameRetardant, Uses, MSDS,

Antimony Trioxide Availability. It is found in nature as the minerals Valentinite and Senarmontite. Many commercial manufacturers produce Antimony Trioxide using stibnite ores (Antimony Trisulfide) or as a byproduct of lead smelting. Antimony Trioxide can also be produced using Antimony Trichloride, which is derived from Stibnite.

The Health Dangers of Antimony Global Healing Center ...

May 28, 2013· The Health Dangers of Antimony. Email. Print. Share. Last Updated on May 28, 2013. ... One compound — antimony trioxide — is even believed to be carcinogenic, and antimony poisoning has also been known to lead to AdamsStokes syndrome. Efforts to Reduce Exposure to Antimony.

ANTIMONY TRIOXIDE | SelfDecode | Genome Analysis

Antimony trioxide is the chemical compound with the formula Sb2O3. It is the most important commercial compound of antimony. It is found in nature as the minerals valentinite and senarmontite. Antimony is a metallic element with the chemical symbol Sb and atomic number 51. ... The mechanism of action of antimony trioxide remains unclear (T18 ...

Antimony Trioxide Toxicological Risks of Selected Flame ...

The subcommittee used that information to characterize the health risk from exposure to antimony trioxide. The subcommittee also identified data gaps and recommended research relevant for determining the health risk from exposure to antimony trioxide. ... indicating that clearance mechanisms were severely compromised. In some instances ...

reaction mechanism Why is antimony oxide used as a flame ...

Zinc borate, molybdic oxide, zinc oxide, and magnesium oxide can be used in conjunction with antimony oxide to augment char formation and decrease smoke. Replacement of the antimony oxide to meet a smoke requirement compromises the flame retardance. See also Flame retardant mechanism of antimony trioxide

Antimony Trioxide an overview | ScienceDirect Topics

Antimony trioxide. Antimony trioxide (ATO) is commonly used as a cosynergist with halogenated flame retardants to enhance their effectiveness. ... One mechanism is that antimony trioxide generates oxyhalide and trihalide compounds which can function as a source of halide radical interceptors in the vapor phase and over a wide temperature range.

Antimony trioxide Wikipedia

Antimony trioxide. Edit; Read in another language; Antimony(III) oxide is the inorganic compound with the formula Sb 2 O 3. It is the most important commercial compound of antimony. It is found in nature as the minerals valentinite and senarmontite.

Antimony and its inorganic compounds (inhalable fraction ...

Mechanism of action of antimony and its inorganic compounds. ... Antimony trioxide in decabromodiphenyl ether (1:8) was mixed with 13 % guinea pig fat to make 10 %, 25 % and 50 % mixtures in acetone/dioxane (1:1). Of these preparations, ml was applied to the skin (no further details) of 10 guinea pigs per group. ...

Flame(Fire) Retardant Additive Manufacture Supplier ...

Antimony halides appear to form an important link in the radical scavenging cycle during flame retardancy. Antimony trioxide(Sb2O3) and pentoxide(Sb2O5) are used along with halogen flame retardant additive or halogenated polymers due to their synergistic interaction arising from the formation of antimony trihalide

Antimony trioxide Wikipedia

Antimony trioxide. Jump to navigation Jump to search. Antimony(III) oxide Names IUPAC name. Antimony(III) oxide. Other names Antimony sesquioxide Antimonous oxide Flowers of Antimony. Identifiers CAS Number ... Antimony(III) oxide is the inorganic compound with the formula Sb 2 O 3.

Kinetics and Mechanism of Photopromoted Oxidative ...

Light (sunlight, ultraviolet, simulated sunlight) irradiation was used to initiate the dissolution of antimony trioxide (Sb 2 O 3).Dissolution rate of Sb 2 O 3 was accelerated and dissolved trivalent antimony (Sb(III)) was oxidized in the irradiation of light. The photopromoted oxidative dissolution mechanism of Sb 2 O 3 was studied through experiments investigating the effects of pH, free ...

Antimony trioxide (UK PID)

MECHANISM OF TOXICITY The mechanism of toxicity of antimony compounds is unclear but may involve disruption of thiol proteins via binding to sulphydryl groups (de Wolff, 1995). TOXICOKINETICS Absorption Antimony trioxide may be absorbed by inhalation and ingestion, though gastrointestinal absorption in man is poor.

Antimony | Sb PubChem

The concentraion of antimony (Sb) in the lungs of male rats (38,300 ug Sb/g) exposed to antimony trioxide was significantly greater than that in rats (25,000 ug/g) exposed to antimony trioxide.

FLAME RETARDANTS IN PRINTED CIRCUIT BOARDS …

FLAME RETARDANTS IN PRINTED CIRCUIT BOARDS Chapter 3 FINAL REPORT August 2015 ... antimony compounds (, antimony trioxide), ... This mechanism of action, known as ablation, is in a sense the solid phase parallel of liquid phase melting and dripping. A surface char layer is

Antimony Trioxide Flame Retardant, CAS 1309644, Sb2O3 ...

antimony trioxide, Sb2O3, 1309644 Description. Product Name: antimony trioxide. Equivalent to: Cas No. : 1309644. Molecular Weight: Application. Sb2O3 is used as a fire retardant in rubber, plastics, wire cable and other composites. It must be used in conjunction with a halogen source, for example, a brominated flame retardant.

Antimony oxide (Sb2O3) | O3Sb2 PubChem

The second phase had an approx halftime of 2040 days for antimony trioxide and antimony dust. ... but it could not be explained by oxidative mechanisms. Positive response to antimony trioxide was observed in the in vitro cytogenetic assay using isolated human peripheral lymphocytes. ANIMAL STUDIES: Antimony trioxide was well tolerated by rats ...

IJERPH | Free FullText | Antimony Toxicity | HTML

Antimony toxicity occurs either due to occupational exposure or during therapy. Occupational exposure may cause respiratory irritation, pneumoconiosis, antimony spots on the skin and gastrointestinal symptoms. In addition antimony trioxide is possibly carcinogenic to humans. Improvements in working conditions have remarkably decreased the incidence of antimony toxicity in the workplace.

Monograph on Antimony Trioxide

Oct 19, 2018· RoC Monograph on Antimony Trioxide 10/19/18 i Foreword The National Toxicology Program (NTP) is an interagency program within the Public Health Service (PHS) of the Department of Health and Human Services (HHS) and is headquartered at ... mechanisms, and …

ATSDR Toxicological Profile: Antimony

Aug 14, 2018· Mechanisms of action Hazard Identification and Minimal Risk Levels Toxicities Mediated through the Neuroendocrine Axis ... . 2017. Toxicological profile for antimony.(Draft for Public Comment). Atlanta, GA: Department of Health and Human Services, Public Health Service. Disclaimer.

Synthesis of antimony trioxide

The reaction proceeds and antimony trioxide is formed. The obtained precipitate of antimony trioxide is filtered and washed with hot water until free from sulfates. antimony trioxide. Finally, antimony trioxide is dried at a low temperature yielding the white powder. Preparation of antimony trioxide from antimony trisulfide

10 Antimony Trioxide | Toxicological Risks of Selected ...

ANTIMONY TRIOXIDE 230 TABLE 10â 1 Physical and Chemical Properties of Antimony Trioxide Characteristic Value Reference Chemical formula Sb2O3 Lide 1991â 1992 CAS registry 1309â 64â 4 Lide 1991â 1992 Synonyms diantimony trioxide, flowers of antimony Budavari et al. 1989 Molecular weight g/mol Lide 1991â 1992 Physical state Crystal ...