Bariumbromat
BARIUM BROMATE · barium(2+),dibromate · Bromicacid,bariumsalt · Bisbromic acid barium salt · BARIUM BROMATE CRYSTALLINE · BARIUM BROMATE ISO 9001：2015 REACH
Identifikatoren & physikalische Daten
| CAS No. | 13967-90-3 |
|---|---|
| Summenformel | Ba(BrO3)2 |
| Durchschnittliche Molmasse | 393,13 g/mol |
| Monoisotopische Masse | 391,71140912 g/mol |
| SMILES | [Ba+2].[O-][Br+2]([O-])[O-].[O-][Br+2]([O-])[O-] |
| InChIKey | VEASZGAADGZARC-UHFFFAOYSA-L |
| PubChem CID | 61706 |
| EC No. | 237-750-5 |
| DTXSID | DTXSID10890671 |
| Lokaler Name | Bariumbromat |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 114 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 6 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 9 |
| Formalladung | 0 |
| Komplexität | 36,5 |
| Physical Description | Barium bromate appears as a white crystalline solid or powder. Slightly soluble in water and denser than water. Very toxic by ingestion or inhalation. Fire hazard when in contact with organic materials and may explode when heated above 300 °F. Used as a corrosion inhibitor and to manufacture other chemicals. |
| Dichte | 3,99 g/cm3 |
| Löslichkeit | soluble in acetoneg/100g solution H2O: 0.286 (0°C), 0.788 (25°C)5.39 (99.65°C)equilibrium solid phase Ba(BrO3)2 [KRU93] |
| Farbe | White or colorless crystals or crystalline powder |
| Merck | 13,970 |
| CAS Datenbank | 13967-90-3(CAS DataBase Reference) |
| EPA chemische Informationen | Bromic acid, barium salt (13967-90-3) |
Sicherheit & Vorschriften
| GHS-Einstufung | DangerH272 (100%): May intensify fireoxidizer [Danger Oxidizing liquidsOxidizing solids]P210, P220, P261, P264, P270, P271, P280, P301+P317, P304+P340, P317, P330, P370+P378, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 44 reports by companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies. |
|---|---|
| Regulatorische Informationen | The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.) |
| DOT-Kennzeichnung | Oxidizer Poison |
| Brandgefahren | Excerpt from ERG Guide 141 [Oxidizers - Toxic]:· These substances will accelerate burning when involved in a fire. |
| Gesundheitsgefahren | Excerpt from ERG Guide 141 [Oxidizers - Toxic]:· Toxic by ingestion. |
| DOT-Nummer und Handbuch | 2719 141 |
| Reaktive Gruppe | Oxidizing Agents, Strong |
| Reactivity Alerts | Strong Oxidizing Agent |
| Reactivity Profile | BARIUM BROMATE is an oxidizing agent. May react violently with combustibles and reducing agents such as textiles, oil, fat, sugar, sawdust, ammonium salts, sulfur, carbon, phosphorus, metal powders and sulfides. A combination of finely divided aluminum with finely divided barium bromate can explode by heat, percussion, or friction [Mellor 2:310 1946-47]. |
| DOT Hazard Classification | Barium bromateUN2719Div 5.1 Oxidizer (49 eCFR § 173.127)PG II: the degree of danger presented by the material is medium |
| Air and Water Reactions | Slightly soluble in water. |
| Hazard Classes and Categories | Ox. Sol. 2 (100%) |
| Brandbekämpfung | Excerpt from ERG Guide 141 [Oxidizers - Toxic]: |
| Freisetungsmaßnahmen | · CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.· Keep combustibles (wood, paper, oil, etc.) away from spilled material. |
| Erste Hilfe | Excerpt from ERG Guide 141 [Oxidizers - Toxic]:General First Aid: |
| Expositionsschutz und Persönliche Schutzausrüstung | · Wear positive pressure self-contained breathing apparatus (SCBA). |
| Freisetung ohne Brand | Excerpt from ERG Guide 141 [Oxidizers - Toxic]: |
| Isolation and Evacuation | Excerpt from ERG Guide 141 [Oxidizers - Toxic]:Immediate precautionary measure |
| Minimum Risk Level | Intermediate Oral: 0.2 mg/kg/day (Barium) (L134) Chronic Oral: 0.2 mg/kg/day (Barium) (L134) |
| Personal Protective Equipment (PPE) | Excerpt from ERG Guide 141 [Oxidizers - Toxic]: |
| Emergency Response Planning Guidelines | Small Fire |
| Treatment | EYES: irrigate opened eyes for several minutes under running water. INGESTION: do not induce vomiting. Rinse mouth with water (never give anything by mouth to an unconscious person). Seek immediate medical advice. SKIN: should be treated immediately by rinsing the affected parts in cold running water for at least 15 minutes, followed by thorough washing with soap and water. If necessary, the person should shower and change contaminated clothing and shoes, and then must seek medical attention. INHALATION: supply fresh air. If required provide artificial respiration. |
| Gesundheitliche Auswirkungen | The health effects of the different barium compounds depend on how well the compound dissolves in water or the stomach contents. At low doses, barium acts as a muscle stimulant, while higher doses affect the nervous system, causing cardiac irregularities, tremors, weakness, anxiety, dyspnea, paralysisand possibly death. Barium may also cause gastrointestinal disturbances, damage the kidneys and cause decreases in body weight. Bromine vapour causes irritation and direct damage to the mucous membranes. Elemental bromine also burns the skin. The bromide ion is a central nervous system depressant and chronic exposure produces neuronal effects. This is called bromism and can result in central reactions reaching from somnolence to coma, cachexia, exicosis, loss of reflexes or pathologic reflexes, clonic seizures, tremor, ataxia, loss of neural sensitivity, paresis, papillar edema of the eyes, abnormal speech, cerebral edema, delirium, aggressiveness, and psychoses. Bromate is also a potential carcinogen. (L214, L638, L625, L626, L627) |
| Expositionspfade | Oral (L626)inhalation (L626)dermal (L626) |
| Toxizitätsübersicht | Barium is a competitive potassium channel antagonist that blocks the passive efflux of intracellular potassium, resulting in a shift of potassium from extracellular to intracellular compartments. The intracellular translocation of potassium results in a decreased resting membrane potential, making the muscle fibers electrically unexcitable and causing paralysis. Some of these barium's effects may also be due to barium induced neuromuscular blockade and membrane depolarization. Bromine is a powerful oxidizing agent and is able to release oxygen free radicals from the water in mucous membranes. These free radicals are also potent oxidizers and produce tissue damage. In additon, the formation of hydrobromic and bromic acids will result in secondary irritation. The bromide ion is also known to affect the central nervous system, causing bromism. This is believed to be a result of bromide ions substituting for chloride ions in the in actions of neurotransmitters and transport systems, thus affecting numerous synaptic processes. (L626, L627, A543, L214) |
| Signs and Symptoms | Ingesting excess barium may cause vomiting, abdominal cramps, diarrhea, difficulties in breathing, increased or decreased blood pressure, numbness around the face, and muscle weakness. High levels may result in changes in heart rhythm or paralysis and possibly death. Bromine vapour causes irritation and direct damage to the mucous membranes. Symptoms include lacrimation, rhinorrhoea, eye irritation with mucous secretions from the oropharyngeal and upper airways, coughing, dyspnoea, choking, wheezing, epistaxis, and headache. The bromide ion is a central nervous system depressant producing ataxia, slurred speech, tremor, nausea, vomiting, lethargy, dizziness, visual disturbances, unsteadiness, headaches, impaired memory and concentration, disorientation and hallucinations. This is called bromism. (L626, L627, L214) |
| Carcinogen Classification | No indication of carcinogenicity (not listed by IARC). (L135) |
| Wassergefährdungsklasse (WGK) | 1 |
| TSCA-Inventar-Status | TSCA listed |
| UN-Transportnummer | UN 2719 |
| RTECS-Nr. | EF8715000 |
| R-Sätze (R) | 20/22 |
| Gefahrensymbole | Xn |
| Sicherheitshinweise (S) | 28 |
| Gefahrenklasse | 5.1 |
| Verpackungsgruppe | II |
Anwendungen & Verwendung
Beschreibung
Barium bromate is used extensively to form other bromates, including the alkali metal bromates which are used extensively in Industry. HBrO3, a colorless liquid, is made by the addition of dilute sulfuric acid to barium bromate. It dissociates extensively in aqueous solution and is a strong acid. The scientific literature contains a few studies of barium bromate chiefly due to interest in Industry for its use to prepare other bromate salts. This salt is available commercially, worldwide.
Verwenden
Barium bromate [Ba(BrO3)2] is used as a corrosion inhibitor to prevent rust and as an oxidizing agent and chemical reagent.
Herstellung & Synthese
synthetische
Barium Bromate may be prepared by reaction of the hydroxide with sodium bromate: Ba(OH)2＋ 2NaBrO3→Ba(BrO3)2＋ 2NaOH Barium bromate is relatively insoluble, and has a value of 0.782 g/100 ml of water at 298 K,if recrystallized, it forms a monohydrate, Ba(BrO3)2·H2O, which occurs as white or colorless, prismatic crystals. A new and general method of inducing a precipitation from homogeneous solution has been applied to the separation of barium and strontium. The precipitation of barium bromate, a water-soluble compound, is brought about by a gradual change in the composition of the solvent media. An organic compound, such as methanol or tetrahydrofuran, is allowed to diffuse into the original water solution, thus slowly converting the solution into a water organic mixture. Strontium bromate is about 40 times more soluble in water than barium bromate. The increased solubility plus the greater stability of the strontium MEDTA chelate tend to hold the strontium in solution. The chief advantage of this method over the separation of Sr from Ba by precipitation of barium chromate is in the preparation of barium compounds. Usually, barium must be separated from the chromate before proceeding. However, barium bromate can be easily converted to the oxide, eliminating this separation step.