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Magnesiumdioxid
24-28%asMgO2 · Magnesiumdioxid · Magnesium dioxide · MAGNESII PEROXIDUM · Magnesium peroxidum · foranalyticalpurpose · Magnesium superoxide · MAGNESIUM PEROXIDE LIGHT
Identifikatoren & physikalische Daten
| CAS No. | 1335-26-8 |
|---|---|
| Summenformel | MgO2 |
| Durchschnittliche Molmasse | 56,304 g/mol |
| Monoisotopische Masse | 55,97487094 g/mol |
| SMILES | [Mg+2].[O-][O-] |
| InChIKey | SPAGIJMPHSUYSE-UHFFFAOYSA-N |
| PubChem CID | 61745 |
| ChEMBL | CHEMBL3707298 |
| EC No. | 215-627-7 |
| DTXSID | DTXSID9049667 |
| Lokaler Name | Magnesiumdioxid |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 46,1 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 2 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 3 |
| Formalladung | 0 |
| Komplexität | 2,8 |
| Geruch | Odorless |
| Geschmack | Tasteless |
| Dichte | Approximately 3.0 g/cu cm |
| Color/Form | White cubic crystalsWhite powder |
| Löslichkeit | Soluble in dilute acid solutions with formation of hydrogen peroxideInsoluble in water and gradually decomposed by it with liberation of oxygenPractically insoluble in water and in ethanol (96 per cent). It dissolves in dilute mineral acids. |
| Schmelzpunkt | 100 °C (decomposes) |
| Physical Description | Magnesium peroxide appears as a white powder. Noncombustible but accelerates the burning of combustible material, if the combustible material is finely divided the mixture may be explosive. Mixtures of combustible material and the peroxide can be ignited by friction or contact with moisture. Used in medicine, and as a bleaching agent. |
| Other Experimental Properties | A powerful oxidizing materialDangerous fire risk, reacts with acidic materials and moistureWhen strongly heated loses all the peroxide oxygen |
| Merck | 13,5704 |
| Kosmetik-Inhaltsstoffe Funktionen | OXIDISING |
| LogP (Verteilungskoeffizient) | -0.425 (est) |
| CAS Datenbank | 14452-57-4 |
| EPA chemische Informationen | Magnesium peroxide (Mg(O2)) (14452-57-4) |
Sicherheit & Vorschriften
| GHS-Einstufung | DangerH271 (48.8%): May cause fire or explosionstrong Oxidizer [Danger Oxidizing liquidsOxidizing solids]P210, P220, P260, P264, P280, P283, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P306+P360, P316, P321, P363, P370+P378, P371+P380+P375, P405, P420, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 121 reports by companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.H272 (100%): May intensify fireoxidizer [Danger Oxidizing liquids |
|---|---|
| Regulatorische Informationen | Chemical: Magnesium peroxide (Mg(O2))Magnesium peroxide: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right. |
| Weitere Sicherheitsinformationen | IMAP assessments - Peroxides of divalent cations: Human health tier II assessment |
| DOT-Kennzeichnung | Oxidizer |
| Brandgefahren | Excerpt from ERG Guide 140 [Oxidizers]:CAUTION: Ammonium nitrate products may explode if involved in fire or contaminated with hydrocarbons (fuels), organic matter, other contaminants or when hot molten and contained. Treat as an explosive (GUIDE 112). |
| Brandpotenzial | Flammable by chemical reaction with acidic materials and moisture ... . |
| Gesundheitsgefahren | Excerpt from ERG Guide 140 [Oxidizers]:· Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or death. |
| DOT-Nummer und Handbuch | 1476 140 |
| Reaktive Gruppe | Salts, Basic |
| Reactivity Alerts | Strong Oxidizing Agent |
| Reactivity Profile | Mixtures of combustible material and the peroxide can be ignited with friction or moisture. Water gradually decomposes it liberating oxygen, with dilute acids it forms hydrogen peroxide, when strongly heated it losses all peroxide oxygen [Merck 11th ed. 1989]. |
| DOT Emergency Guidelines | /GUIDE 140: OXIDIZERS/ Fire or Explosion: These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard./GUIDE 140: OXIDIZERS/ Health: Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or death. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause pollution./GUIDE 140: OXIDIZERS/ Public Safety: CALL Emergency Response Telephone Number ... As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. Keep unauthorized personnel away. Stay upwind. Keep out of low areas. Ventilate closed spaces before entering./GUIDE 140: OXIDIZERS/ Protective Clothing: Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection. Structural firefighters' protective clothing will only provide limited protection.For more DOT Emergency Guidelines (Complete) data for Magnesium peroxide (8 total), please visit the HSDB record page. |
| DOT Hazard Classification | Magnesium peroxideUN1476Div 5.1 Oxidizer (49 eCFR § 173.127)PG II: the degree of danger presented by the material is medium |
| Brandbekämpfung | Excerpt from ERG Guide 140 [Oxidizers]: |
| 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 140 [Oxidizers]:General First Aid: |
| Firefighting Hazards | Will decompose violently in or near a fire. |
| Expositionsschutz und Persönliche Schutzausrüstung | · Wear positive pressure self-contained breathing apparatus (SCBA). |
| Brandbekämpfungsverfahren | Personnel protection: ... Wear positive pressure self-contained breathing apparatus when fighting fires involving this material.If material on fire or involved in fire: Flood with water. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.Evacuation: If fire becomes uncontrollable -- consider evacuation of one-half (1/2) mile radius. |
| Freisetung ohne Brand | Excerpt from ERG Guide 140 [Oxidizers]: |
| Entsorgungsverfahren | SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational harm/injury/toxicity or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air qualitypotential migration in soil or watereffects on animal and plant lifeand conformance with environmental and public health regulations. |
| Preventive Measures | SRP: The scientific literature for the use of contact lenses by industrial workers is inconsistent. The benefits or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.Personnel protection: Avoid breathing dusts. ... Do not handle broken packages unless wearing appropriate personal protective equipment. Wash away any material which may have contacted the body with copious amounts of water or soap and water. ...If material not on fire and not involved in fire: Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. |
| Isolation and Evacuation | Excerpt from ERG Guide 140 [Oxidizers]:Immediate precautionary measure |
| Personal Protective Equipment (PPE) | Excerpt from ERG Guide 140 [Oxidizers]:Personnel protection: ... Wear appropriate chemical protective gloves, boots and goggles. |
| Emergency Response Planning Guidelines | Small Fire |
| Ökotoxizitätsauszüge | /OTHER TOXICITY INFORMATION/ Microporous filters containing MgO2 were shown to be effective in the removal and inactivation of bacteria and viruses from tap water. Pseudomonas aeruginosa, P. cepacia and Escherichia coli collected by the filters were found to rapidly decrease in numbers to undetectable levels within 24 hours. In contrast, the same bacteria collected on identical filters not containing MgO2, either rapidly increased in numbers or their numbers remained unchanged. Poliovirus type 1, Echovirus type 1, Reovirus type 3 and Rotavirus SA-11 were found to readily adsorb to the filters. The numbers of viruses which could be recovered from the MgO2 containing filters decreased rapidly with time as compared to control filters. No significant inactivation of bacteria or viruses occurred in tap water passed through the filters, strongly suggesting that the microorganisms were being inactivated while adsorbed to the filters and not by substances released by the filters into the water. The filters remained effective even after the passage of large volumes of tap water through small diameter filters and in the presence of raw sewage contaminated tap water. Such filters could potentially be useful for disinfection of water supplies for small community and individual water systems./OTHER TOXICITY INFORMATION/ Sulfate-reducing bacteria (SRB), which cause microbiologically influenced material corrosion under anoxic conditions, form one of the major groups of microorganisms responsible for the generation of hydrogen sulfide. In this study, which is aimed at reducing the presence of SRB, a novel alternative approach involving the addition of magnesium peroxide (MgO2) compounds involving the use of reagent-grade MgO2 and a commercial product (ORC) was evaluated as a means of inhibiting SRB in laboratory batch columns. Different concentrations of MgO2 were added in the columns when black sulfide sediment had appeared in the columns. The experimental results showed that MgO2 is able to inhibit biogenic sulfide. The number of SRB, the sulfide concentration and the sulfate reducing rate (SRR) were decreased. ORC trade mark as an additive was able to decrease more effectively the concentration of sulfide in water and the SRB-control effect was maintained over a longer time period when ORCtrade mark was used. The level of oxidation-reduction potential (ORP), which has a linear relationship to the sulfide/sulfate ratio, is a good indicator of SRB activity. As determined by fluorescence in-situ hybridization (FISH), most SRB growth was inhibited under increasing amounts of added MgO2. The concentration of sulfide reflected the abundance of the SRB. Utilization of organic matter greater than the theoretical SRB utilization rate indicated that facultative heterotrophs became dominant after MgO2 was added. The results of this study could supply the useful information for further study on evaluating the solution to biocorrosion problems in practical situations. |
| Probable Routes of Human Exposure | NIOSH (NOES Survey 1981-1983) has statistically estimated that 1,426 workers (12 of these are female) are potentially exposed to manganese peroxide in the US(1). |
| Antidote and Emergency Treatment | Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Magnesium and Related Compounds/Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 ml/kg up to 200 ml of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool ... . /Magnesium and Related Compounds/Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in severe respiratory distress. Positive-pressure ventilation techniques with a bag valve mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Monitor cardiac rhythm and treat arrhythmias if necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's (LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors if patient is hypotensive with a normal fluid volume. Watch for signs of fluid overload ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Magnesium and Related Compounds/ |
| Wassergefährdungsklasse (WGK) | 3 |
| TSCA-Inventar-Status | TSCA listed |
| UN-Transportnummer | UN 1476 |
| R-Sätze (R) | 8-34 |
| Gefahrensymbole | O,C |
| Sicherheitshinweise (S) | 17-36-45-36/37/39-27-26 |
| Gefahrenklasse | 5.1 |
| Verpackungsgruppe | II |
| Gefahrstoffdaten | 14452-57-4(Hazardous Substances Data) |
Anwendungen & Verwendung
Verwenden
Bleaching and oxidizing agent, medicine (antacid).