Аммония метаванадат
- английское имяAmmonium metavanadate
- CAS №7803-55-6
- CBNumberCB8854364
- ФормулаH4NO3V
- мольный вес116.98
- EINECS232-261-3
- номер MDLMFCD00011430
- файл Mol7803-55-6.mol
химическое свойство
| Температура плавления | 200 °C |
| плотность | 2.32 g/cm3 at 25 °C (lit.) |
| температура хранения | Store at RT. |
| растворимость | H2O: soluble |
| форма | Solid |
| Удельный вес | 2.33 |
| цвет | White to yellow |
| Запах | Odorless |
| РН | 7 (5.1g/l, H2O, 20℃) |
| Растворимость в воде | 5.1 g/L (20 ºC) |
| Мерк | 14,568 |
| Пределы воздействия | NIOSH: Ceiling 0.05 mg/m3 |
| Стабильность | Stable. Incompatible with strong acids, strong oxidizing agents. Protect from moisture - hygroscopic. |
| Справочник по базе данных CAS | 7803-55-6(CAS DataBase Reference) |
| FDA UNII | FL85PX638G |
| Система регистрации веществ EPA | Ammonium vanadate (7803-55-6) |
| Коды опасности | T+,T | |||||||||
| Заявления о рисках | 25-26-36/37/38-20-34-22-36/37-23/24/25 | |||||||||
| Заявления о безопасности | 26-36/37/39-45-37/39-22-28 | |||||||||
| РИДАДР | UN 2859 6.1/PG 2 | |||||||||
| WGK Германия | 3 | |||||||||
| RTECS | YW0875000 | |||||||||
| F | 3 | |||||||||
| TSCA | Yes | |||||||||
| Класс опасности | 6.1 | |||||||||
| Группа упаковки | II | |||||||||
| кода HS | 28419030 | |||||||||
| Банк данных об опасных веществах | 7803-55-6(Hazardous Substances Data) | |||||||||
| Токсичность | LD50 orally in rats: 0.16 g/kg (Smyth) | |||||||||
| NFPA 704: |
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рисовальное письмо(GHS)
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рисовальное письмо(GHS)
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сигнальный язык
опасность
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вредная бумага
H319：При попадании в глаза вызывает выраженное раздражение.
H301：Токсично при проглатывании.
H372：Поражает органы в результате многократного или продолжительного воздействия.
H411：Токсично для водных организмов с долгосрочными последствиями.
H332：Вредно при вдыхании.
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оператор предупредительных мер
P273：Избегать попадания в окружающую среду.
P301+P310+P330：ПРИ ПРОГЛАТЫВАНИИ: Немедленно обратиться за медицинской помощью. Прополоскать рот.
P304+P340+P312：ПРИ ВДЫХАНИИ: Свежий воздух, покой. Обратиться за медицинской помощью при плохом самочувствии.
P305+P351+P338：ПРИ ПОПАДАНИИ В ГЛАЗА: Осторожно промыть глаза водой в течение нескольких минут. Снять контактные линзы, если Вы ими пользуетесь и если это легко сделать. Продолжить промывание глаз.
P314：В случае плохого самочувствия обратиться к врачу.
Аммония метаванадат химические свойства, назначение, производство
Химические свойства
Ammonium metavanadate is an inorganic acidic salt with the formula NH4VO3. It is a white or slightly yellow crystalline powder. Slightly soluble in cold water, hot ethanol and ether, soluble in hot water and dilute ammonium hydroxide. It is an important intermediate in the purification of vanadium.Использование
Ammonium vanadium oxide is used as a catalyst in organic synthesis, and as an analytical reagent in laboratories. It is employed in the preparation of vanadate. It acts as a sensor for the determination of N-acetyltransferase activity in humans. Further it finds use in dyes, varnishes, indelible inks, drier for paints, and in photography. With copper carbonate, it has been shown to enhance the catalytic activities. Ammonium metavanadate is an environmental-friendly catalyst to prepare alpha-hydroxyphosphonate derivatives in high yield through the reaction of aryl/heteroaryl aldehydes with triethylphosphonate derivatives.Общее описание
Ammonium metavanadate appears as a white crystalline powder. Slightly soluble in water and denser than water. Decomposes at 410°F. May release toxic fumes. Moderately toxic. An irritant. Used as a dryer for paints and inks, and for dyes. Loses ammonia upon heating.Реакции воздуха и воды
Slightly soluble in water.Профиль реактивности
Acidic inorganic salts, such as Ammonium metavanadate, are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions.Угроза здоровью
TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.Пожароопасность
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.Профиль безопасности
Poison by ingestion, subcutaneous, intravenous, intratracheal, and intraperitoneal routes. Moderately toxic by skin contact. An experimental teratogen. Other experimental reproductive effects. Mutation data reported. See also VANADIUM COMPOUNDS. When heated to decomposition it emits toxic fumes of NH3, VOx, and NOx.Возможный контакт
It is used in the metals industry to make alloys, chemical reactions, dyes, inks, varnishes, printing, medicines, and photography.Перевозки
UN2859 Ammonium metavanadate, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.Методы очистки
Wash the salt with H2O until free from Cl-ions and dry it in air. It is soluble in H2O (5.18g/100mL at 15o, 10.4g/100mL at 32o) but is more soluble in dilute NH3. It crystallises from conductivity water (20mL/g). When heated at relatively low temperature, it loses H2O and NH3 to give vanadium oxide (V2O5), and at 210o it forms lower oxides. [Baker et al. Inorg Synth III 117 1950.] Its solubility in H2O is 0.52% (15o), 1% (32o) and 1.6% (50o). After washing the technical grade salt with H2O, it had Na, Mn and U at 0.06, 0.2 and 0.1 ppm, respectively. [Brauer in Handbook of Preparative Inorganic Chem (Ed. Brauer) Academic Press Vol II p 1272-1273 1965.]Несовместимости
Moisture forms an acidic solution. React with bases and alkaline material: may generate heat and release flammable hydrogen gas.Аммония метаванадат запасные части и сырье
Аммония метаванадат поставщик
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