Chromic acid
- русский язык имя
- английское имяChromic acid
- CAS №7738-94-5
- CBNumberCB52130391
- ФормулаCrH2O4
- мольный вес118.01
- EINECS231-801-5
- номер MDLMFCD01941501
- файл Mol7738-94-5.mol
химическое свойство
| Температура плавления | 196°C |
| Температура кипения | 250 °C (decomposes) |
| плотность | 2.290 |
| растворимость | Methanol (Slightly) |
| форма | Liquid |
| цвет | Clear, orange |
| РН | 3.03(1 mM solution);2.33(10 mM solution);2.06(100 mM solution) |
| Запах | Odorless |
| Растворимость в воде | HIGHLY Soluble |
| Рейтинг продуктов питания EWG | 1-4 |
| FDA UNII | SA8VOV0V7Q |
| Система регистрации веществ EPA | Chromic(VI) acid (7738-94-5) |
| Пестициды Закон о свободе информации (FOIA) | Chromic acid |
| РИДАДР | UN 1463/1755 | |||||||||
| OEB | E | |||||||||
| OEL | TWA: 0.0002 mg/m3 | |||||||||
| Банк данных об опасных веществах | 7738-94-5(Hazardous Substances Data) | |||||||||
| 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
H317：При контакте с кожей может вызывать аллергическую реакцию.
H350：Может вызывать раковые заболевания.
H400：Чрезвычайно токсично для водных организмов.
H410：Чрезвычайно токсично для водных организмов с долгосрочными последствиями.
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оператор предупредительных мер
P261：Избегать вдыхания пыли/ дыма/ газа/ тумана/ паров/ аэрозолей.
P272：Не уносить загрязненную спецодежду с места работы.
P273：Избегать попадания в окружающую среду.
P280：Использовать перчатки/ средства защиты глаз/ лица.
P302+P352：ПРИ ПОПАДАНИИ НА КОЖУ: Промыть большим количеством воды.
P333+P313：При возникновении раздражения или покраснения кожи обратиться за медицинской помощью.
P363：Перед повторным использованием выстирать загрязненную одежду.
P391：Ликвидировать просыпания/проливы/утечки.
P501：Удалить содержимое/ контейнер на утвержденных станциях утилизации отходов.
Chromic acid химические свойства, назначение, производство
Описание
Chromic acid, CrO3, is composed of dark, purplish-red, odorless crystals that are soluble in water. The specific gravity is 2.7, which is heavier than water. It is a powerful oxidizing agent and may explode on contact with organic materials. Chromic acid is a poison, corrosive to the skin, and has a TLV of 0.05 mg/m3 of air. Chromic acid is a known human carcinogen. The four-digit UN identification number is 1463. The NFPA 704 designation is health 3, flammability 0, and reactivity 1. The white section at the bottom of the 704 diamond has an “oxy” prefix, indicating that it is an oxidizer.Химические свойства
Chromic acid is a dark purplish-red odorless flakes or crystalline powderИспользование
Chemicals (chromates, oxidizing agents, catalysts), chromium-plating intermediate, medicine (caustic), process engraving, anodizing, ceramic glazes, colored glass, metal cleaning, inks, tanning, paints, textile mordant, etchant for plastics.Определение
The name is in common use, although the true chromic acid, H2CrO4, exists only in solution.Общее описание
Chromic acid is a dark purplish red solid, exists only in solution. The hydrate of chromiumoxide, it is used in electroplating baths. Chromic acid is soluble in water with the release of heat. The material itself is noncombustible but Chromic acid will accelerate the burning of combustible materials. Its solution is corrosive to metals and tissue.Реакции воздуха и воды
Water soluble.Профиль реактивности
A very powerful oxidizing agent, confirmed human carcinogen. Upon contact with reducing reagents Chromic acid can cause a violent explosion, in contact with organic matter Chromic acid may cause a violent oxidation leading to ignition. Dangerously reactive with acetone, alcohols, alkali metals (sodium, potassium), ammonia, arsenic, dimethylformamide, hydrogen sulfide, phosphorus, peroxyformic acid, pyridine, selenium, sulfur, and many other chemicals [Sax, 9th ed., 1996, p. 852]. When mixed with sulfuric acid for glass cleaning operations, used solution in closed bottle may explode due to internal pressure of carbon dioxide arising from contamination by carbon compounds [Bryson, W. R., Chem. Brit., 1975, 11, p. 377].Опасность
A human carcinogen. A poison. Corrosive to skin. Powerful oxidizing agent, may explode on contact with reducing agents, may ignite on contact with organic materials. Upper respiratory tract irritant.Угроза здоровью
Very irritating to eyes and respiratory tract. Ingestion causes severe gastrointestinal symptoms. Contact with eyes or skin causes burns; prolonged contact produces dermatitis (``chrome sores'').Пожароопасность
Behavior in Fire: Containers may explodeПрофиль безопасности
Confirmed human carcinogen. Poison by subcutaneous route. Mutation data reported. A powerful oxidzer. A powerful irritant of skin, eyes, and mucous membranes. Can cause a dermatitis, bronchoasthma, “chrome holes,” damage to the eyes. Dangerously reactive. Incompatible with acetic acid, acetic anhydride, tetrahydronaphthalene, acetone, alcohols, alkali metals, ammonia, arsenic, bromine penta fluoride, butyric acid, n,ndimethylformamide, hydrogen sulfide, peroxyformic acid, phosphorus, potassium hexacyanoferrate, pyridme, seleniumВозможный контакт
n chromium plating; medicine, ceramic glazers, and paints.Перевозки
UN1463 Chromium trioxide, anhydrous, Hazard Class: 5.1; Labels: 5.1-Oxidizer, 6.1-Poisonous materials, 8-Corrosive material. UN1755 (solution) Chromic acid, solid, Hazard class: 8; Labels: 8-Corrosive material.Несовместимости
A strong oxidizer. Aqueous solution is strongly acidic. Reacts with acetic acid, acetic anhydride, acetone, anthracene, chromous sulfide; diethyl ether; dimethyl formamide; ethanol, hydrogen sulfide; methanol, naphthalene, camphor, glycerol, potassium ferricyanide, pyridine, turpentine, combustibles; organics, and other easily oxidized materials (such as paper, wood, sulfur, aluminum, and plastics). Attacks metals in presence of moistureУтилизация отходов
Chemical reduction to chromium(III) can be followed by land fill disposal of the sludge.Chromic acid запасные части и сырье
Chromic acid поставщик
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