ПЕРСУЛЬФАТ КАЛИЯ
- английское имяPotassium persulfate
- CAS №7727-21-1
- CBNumberCB6854294
- ФормулаK2O8S2
- мольный вес270.32
- EINECS231-781-8
- номер MDLMFCD03457781
- файл Mol7727-21-1.mol
химическое свойство
| Температура плавления | 1067 °C |
| Температура кипения | 1689 °C |
| плотность | 2.47 |
| Плотность накопления | 1150kg/m3 |
| плотность пара | 9.3 (vs air) |
| давление пара | 0Pa at 25℃ |
| температура хранения | Store at +5°C to +30°C. |
| растворимость | H2O: 0.5 M at 20 °C, clear, colorless |
| форма | Solid |
| Удельный вес | 2.477 |
| цвет | White |
| Запах | Odorless |
| Водородный показатель | 2.5 - 4.5 |
| РН | 3.2 (50g/l, H2O, 20℃) |
| Растворимость в воде | 5 g/100 mL (20 ºC) |
| Мерк | 14,7656 |
| Пределы воздействия | ACGIH: TWA 0.1 mg/m3 |
| Стабильность | Stable. Strong oxidizer. Incompatible with strong reducing agents, organic materials, combustible materials. |
| ИнЧИКей | USHAGKDGDHPEEY-UHFFFAOYSA-L |
| LogP | -1 at 20℃ |
| Вещества, добавляемые в пищу (ранее EAFUS) | POTASSIUM PERSULFATE |
| FDA 21 CFR | 172.210; 175.105; 175.210; 176.170; 177.2600 |
| Справочник по базе данных CAS | 7727-21-1(CAS DataBase Reference) |
| Рейтинг продуктов питания EWG | 3-6 |
| Словарь онкологических терминов NCI | KPS |
| FDA UNII | 6B86K0MCZC |
| Система регистрации веществ EPA | Potassium persulfate (7727-21-1) |
| Информация о косметике | Potassium Persulfate |
| UNSPSC Code | 12352302 |
| NACRES | NA.23 |
больше
| Коды опасности | O,Xn | |||||||||
| Заявления о рисках | 8-22-36/37/38-42/43 | |||||||||
| Заявления о безопасности | 22-24-26-37 | |||||||||
| РИДАДР | UN 1492 5.1/PG 3 | |||||||||
| WGK Германия | 1 | |||||||||
| RTECS | TT5900000 | |||||||||
| TSCA | Yes | |||||||||
| кода HS | 2833 40 00 | |||||||||
| Класс опасности | 5.1 | |||||||||
| Группа упаковки | III | |||||||||
| Банк данных об опасных веществах | 7727-21-1(Hazardous Substances Data) | |||||||||
| Токсичность | LD50 orally in Rabbit: 802 mg/kg | |||||||||
| NFPA 704: |
|
рисовальное письмо(GHS)
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рисовальное письмо(GHS)
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сигнальный язык
опасность
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вредная бумага
H315：При попадании на кожу вызывает раздражение.
H319：При попадании в глаза вызывает выраженное раздражение.
H335：Может вызывать раздражение верхних дыхательных путей.
H302：Вредно при проглатывании.
H317：При контакте с кожей может вызывать аллергическую реакцию.
H272：Окислитель; может усилить возгорание.
H334：При вдыхании может вызывать аллергическую реакцию (астму или затрудненное дыхание).
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оператор предупредительных мер
P210：Беречь от тепла, горячих поверхностей, искр, открытого огня и других источников воспламенения. Не курить.
P280：Использовать перчатки/ средства защиты глаз/ лица.
P301+P312：ПРИ ПРОГЛАТЫВАНИИ: Обратиться за медицинской помощью при плохом самочувствии.
P302+P352：ПРИ ПОПАДАНИИ НА КОЖУ: Промыть большим количеством воды.
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.
ПЕРСУЛЬФАТ КАЛИЯ химические свойства, назначение, производство
Описание
Potassium persulfate, is composed of white crystals that are soluble in water, and it decomposes below 212°F (100°C). Potassium persulfate is a dangerous fire risk in contact with organic materials. It is a strong oxidizing agent and an irritant, with a four-digit UN identification number of 1492. The primary uses are in bleaching, as an oxidizing agent, as an antiseptic, as a polymerization promoter, and in the manufacture of pharmaceuticals.Химические свойства
Potassium persulfate is a colorless or white, odorless crystalline material.Физические свойства
Colorless or white crystals; triclinic structure; density 2.477 g/cm3; stable in solid crystalline form; decomposes on heating, evolving oxygen; completely decomposes at about 100°C; sparingly soluble in cold water 1.75 g/100mL at 0°C; moderately soluble at ordinary temperature, 5.29 g/100 mL at 20°C;aqueous solution acidic and unstable, decomposing slowly at room temperature and more rapidly when the solution is warmed; insoluble in alcohol.Использование
Potassium persulfate?is a powerful oxidant, commonly used to initiate polymerizations. Potassium Persulphate used for bleaching and textile desizing, as an oxidizing agent and antiseptic, in purification of ammonium sulfate, and in the manufacture of soap and pharmaceuticals. It is also used as al laboratory oxidant and photography chemical. It is a food additive.Подготовка
Potassium persulfate can be prepared by electrolysis of a mixture of potassium sulfate and potassium hydrogen sulfate at a high current density:2KHSO4→K2S2O8+ H2
Also, the compound can be prepared by adding potassium hydrogen sulfate,KHSOto an electrolyzed solution of ammonium hydrogen sulfate, NH4HSO4.
Общее описание
A white crystalline solid. Specific gravity 2.477. Decomposes below 100°C.Реакции воздуха и воды
Water soluble. Slowly decomposed by water. The salt rapidly liberates oxygen when heated, and especially so when wet.Профиль реактивности
Potassium persulfate is an oxidizing agent. Noncombustible but accelerates the burning of combustible material. Potassium persulfate plus a little potassium hydroxide and water released sufficient heat and oxygen to ignite a polythene (polyethylene) liner in a container. [MCA Case History 1155. 1955].Опасность
Strong irritant and oxidizing agent. Fire risk in contact with organic materials.Угроза здоровью
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.Пожароопасность
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.Сельскохозяйственное использование
Potassium sulphate, also called sulphate of potash, is a white crystalline material, moderately hygroscopic, available in fine, granular and semi-granular forms. It contains 48 to 54% potassium (as K2O) and supplies 17 to 20 % of sulphate. Chloride-sensitive crops like tobacco, grapes and potato require chloride-free potassium fertilizers. Therefore, these crops are fertilized with potassium sulphate, although this is more expensive than potassium chloride. These three crops, being major crops, account for about 7% of the total potash consumption. For best results, potassium sulphate should contain at least 50 % potash by weight.Potassium sulphate occurs in nature as 'langbeinite' , a double sulphate of potassium and magnesium (K2SO4?2MgSO4) and made from burkeite (Na2CO3?2Na2SO4), kainite (KCl?MgS04?3H2O) or potassium chloride (KCl) as follows:
When applied to soil, potassium ion from the watersoluble potassium sulphate is retained in the soil colloids and not easily leached out. This makes potassium sulphate an excellent fertilizer, useful for all soils and crops while sowing or before sowing. It is also a safe ingredient of powdered, mixed fertilizers.
Профиль безопасности
Moderately toxic by ingestion. An irritant and allergen. A powerful oxidtzer. Flammable when exposed to heat or by chemical reaction. Can react with reducing materials. It liberates oxygen above 100' when dry or @ about 50' when in solution. When heated to decomposition it emits highly toxic fumes of SOx,, S2O8, and K2O.Возможный контакт
Potassium persulfate is used as a bleaching and oxidizing agent; it is used in redox polymeri- zation catalysts; in the defiberizing of wet strength paper and in the desizing of textiles. Soluble in water.Перевозки
UN1492 Potassium persulfate, Hazard Class: 5.1; Labels: 5.1-Oxidizer.Методы очистки
Crystallise the persulfate twice from distilled water (10mL/g) and dry it at 50o in a vacuum desiccator. Its solubility in H2O is 1.6% at 0o, 4.5% at 20o, and 7.2% at 30o. An aqueous solution decomposes on long standing with evolution of O2 and formation of KHSO4. It is a powerful oxidising agent. Store it at ~10o. [Fehér in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 390 1963.]Несовместимости
A strong oxidizer. Incompatible with combustible, organic or other readily oxidizable materials; sulfur, metallic dusts, such as aluminum dust; chlorates and perchlorates. Attacks chemically active metals. Keep away from moisture.Утилизация отходов
Use large volumes of reducing agents (bisulfites, e.g.). Neutralize with soda ash and drain into sewer with abundant water.ПЕРСУЛЬФАТ КАЛИЯ запасные части и сырье
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