Mercury(II) thiocyanate
- английское имяMERCURIC THIOCYANATE
- CAS №592-85-8
- CBNumberCB0111438
- ФормулаC2HgN2S2
- мольный вес316.75
- EINECS209-773-0
- номер MDLMFCD00011039
- файл Mol592-85-8.mol
химическое свойство
| Температура плавления | 165 °C (dec.) (lit.) |
| плотность | 3.71 g/mL at 25 °C (lit.) |
| Плотность накопления | 750kg/m3 |
| Fp | 120 °C |
| температура хранения | Store at RT. |
| растворимость | Methanol (Slightly) |
| форма | Powder |
| цвет | White to pale yellow |
| РН | 5 (20°C, 50g/L in H2O, slurry) |
| Растворимость в воде | Soluble in dilute hydrochloric acid, potassium cyanide and ammonia. Slightly soluble in alcohol and ether. Insoluble in water. |
| Чувствительный | Hygroscopic |
| Мерк | 14,5890 |
| БРН | 3561344 |
| Стабильность | Stable. Incompatible with strong acids. May be light or moisture sensitive. |
| Справочник по базе данных CAS | 592-85-8(CAS DataBase Reference) |
| FDA UNII | 3JNH1DM7IF |
| Система регистрации веществ EPA | Mercuric thiocyanate (592-85-8) |
| UNSPSC Code | 12352302 |
| NACRES | NA.23 |
больше
| Коды опасности | T+,N,Xn |
| Заявления о рисках | 26/27/28-32-33-50/53-20/21/22 |
| Заявления о безопасности | 13-28-45-60-61-46-36/37 |
| РИДАДР | UN 1646 6.1/PG 2 |
| WGK Германия | 3 |
| RTECS | XL1550000 |
| F | 8 |
| TSCA | Yes |
| Класс опасности | 6.1 |
| Группа упаковки | II |
| кода HS | 28521000 |
| Банк данных об опасных веществах | 592-85-8(Hazardous Substances Data) |
рисовальное письмо(GHS)
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рисовальное письмо(GHS)
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сигнальный язык
опасность
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вредная бумага
H300+H310+H330：Смертельно при проглатывании, при контакте с кожей или при вдыхании.
H410：Чрезвычайно токсично для водных организмов с долгосрочными последствиями.
H373：Может поражать органы (Нервная система) в результате многократного или продолжительного воздействия при вдыхании.
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оператор предупредительных мер
P262：Избегать попадания в глаза, на кожу или одежду.
P273：Избегать попадания в окружающую среду.
P280：Использовать перчатки/ средства защиты глаз/ лица.
P302+P352+P310：ПРИ ПОПАДАНИИ НА КОЖУ: Промыть большим количеством воды. Немедленно обратиться за медицинской помощью.
P304+P340+P310：ПРИ ВДЫХАНИИ: Свежий воздух, покой. Немедленно обратиться за медицинской помощью.
P314：В случае плохого самочувствия обратиться к врачу.
Mercury(II) thiocyanate химические свойства, назначение, производство
Химические свойства
Mercuric thiocyanate is an inorganic chemical substance. It is a stable solid at room temperature, and depending upon the purity, it appears as odourless white crystalline powder or grey. It is insoluble in water and denser than water and sinks in water. The solubility in alcohol and boiling H2O and in KSCN solution is higher, in ether lower. Decomposes with swelling on heating to 165°C. On decomposition, mercuric thiocyanate releases hazardous substances such as cyanide vapours, vapours of mercury, oxides of nitrogen (NO, NO2), and oxides of sulphur (SO2, SO3). Mercury thiocyanate has limited uses in chemical synthesis.Использование
For Pharaoh's serpents (fireworks); intensifier in photography.Реакции воздуха и воды
Insoluble in water.Профиль реактивности
MERCURIC THIOCYANATE decomposes into its elements at about 165°C. Burns readily in air to generate a coil of cohesive ash resembling a serpent (hence used in a firework: Pharaoh's serpents). Swells up to many times its original volume if heated [USCG, 1999]. Soluble in dilute hydrochloric acid [Merck]. Incompatible with strong oxidizing agents.Опасность
Highly toxic by ingestion, inhalation, and skin absorption.Угроза здоровью
Mercuric thiocyanate causes severe eye and skin irritation with possible burns and causes digestive and respiratory tract irritation with possible burns. It may impair fertility, may cause harm to the unborn child, is harmful if inhaled, may cause allergic skin reaction, may cause kidney damage, may cause CNS effects, is light sensitive, and is a severe marine pollutant. Contact with acids liberates very toxic gas. The target organs include kidneys, CNS, reproductive system, eyes, and skin.Профиль безопасности
A poison by ingestion and intraperitoneal routes. Moderately toxic by skin contact. Thermally unstable and decomposition may be vigorous. When heated to decomposition it emits very toxic fumes of Hg, NOx, SOx, and CN-. See also MERCURY COMPOUNDS and CYANATES.Синтез
A Hg(NO3)2 solution, acidified with a few drops of HNO3, is treated with the stoichiometric amount of KSCN solution. The resultant crystalline precipitate is suction-filtered and washed with H2O. The product may be recrystallized from hot H2O or alcohol. Yield 80%.Hg(NO3)2 + 2 KSCN = Hg(SCN)2 + 2KNO3
Возможный контакт
Mercury thiocyanate is used in photography and fireworks.Перевозки
UN1646 Mercury thiocyanate, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.Методы очистки
Recrystallise it from H2O, and it can give various crystal forms depending on conditions. Its solubility in H2O is 0.069% at 25o, but is more soluble at higher temperatures. It decomposes to Hg above 165o. Poisonous. [Mason & Forgeng J Phys Chem 35 1121 1931, Birckenbach & Kolb Chem Ber 68 919 1935.]Несовместимости
Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Mercury thiocyanate is sensitive to heat; expands to many times its original volume and then decomposes at freezing/melting point forming toxic fumes of sulfur oxides, mercury cyanide, and nitrogen oxides. Contact with acid or acid fumes causes release of toxic mercury and cyanide vapors. Incompatible with chlorine, reducing agents such as hydrides, sulfidesУтилизация отходов
Small amounts may be destroyed by alkaline hydrolysis. Admixture with alkali can be followed by soil burial. Larger quantities can be disposed of by incineration in admixture with acetone or xylene and using effluent gas scrubbing. Do not reuse empty container; proper disposal required.