ARSENIC PENTASULPHIDE
ARSENIC PENTASULPHIDE атрибут
| Температура плавления: |
>300 °C (lit.) |
| растворимость: |
insoluble in H2O; soluble in alkaline solutions |
| форма: |
коричнево-желтое аморфное твердое вещество |
| цвет: |
brown-yellow amorphous
solid |
| Растворимость в воде: |
г/л раствора H2O: 0,00136 (0°C) [KRU93] |
| Мерк: |
13,807 |
| Справочник по базе данных CAS: |
1303-34-0 |
| FDA UNII: |
QT80493YBG |
| Система регистрации веществ EPA: |
Arsenic pentasulfide (1303-34-0) |
ARSENIC PENTASULPHIDE химические свойства, назначение, производство
Химические свойства
ARSENIC PENTASULPHIDE is yellow or orange powder(s); stable in air up to 95°C; can be prepared by fusing As and S or by passing H2S through HCl solution of arsenic acid; used as a paint pigment, in light filters [HAW93] [KIR78]
Физические свойства
Yellow-brown glassy amorphous solid; sublimes on heating; decomposes around 500°C; insoluble in cold water (~1.4 mg/L at 0°C); dissolves in alkalies and solutions of alkali metal sulfides, and in nitric acid.
Использование
ARSENIC PENTASULPHIDE is used for preparation of glasses with small gold additions posessing photoluminescent and conductive properties 1 Reactant for preparation of silver thioarsenate complex ethylenediammonium salt 2
Методы производства
Arsenic(V) sulfide, As4S10, is produced by fusing stoichiometric quantities of As and S powder or by precipitation from highly acidic arsenate(V) solution with H2S.
Подготовка
Arsenic pentasulfide is prepared by precipitation from an acidic solution of orthoarsenic acid, H3AsO4, or arsenic pentachloride, AsCl5 or any other soluble As(V) salt by passing hydrogen sulfide. It may be also prepared by heating a mixture of arsenic and sulfur, extracting the fused mass with ammonia solution and reprecipitating arsenic pentasulfide at low temperature by addition of HCl.
ARSENIC PENTASULPHIDE препаратная продукция и сырье
сырьё
препарат
ARSENIC PENTASULPHIDE поставщик
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