Серебро иодид
Серебро иодид атрибут
| Температура плавления: |
557°C |
| Температура кипения: |
1506°C |
| плотность: |
5.68 g/mL at 25 °C (lit.) |
| RTECS: |
VW4450000 |
| растворимость: |
insoluble in acid solutions |
| форма: |
Твердый |
| Удельный вес: |
6.01 |
| цвет: |
Желтый |
| Запах: |
odorless |
| Растворимость в воде: |
0,03 мг/л |
| Чувствительный: |
Light Sensitive |
| Кристальная структура: |
Cubic, Sphalerite Structure - Space Group F(-4)3m |
| Мерк: |
14,8516 |
| Константа произведения растворимости (Ksp): |
pKsp: 16.07 |
| Пределы воздействия: |
ACGIH: TWA 0.01 ppm |
| Стабильность:: |
Стабильность Светочувствительный. Несовместим с сильными окислителями. |
| Справочник по базе данных CAS: |
7783-96-2(CAS DataBase Reference) |
| Рейтинг продуктов питания EWG: |
1 |
| FDA UNII: |
81M6Z3D1XE |
| Справочник по химии NIST: |
Silver iodide(7783-96-2) |
| Система регистрации веществ EPA: |
Silver iodide (AgI) (7783-96-2) |
Серебро иодид химические свойства, назначение, производство
Химические свойства
Yellow Crystalline Powder
Физические свойства
Light yellow hexagonal crystals or powder; darkens on exposure to light; density 5.68 g/cm3 ; melts at 558°C; vaporizes at 1,506°C; insoluble in water, most acids and ammonium carbonate solution; moderately soluble in concentrated solutions of alkali chloride, bromide, and thiosulfate; readily soluble in solutions of alkali cyanides, iodides and in hot concentrated hydriodic acid.
Использование
Silver iodide is a yellow powder formed by the combination
of a soluble iodide combined with silver nitrate. Silver
iodide could also be formed by exposing metallic silver to the
fumes of bromine as in the daguerreotype process. This was
the primary halide used for all of the 19th century camera
processes until the introduction of the silver bromide gelatin
plate. With the exception of the daguerreotype, all silver iodide
processes relied on physical development using a reducing
agent such as gallic acid, pyrogallic acid, or ferrous sulfate, an
acid restrainer, and excess silver.
Подготовка
Silver iodide is prepared by adding a solution of sodium or potassium iodide to a hot solution of silver nitrate: Ag+ (aq) + Iˉ (aq) → Ag I (s) The precipitate is washed with boiling water. The preparation is done in the dark under ruby red light.
Определение
T3DB: Silver iodide is an iodide of silver. It is a photosensitive solid used in photography, as an antiseptic in medicine, and in rainmaking. Silver is a metallic element with the chemical symbol Ag and atomic number 47. It occurs naturally in its pure, free form, as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite.
Серебро иодид препаратная продукция и сырье
сырьё
препарат
Серебро иодид поставщик
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7783-96-2(Серебро иодид)подобный поиск: