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外観
黄色～黄褐色, 結晶～結晶性粉末
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溶解性
水に可溶, エタノールに不溶。
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用途
メッキ剤、触媒､顔料、酸化剤。
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化学的特性
Ammonium chromate is a yellow crystalline
compound which can be used in solution, which is yellow
with an ammonia odor.
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使用
Ammonium chromate, is used in photography as a sensitizer for gelatin coatings. It's often used in photography, textile printing, and fixing chromate dyes on wool. It is also used as an analytical reagent, catalyst.
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危険性
Toxic by inhalation, strong irritant. Con-
firmed carcinogen.
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安全性プロファイル
A poison. Mutation data reported. See also CHROMIUM COMPOUNDS. A powerful oxidizer. An explosion hazard when shocked or heated. When heated to decomposition it emits toxic fumes of NH3, Cr03, and NOx. Incompatible with reducing agents.
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職業ばく露
It is used to inhibit corrosion and in
dyeing, photography and many chemical reactions. Used as
a fungicide and fire retardant.
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輸送方法
UN3288 Toxic solids, inorganic, n.o.s., Hazard
Class: 6.1; Labels: 6.1-Poisonous materials, Technical
Name Required.
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純化方法
Crystallise it from weak aqueous ammonia (ca 2.5mL/g) by cooling from room temperature. It loses NH3 on heating to form ammonium dichromate. POISONOUS.
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不和合性
A strong oxidizer and an explosive.
Contact with combustible, organic and other readily oxidizable
substances may cause fire and explosions. Hydrazine,
other reducing agents. Corrosive to metals.
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廃棄物の処理
Consult with environmental
regulatory agencies for guidance on acceptable disposal
practices. Generators of waste containing this contaminant
(≥100 kg/mo) must conform with EPA regulations governing
storage, transportation, treatment, and waste disposal.
Addition of a large volume of a reducing agent solution
(hypo, bisulfite or ferrous salt, and acidify with 3 M sulfuric
acid). When reduction is complete, flush to drain with
large volumes of water.
