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クロム酸

クロム酸 化学構造式
7738-94-5
CAS番号.
7738-94-5
化学名:
クロム酸
别名:
クロム酸;(テトラオキシドクロム酸)二水素
英語化学名:
Chromic acid
英語别名:
Cromic acid;CHROMIC ACID;dihydroxy(diketo)chromium
CBNumber:
CB52130391
化学式:
H2CrO4
分子量:
118.01
MOL File:
7738-94-5.mol

クロム酸 物理性質

融点 :
196°C
比重(密度) :
2.290
外見 :
Liquid
色:
Clear, orange
水溶解度 :
HIGHLY Soluble
EPAの化学物質情報:
Chromic acid (H2CrO4)(7738-94-5)

安全性情報

RIDADR  UN 1463/1755
有毒物質データの 7738-94-5(Hazardous Substances Data)

クロム酸 価格

メーカー 製品番号 製品説明 CAS番号 包装 価格 更新時間 購入

クロム酸 化学特性,用途語,生産方法

用途

金属表面仕上げ剤

化学的特性

Chromic acid is a dark purplish-red odorless flakes or crystalline powder

使用

Chemicals (chromates, oxidizing agents, catalysts), chromium-plating intermediate, medicine (caustic), process engraving, anodizing, ceramic glazes, colored glass, metal cleaning, inks, tanning, paints, textile mordant, etchant for plastics.

定義

The name is in common use, although the true chromic acid, H2CrO4, exists only in solution.

定義

chromic acid: A hypothetical acid,H2CrO4, known only in chromatesalts.

一般的な説明

Chromic acid is a dark purplish red solid, exists only in solution. The hydrate of chromiumoxide, it is used in electroplating baths. Chromic acid is soluble in water with the release of heat. The material itself is noncombustible but Chromic acid will accelerate the burning of combustible materials. Its solution is corrosive to metals and tissue.

空気と水の反応

Water soluble.

反応プロフィール

A very powerful oxidizing agent, confirmed human carcinogen. Upon contact with reducing reagents Chromic acid can cause a violent explosion, in contact with organic matter Chromic acid may cause a violent oxidation leading to ignition. Dangerously reactive with acetone, alcohols, alkali metals (sodium, potassium), ammonia, arsenic, dimethylformamide, hydrogen sulfide, phosphorus, peroxyformic acid, pyridine, selenium, sulfur, and many other chemicals [Sax, 9th ed., 1996, p. 852]. When mixed with sulfuric acid for glass cleaning operations, used solution in closed bottle may explode due to internal pressure of carbon dioxide arising from contamination by carbon compounds [Bryson, W. R., Chem. Brit., 1975, 11, p. 377].

危険性

A human carcinogen. A poison. Corrosive to skin. Powerful oxidizing agent, may explode on contact with reducing agents, may ignite on contact with organic materials. Upper respiratory tract irritant.

健康ハザード

Very irritating to eyes and respiratory tract. Ingestion causes severe gastrointestinal symptoms. Contact with eyes or skin causes burns; prolonged contact produces dermatitis (``chrome sores'').

火災危険

Behavior in Fire: Containers may explode

安全性プロファイル

Confirmed human carcinogen. Poison by subcutaneous route. Mutation data reported. A powerful oxidzer. A powerful irritant of skin, eyes, and mucous membranes. Can cause a dermatitis, bronchoasthma, “chrome holes,” damage to the eyes. Dangerously reactive. Incompatible with acetic acid, acetic anhydride, tetrahydronaphthalene, acetone, alcohols, alkali metals, ammonia, arsenic, bromine penta fluoride, butyric acid, n,ndimethylformamide, hydrogen sulfide, peroxyformic acid, phosphorus, potassium hexacyanoferrate, pyridme, selenium

職業ばく露

n chromium plating; medicine, ceramic glazers, and paints.

応急処置

Move victim to fresh air. Call 911 or emergency Medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. For minor skin contact, Chromic(VI) Acid 833 Avoid spreading material on unaffected skin. Keep victim warm and quiet. Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Medical observation is recommended for 24 to 48 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized paramedic may consider administering a drug or other inhalation therapy

輸送方法

UN1463 Chromium trioxide, anhydrous, Hazard Class: 5.1; Labels: 5.1-Oxidizer, 6.1-Poisonous materials, 8-Corrosive material. UN1755 (solution) Chromic acid, solid, Hazard class: 8; Labels: 8-Corrosive material.

不和合性

A strong oxidizer. Aqueous solution is strongly acidic. Reacts with acetic acid, acetic anhydride, acetone, anthracene, chromous sulfide; diethyl ether; dimethyl formamide; ethanol, hydrogen sulfide; methanol, naphthalene, camphor, glycerol, potassium ferricyanide, pyridine, turpentine, combustibles; organics, and other easily oxidized materials (such as paper, wood, sulfur, aluminum, and plastics). Attacks metals in presence of moisture

廃棄物の処理

Chemical reduction to chromium(III) can be followed by land fill disposal of the sludge.

クロム酸 上流と下流の製品情報

原材料

準備製品


クロム酸 生産企業

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