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Chromsure Produkt Beschreibung

Chromic acid Struktur
7738-94-5
CAS-Nr.
7738-94-5
Bezeichnung:
Chromsure
Englisch Name:
Chromic acid
Synonyma:
Cromic acid;CHROMIC ACID;dihydroxy(diketo)chromium
CBNumber:
CB52130391
Summenformel:
H2CrO4
Molgewicht:
118.01
MOL-Datei:
7738-94-5.mol

Chromsure Eigenschaften

Schmelzpunkt:
196°C
Dichte
2.290
Aggregatzustand
Liquid
Farbe
Clear, orange
Wasserlöslichkeit
HIGHLY Soluble
EPA chemische Informationen
Chromic(VI) acid (7738-94-5)

Sicherheit

RIDADR  UN 1463/1755
Giftige Stoffe Daten 7738-94-5(Hazardous Substances Data)

Chromsure Chemische Eigenschaften,Einsatz,Produktion Methoden

Chemische Eigenschaften

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

Verwenden

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.

Definition

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

Definition

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

Allgemeine Beschreibung

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.

Air & Water Reaktionen

Water soluble.

Reaktivität anzeigen

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].

Hazard

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.

Health Hazard

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'').

Brandgefahr

Behavior in Fire: Containers may explode

Sicherheitsprofil

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

mögliche Exposition

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

Versand/Shipping

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.

Inkompatibilitäten

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

Waste disposal

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

Chromsure Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Chromsure Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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