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Cadmium oxide

Cadmium oxide Structure
CAS No.
1306-19-0
Chemical Name:
Cadmium oxide
Synonyms
CdO;CDON;aska-rid;NCI-C02551;oxocadmium;cadmiumfume;kadmutlenek;CadiuM oxide;Kadmu tlenek;CADMIUM OXIDE
CBNumber:
CB9282559
Molecular Formula:
CdO
Molecular Weight:
128.41
MOL File:
1306-19-0.mol
MSDS File:
SDS
Modify Date:
2024/4/18 11:52:21

Cadmium oxide Properties

Melting point 900°C
Boiling point 1385 °C
Density 8.15 g/mL at 25 °C(lit.)
storage temp. Store below +30°C.
solubility 0.0021g/l
form powder
color brown
Specific Gravity 8.15
Odor Odorless
PH 9-10 (H2O)(aqueous suspension)
Water Solubility insoluble. <0.1 g/100 mL at 20 ºC
Crystal Structure Cubic, Halite Structure - Space Group Fm3m
Merck 14,1623
Exposure limits ACGIH: TWA 0.01 mg/m3; TWA 0.002 mg/m3
NIOSH: IDLH 9 mg/m3
Stability Stable. Incompatible with magnesium.
CAS DataBase Reference 1306-19-0(CAS DataBase Reference)
NIST Chemistry Reference Cadmium oxide(1306-19-0)
EPA Substance Registry System Cadmium oxide (1306-19-0)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS06,GHS08,GHS09
Signal word  Danger
Hazard statements  H330-H341-H350-H361fd-H372-H410
Precautionary statements  P202-P260-P264-P270-P273-P304+P340+P310
Hazard Codes  T,N,T+
Risk Statements  49-22-48/23/25-68-63-62-50/53-26-45
Safety Statements  53-45-61-60
RIDADR  UN 2570 6.1/PG 3
WGK Germany  2
RTECS  EV1925000
TSCA  Yes
HS Code  2825 90 60
HazardClass  6.1
PackingGroup  III
Toxicity LC50 in rats, monkeys (mg/m3): 500, ~15000 (Barrett)
IDLA 9 mg Cd/m3[Unc h]
NFPA 704
0
4 0

Cadmium oxide price More Price(27)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich(India) 244783 Cadmium oxide powder, 99.5% trace metals basis 1306-19-0 100G ₹5380.03 2022-06-14 Buy
Sigma-Aldrich(India) 244783 Cadmium oxide powder, 99.5% trace metals basis 1306-19-0 500G ₹6776.45 2022-06-14 Buy
Sigma-Aldrich 202894 Cadmium oxide ≥99.99% trace metals basis 1306-19-0 5G ₹3344.93 2022-06-14 Buy
Sigma-Aldrich(India) 202894 Cadmium oxide ≥99.99% trace metals basis 1306-19-0 5G ₹3344.93 2022-06-14 Buy
Sigma-Aldrich 202894 Cadmium oxide ≥99.99% trace metals basis 1306-19-0 25G ₹9753.33 2022-06-14 Buy
Product number Packaging Price Buy
244783 100G ₹5380.03 Buy
244783 500G ₹6776.45 Buy
202894 5G ₹3344.93 Buy
202894 5G ₹3344.93 Buy
202894 25G ₹9753.33 Buy

Cadmium oxide Chemical Properties,Uses,Production

Chemical Properties

Cadmium oxide forms brownish-red crystals or a yellow to dark brown amorphous powder.

Physical properties

Occurs in two forms, alpha form—a colorless amorphous powder, and beta form—a reddish-brown crystal; density 6.95 g/cm3 (alpha form) and 8.15 g/cm3 (beta form); decomposes on rapid heating at 900°C; sublimation temperature 1,559°C; insoluble in water and alkalis; dissolves in mineral acids.

Uses

Cadmium oxide is used as an electroplating chemical, catalyst, component of semiconductors, and starting material for PCV heat stabilizers; in glass and ceramic glazes; for production of cadmium electrodes in storage batteries; and in other applications.

Preparation

Cadmium oxide is prepared by the reaction of cadmium vapor with oxygen. The metal is first melted in a steel retort and transported into a heated chamber where it is vaporized. The vapor is reacted with air, and the cadmium oxide formed is collected in a bag house. The particle size of the product depends on the ratio of air to cadmium vapor. The oxide may be further purified and particles of uniform size may be obtained by calcination at low red heat.
Cadmium oxide also may be prepared by several other routes starting with various cadmium salts. The compound can be made by thermal decomposition of cadmium carbonate or cadmium hydroxide:
CdCO3 → CdO + CO2
Cd(OH)2 → CdO + H2O
Similar thermal decomposition of cadmium nitrate or sulfate would yield the oxide.
he oxide. Cadmium oxide also may be made by high temperature oxidation of cadmium sulfide:
2CdS + 3O2 → 2CdO + 2SO2
Finely divided oxide may be obtained by pyrolysis of cadmium salts of carboxylic acids, such as cadmium formate or oxalate.
(COOH)2Cd → CdO + H2O + 2CO
(COO)2Cd → CdO + CO2 + CO

Production Methods

Cadmium oxide is manufactured commercially by distilling cadmium metal from graphite retort and allowing vapor to react with air.

General Description

Brown crystals or brown amorphous powder. Used as an electroplating chemical and in the manufacture of cadmium electrodes. Is a component of silver alloys, phosphors, semiconductors, glass and ceramic glazes. Formerly used by veterinarians to kill worms and parasites.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

Cadmium oxide reacts violently with magnesium.

Hazard

Inhalation of vapor or fume may be fatal. A confirmed carcinogen.

Health Hazard

The lethal inhalation dose of Cadmium oxide in humans is 2,500 mg/m3 for a 1 minute exposure. Lethal exposure has been established at 50 mg (cadmium)/m3 for 1 hour for Cadmium oxide dust and 1/2 hour for the fume. These concentrations may be inhaled without sufficient discomfort to warn worker of exposure. Inhalation may cause acute tracheobronchitis, pneumonitis, and pulmonary edema. Exposure can cause kidney and lung damage. Acute exposure by inhalation may cause death by anoxia. The lowest human toxic inhalation concentration is 8.630 mg/m3/5 hours for the fume. Persons with respiratory disorders should be excluded from contact with Cadmium oxide.

Fire Hazard

When heated to decomposition, Cadmium oxide emits toxic fumes of cadmium. (Non-Specific -- Cadmium Compounds) Fire may produce irritating or poisonous gases. Runoff from fire control or dilution water may cause pollution. Oxides of cadmium react explosively with magnesium when heated.

Safety Profile

Confirmed human carcinogen with experimental neoplastigenic data. Poison by ingestion, inhalation, and intraperitoneal routes. An experimental teratogen. Other experimental reproductive effects. Human systemic effects by inhalation include: change in the sense of smell, change in heart rate, blood pressure increase, an excess of protein in the urine, and other kidney or bladder changes. Mixtures with magnesium explode when heated. When heated to decomposition it emits toxic fumes of Cd. See also CADMIUM COMPOUNDS.

Potential Exposure

Cadmium oxide is used as an electroplating chemical and in the manufacture of semiconductors and cadmium electrodes; synthesis of other cadmium salts; a component of silver alloys, phosphorus, glass and ceramic glazes, semiconductors, and batteries. Used as a vermicide

Shipping

UN2570 Cadmium compounds, Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.

Incompatibilities

Oxides of cadmium react explosively with magnesium, especially when heated. Heat above 700C causes slow decomposition. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); light metals: contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides, hydrogen sulfide, hydrazine nitrate. May ignite combustibles, such as wood, paper, oil, etc

Waste Disposal

Form nitrate with HNO3, precipitate with H2S, filter, package and return to supplier.

Global( 230)Suppliers
Supplier Tel Country ProdList Advantage Inquiry
JSK Chemicals +919879767970 Gujarat, India 3756 58 Inquiry
Merck Ltd +91-2262109800 +91-2262109000 Maharashtra, India 272 58 Inquiry
Delcra Chemicals +91-2226852116 +91-9820047783 Maharashtra, India 11 58 Inquiry
Ashoka Meta Chem Industries +91-9820093526 +91-9820033981 Maharashtra, India 10 58 Inquiry
Scientific OEM +91-22- 2343 7546 / 2341 3094 New Delhi, India 1996 38 Inquiry
Euroasia Trans Continental +91 22 56349035-36 New Delhi, India 519 47 Inquiry
ALPHA CHEMIKA +91-22-22061123 +91-22-66382501 Mumbai, India 1681 43 Inquiry
Maas Pharma Chemicals +91-9958666224 Delhi, India 1607 58 Inquiry
FINAR LTD +91 - 2717 - 616717 New Delhi, India 660 58 Inquiry
Otto Chemie Pvt. Ltd. +91 9820041841 Mumbai, India 5873 58 Inquiry

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