Cadmium

Formula
Cd
Structure
Description
Silver-white, blue-tinged, lustrous, odorless, solid.
Uses
In electroplating of automotive, aircraft & electronic parts, marine equipment & industrial machinery, in prepn of cadmium sulfides, cadmium selenides & mixt containing these salts for use as pigments (incl phosphors).

Registry Numbers and Inventories.
CAS
7440-43-9
EC (EINECS/ELINCS)
231-152-8
EC Class
carcinogenic, harmful
R 49 E20/21/22
S 53 22 36/37 45
RTECS
EU9800000
RTECS class
Tumorigen; Mutagen; Reproductive Effector; Human Data
UN (DOT)
2570
Merck
12,1649
Beilstein/Gmelin
16276 (G)
RCRA
D006
Swiss Giftliste 1
G-9381
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
Cd
Formula mass
112.41
Melting point, °C
321
Boiling point, °C
765
Vapor pressure, mmHg
1.5E-11 (25 C)
Vapor density (air=1)
3.9
Density
8.642 g/cm3 (20 C)
Solubility in water
Insoluble
Thermal expansion
1.5E-5/K (20 C)
Heat of fusion
6.2 kJ/mol
Heat of vaporization
112.1 kJ/mol

Hazards and Protection.
Storage
Keep away from heat and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Do not expose to air. Store under an inert atmosphere.
Handling
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Use spark-proof tools and explosion proof equipment. Avoid contact with skin and eyes. Do not breathe dust, vapor, mist, or gas. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. Do not ingest or inhale. Handle under an inert atmosphere. Store protected from air. Use only in a chemical fume hood. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. Place under an inert atmosphere.
Disposal code
15
Stability
Oxidizes when exposed to air. Easily tarnishes in moist air. Powder or liquid is pyrophoric.
Incompatibilities
Air, nitric acid, hydrochloric acid, hydrazoic acid, nitryl fluoride, ammonium nitrate, zinc, oxidizing agents, acids, hydrogen azide, potassium, sulfur, selenium, tellurium, metals, carbonates, cyanides (e.g. potassium cyanide, sodium cyanide), hydroxides, reducing agents (strong, e.g. aluminum carbide, chlorosilane, hydrogen phosphide, lithium hydride).
Decomposition
Nitrogen oxides, toxic cadmium oxide fumes.

Fire.
Autoignition, °C
250
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dust can be an explosion hazard when exposed to heat or flame. Flammable solid. May burn rapidly with flare burning effect. May re-ignite after fire is extinguished. Dangerous fire hazard in the form of dust when exposed to heat or flame. Extinguishing media: Do NOT use water directly on fire. Use dry chemical to fight fire. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
Moderate - dust when exposed to heat a flame or by chemical reaction with oxidizing agents.
Hazards
Flammable in powder form. Combustible.
Combustion products
When heated to a high temperature it emits toxic fumes of cadmium.
Health
2
 
Flammability
2
 
 
Reactivity
0
 

Health.
Exposure limit(s)
OSHA PEL: 1910.1027 TWA 0.005 mg/m3 NIOSH REL: Ca See Appendix A *Note: PEL and REL apply to all Cd compounds (as Cd). NIOSH IDLH: Potential occupational carcinogen 9 mg/m3 (as Cd)
Carcinogin
O, G-A2, I-1, N-1, CP65
Poison_Class
-
Exposure effects
May cause respiratory tract cancer. Repeated inhalation may cause chronic bronchitis. Chronic inhalation may cause nasal septum ulceration and perforation. Cadmium and compounds may cause lung, liver and kidney damage and lung and prostrate cancer in humans. May cause loss of smell, emphysema, anemia, bone demineralization, and lung fibrosis.
   Ingestion
Harmful if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Ingestion may produce fluid loss, acute renal failure, and cardiopulmonary depression.
   Inhalation
May be fatal if inhaled. Inhalation of fumes may cause metal fume fever, which is characterized by flu-like symptoms with metallic taste, fever, chills, cough, weakness, chest pain, muscle pain and increased white blood cell count. Damage may be delayed. May cause nausea, vomiting, abdominal pain, diarrhea, chest tightness, weakness, and delayed pulmonary edema. In humans inhalation causes proteinuria, an excess of protein in the urine.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
2570
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
CDX
 
HS Code
8107 20 00