Cobalt(II) acetate tetrahydrate

  • Cobaltous acetate tetrahydrate
Formula
(CH3COO)2Co.4H2O
Structure
Description
red monoclinic crystals

Registry Numbers and Inventories.
CAS
6147-53-1
EC (EINECS/ELINCS)
200-755-8
EC Class
harmful, carcinogenic, sensitizing, dangerous for the environment
R 49 22 36/38 42
S 22 53 45
RTECS
AG3325000
RTECS class
Tumorigen; Mutagen; Primary Irritant
UN (DOT)
3335
Merck
12,2494
Beilstein/Gmelin
3731397
Beilstein Reference
4-02-00-00094
Swiss Giftliste 1
G-7978
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
CoC4H6O4 . 4 H2O
Formula mass
249.08
Melting point, °C
140
Density
1.7031 g/cm3 (15.7 C)
Solubility in water
380 g/L (25 C)

Hazards and Protection.
Storage
Keep away from heat and flame. Keep away from sources of ignition. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with skin and eyes. Keep container tightly closed. Avoid ingestion and inhalation.
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 gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Disposal code
15
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizers. .
Decomposition
Acrid smoke and fumes, oxides of cobalt.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Non-combustible, substance itself does not burn but may decompose upon heating to produce irritating, corrosive and/or toxic fumes. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire.
Health
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure limit(s)
0.02 mg/m3 TLV
Carcinogin
G-A3, I-2B
Poison_Class
2 (Very strong toxins)
Exposure effects
Cobalt compounds may cause cancer based upon animal studies.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed. May cause allergic reaction. May cause flushing of the face and ears, mild hypotension, ringing in the ears, and nerve deafness. Ingestion of beer with cobalt additives may cause heart
   Inhalation
Causes delayed lung injury. Causes respiratory tract irritation. May cause asthmatic attacks due to allergic sensitization of the respiratory tract. May cause asthma and shortness of breath.
   Skin
Causes skin irritation. Prolonged and/or repeated contact may cause irritation and/or dermatitis. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
   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.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. Get medical aid. DO NOT use mouth-to-mouth respiration.
   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
3335
Response guide
HS Code
2915 23 00