Melting point :°Cd ec.)
Density :3.597 g/mL at 25 °C(lit.)
vapor pressure :0Pa at 20℃
storage temp. :Inert atmosphere,Room Temperature
solubility :slightly soluble in H2O; soluble in acid solutions
form :Powder
Specific Gravity :3.597
color :Pink to purple
PH :9.15(1 mM solution);9.15(10 mM solution);9.15(100 mM solution)
Water Solubility :Soluble in acids and ammonia. Very slightly soluble in water. Insoluble in dilute alkalis.
Sensitive :Air Sensitive
Merck :14,2442
Solubility Product Constant (Ksp) :pKsp: 14.23
Exposure limits :ACGIH: TWA 0.02 mg/m3
Stability :Stability
CAS DataBase Reference :21041-93-0(CAS DataBase Reference)
EPA Substance Registry System :Cobalt hydroxide (Co(OH)2) (21041-93-0)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501 H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled Sensitisation, respiratory Category 1 Danger P261, P285, P304+P341, P342+P311,P501 H350 May cause cancer Carcinogenicity Category 1A, 1B Danger H360 May damage fertility or the unborn child Reproductive toxicity Category 1A, 1B Danger H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P302+P352 IF ON SKIN: wash with plenty of soap and water. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.