Melting point :98 °C
Boiling point :735°C
Density :2.03 g/mL at 25 °C(lit.)
storage temp. :Store at +5°C to +30°C.
solubility :H₂O: soluble
form :Solid
color :Red-brown
Specific Gravity :1.948
PH :4 (100g/l, H2O, 20℃)
Water Solubility :362 g/L (20 ºC)
Merck :14,2448
Exposure limits :ACGIH: TWA 0.02 mg/m3
Stability :Stable. Non-flammable. Hygroscopic. Dehydrates at around 41 C and 71 C.
InChIKey :MEYVLGVRTYSQHI-UHFFFAOYSA-L
LogP :-1.031 (est)
CAS DataBase Reference :10026-24-1(CAS DataBase Reference)
IARC :2B (Vol. 86) 2006
EPA Substance Registry System :Cobalt(2+) sulfate heptahydrate (10026-24-1)

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 H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled Sensitisation, respiratory Category 1 Danger P261, P285, P304+P341, P342+P311,P501 H341 Suspected of causing genetic defects Germ cell mutagenicity Category 2 Warning P201,P202, P281, P308+P313, P405,P501 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. P308+P313 IF exposed or concerned: Get medical advice/attention.