Melting point :1232 °C
Boiling point :1800 °C
Density :6 g/mL at 25 °C (lit.)
refractive index :2.705
Flash point :1800°C
storage temp. :Inert atmosphere,Room Temperature
solubility :insoluble in H2O
form :powder
color :red
Specific Gravity :6.
Water Solubility :practically insoluble
Sensitive :Air & Moisture Sensitive
Merck :14,2664
Exposure limits :ACGIH: TWA 1 mg/m3
NIOSH: IDLH 100 mg/m3; TWA 1 mg/m3 Dielectric constant :18.1（Ambient）
Stability :Stable. May be air or light sensitive.
CAS DataBase Reference :1317-39-1(CAS DataBase Reference)
NIST Chemistry Reference :Copper(i) oxide(1317-39-1)
EPA Substance Registry System :Cuprous oxide (1317-39-1)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P 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:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233 Keep container tightly closed. P240 Ground/bond container and receiving equipment. P241 Use explosion-proof electrical/ventilating/lighting/…/equipment. P273 Avoid release to the environment. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.