Rhodium

Melting point :1966 °C (lit.)
Boiling point :3727 °C (lit.)
Density :12.41 g/cm3 (lit.)
storage temp. :Inert atmosphere,Room Temperature
solubility :insoluble in acid solutions, slightly soluble in aqua regia
form :wire
Specific Gravity :12.41
color :Red
PH :0.5 (20°C in H2O)
Resistivity :4.33 μΩ-cm, 20°C
Water Solubility :Insoluble
Electrical Conductivity :2.3× 10⁷S/m
Thermal Conductivity :150 W/(m·K)
Merck :14,8186
Exposure limits :ACGIH: Ceiling 2 ppm
OSHA: Ceiling 5 ppm(7 mg/m3)
NIOSH: IDLH 50 ppm; Ceiling 5 ppm(7 mg/m3) InChI :1S/Rh
InChIKey :MHOVAHRLVXNVSD-UHFFFAOYSA-N
SMILES :[Rh]
Hardness, Vickers :800
Modulus of Elasticity :359 GPa
Hardness, Brinell :722, Converted from Vickers for 3000 kg load/10 mm ball Brinell test.
Hardness, Rockwell A :83, Converted from Vickers.
Hardness, Rockwell C :63, Converted from Vickers.
Hardness, Rockwell B :51, Converted from Vickers.
CAS DataBase Reference :7440-16-6(CAS DataBase Reference)
NIST Chemistry Reference :Rhodium(7440-16-6)
EPA Substance Registry System :Rhodium (7440-16-6)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H228 Flammable solid Flammable solids Category 1 Category 2 Danger Warning P210, P240,P241, P280, P370+P378 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501 H413 May cause long lasting harmful effects to aquatic life Hazardous to the aquatic environment, long-term hazard Category 4
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P240 Ground/bond container and receiving equipment. P241 Use explosion-proof electrical/ventilating/lighting/…/equipment. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection. P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P314 Get medical advice/attention if you feel unwell. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P405 Store locked up.