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A7118512

Rhodium black , 99.9%metalsbasis , 7440-16-6

Synonym(s):
Rh/Al2O3;Rhodium;Rhodium black

CAS NO.:7440-16-6

Empirical Formula: Rh

Molecular Weight: 102.91

MDL number: MFCD00011201

EINECS: 231-125-0

Pack Size Price Stock Quantity
1G RMB10399.20 In Stock
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Update time: 2022-07-08

PRODUCT Properties

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
color  Red
Specific Gravity 12.41
Resistivity 4.33 μΩ-cm, 20°C
Water Solubility  Insoluble
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)

Description and Uses

Rhodium is one of the platinum group elements, and is found at very low concentrations in the Earths crust. Rhodium was discovered by William Hyde Wollaston (England) in 1804. The origin of the name comes from the Greek word rhodon, meaning rose. The plated solid is very corrosion resistant and exceptionally hard. While inert in air and acids, it can produce a violent reaction to chlorine, bromine pentafluoride, bromine trifluoride, and fluorine monoxide.

As an alloy with platinum; as a corrosion-resistant electroplate for protecting silverware from tarnishing; for making high-reflectivity mirrors for cinema projectors, searchlights. Spongy or black rhodium is used as a catalyst in various organic hydrogenation and oxidation reactions.

Safety

Symbol(GHS) 
GHS07,GHS08,GHS02
Signal word  Danger
Hazard statements  H315-H319-H228-H413-H332-H335-H373
Precautionary statements  P210-P240-P241-P280-P370+P378a-P261-P305+P351+P338-P405-P501a-P260-P314-P304+P340-P312a-P403+P233
Hazard Codes  C,Xi,F
Risk Statements  36/38-11-36/37/38-36-34-23
Safety Statements  26-24/25-16-22-36-17-45-36/37/39
RIDADR  UN 3089 4.1/PG 2
OEB D
OEL TWA: 0.1 mg/m3
WGK Germany  3
RTECS  VI9069000
TSCA  Yes
HazardClass  4.1
PackingGroup  III
HS Code  7110390000
IDLA 100 mg Rh/m3

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