Reported in EPA TSCA Inventory.

OSHA PEL: TWA Metal, Fume, Insol Compounds: 0.1 mg(Rh)/m³; Sol Compounds: 0.001 mg(Rh)/m³
ACGIH TLV: TWA (Metal) 1 mg/m³, (insoluble compounds as Rh) 1 mg/m³, (soluble compounds as Rh) 0.01 mg/m³
NIOSH REL: (Rhodium (as Rh)): TWA 0.1 mg/m³

The Rhodium, with the CAS registry number 7440-16-6, is also known as Rhodium, soluble compounds. It belongs to the product categories of Inorganics; Catalysts for Organic Synthesis; Classes of Metal Compounds; Heterogeneous Catalysts; Rh (Rhodium) Compounds; Synthetic Organic Chemistry; Transition Metal Compounds; Chemical Synthesis; RCertified Reference Materials (CRMs); Reactor Neutron Dosimetry; Reactor Neutron Dosimetry Certified Reference Materials (CRMs); Alphabetic; Application CRMs; Certified Reference Materials (CRMs); Industrial Raw Materials Analytical Standards; Matrix CRMs; Fuel Cell Catalysts Chemical Synthesis; Alternative Energy; Catalysis and Inorganic Chemistry; Materials Science; Rhodium; AA Standard Solutions Spectroscopy; Chloride Analytical Standards; AAS; Matrix Selection; Reference/Calibration Standards; RSpectroscopy; Single Solution; Standard Solutions; Metal and Ceramic Science; Metals. Its EINECS registry number is 233-397-6. Its IUPAC name is called rhodium.

Preparation: The industrial extraction of rhodium is complex as the metal occurs in ores mixed with other metals such as palladium, silver, platinum, and gold. It is found in platinum ores and extracted as a white inert metal which is very difficult to fuse.

Uses of Rhodium: it can be used in spectrometry, rhodium or black rhodium sponge used as organic hydrogenation and oxidation catalysts. It also can be used as hydrogenation catalyst, such as for benzene hydrogenation.

Rhodium is a chemical element that is a rare, silvery-white, hard and chemically inert transition metal and a member of the platinum group. It has the chemical symbol Rh and atomic number 45. It is one of the rarest precious metals and, with a price of about US$80,000/kg in 2010, is the most expensive member of that class. Rhodium is inert against corrosion and most aggressive chemicals, and because of that and its rarity, rhodium is usually alloyed with platinum or palladium and applied in high-temperature and corrosion-resistive coatings. The primary use of this element is in automobiles as a catalytic converter, which changes harmful emissions from the engine into less polluting gases. Rhodium is used as an alloying agent for hardening and improving the corrosion resistance of platinum and palladium.

When you are using this chemical, please be cautious about it as the following:
This chemical may cause inflammation to the skin or other mucous membranes. This chemical may destroy living tissue on contact and may cause burns. It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. Whenever you will contact it, please wear suitable protective clothing, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)Canonical SMILES: [Rh]
(2)InChI: InChI=1S/Rh
(3)InChIKey: MHOVAHRLVXNVSD-UHFFFAOYSA-N