SECTION 1. IDENTIFICATION
Product Name: Rhodium(II) Acetate Dimer Dihydrate
Product Number: All applicable American Elements product codes, e.g. RH2-AC-018-C.2HYD
CAS #: 29998-99-0
Relevant identified uses of the substance: Scientific research and development
Supplier details:
American Elements
10884 Weyburn Ave.
Los Angeles, CA 90024
Tel: +1 310-208-0551
Fax: +1 310-208-0351
Emergency telephone number:
Domestic, North America: +1 800-424-9300
International: +1 703-527-3887
SECTION 2. HAZARDS IDENTIFICATION
Classification
This chemical is considered hazardous by the 2012 OSHA Hazard Communication Standard (29 CFR 1910.1200)
Skin Corrosion/irritation
Serious Eye Damage/Eye Irritation Category 2
Label Elements
Signal Word
Warning
Hazard Statements
Causes skin irritation
Causes serious eye irritation
Precautionary Statements
Prevention
Wash face, hands and any exposed skin thoroughly after handling
Wear protective gloves/protective clothing/eye protection/face protection
Skin
IF ON SKIN: Wash with plenty of soap and water
If skin irritation occurs: Get medical advice/attention
Take off contaminated clothing and wash before reuse
Eyes
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing
If eye irritation persists: Get medical advice/attention
Hazards not otherwise classified (HNOC)
None identified
SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS
Component CAS-No Weight %
Rhodium (II) acetate dimer 29998-99-0 100
SECTION 4. FIRST AID MEASURES
Eye Contact Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes.
Obtain medical attention.
Skin Contact Wash off immediately with soap and plenty of water while removing all contaminated
clothes and shoes. Obtain medical attention.
Inhalation Remove from exposure, lie down. Move to fresh air. If breathing is difficult, give oxygen. If
not breathing, give artificial respiration. Obtain medical attention.
Ingestion Clean mouth with water. Get medical attention.
Most important symptoms/effects No data available.
Notes to Physician Treat symptomatically
SECTION 5. FIREFIGHTING MEASURES
Suitable Extinguishing Media Water spray. Carbon dioxide (CO 2). Dry chemical. chemical foam.
Unsuitable Extinguishing Media No data available
Flash Point No data available
Method - No data available
Autoignition Temperature No data available
Explosion Limits
Upper No data available
Lower No data available
Sensitivity to Mechanical Impact No data available
Sensitivity to Static Discharge No data available
Specific Hazards Arising from the Chemical
Explosive properties.
Hazardous Combustion Products
Carbon monoxide (CO) Carbon dioxide (CO2)
Protective Equipment and Precautions for Firefighters
As in any fire, wear self-contained breathing apparatus pressure-demand, MSHA/NIOSH (approved or equivalent) and full
protective gear.
NFPA
Health
2
Flammability
0
Instability
0
Physical hazards
N/A
SECTION 6. ACCIDENTAL RELEASE MEASURES
Personal Precautions Ensure adequate ventilation. Use personal protective equipment.
Environmental Precautions See Section 12 for additional ecological information.
Methods for Containment and Clean
Up
SECTION 7. HANDLING AND STORAGE
Handling Avoid contact with skin and eyes. Do not breathe dust. Do not breathe vapors or spray mist.
Storage Keep in a dry, cool and well-ventilated place. Keep container tightly closed.
SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Exposure Guidelines This product does not contain any hazardous materials with occupational exposure limits
established by the region specific regulatory bodies.
Component ACGIH TLV OSHA PEL NIOSH IDLH
Rhodium (II) acetate dimer TWA: 1 mg/m3 (Vacated) TWA: 0.1 mg/m3 IDLH: 100 mg/m3
TWA: 0.1 mg/m3
Component Quebec Mexico OEL (TWA) Ontario TWAEV
Rhodium (II) acetate dimer TWA: 0.1 mg/m3 TWA: 1 mg/m3
Legend
ACGIH - American Conference of Governmental Industrial Hygienists
OSHA - Occupational Safety and Health Administration
NIOSH IDLH: The National Institute for Occupational Safety and Health Immediately Dangerous to Life or Health
Engineering Measures Ensure adequate ventilation, especially in confined areas. Ensure that eyewash stations
and safety showers are close to the workstation location.
Personal Protective Equipment
Eye/face Protection Wear appropriate protective eyeglasses or chemical safety goggles as described by
OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard
EN166.
Skin and body protection Wear appropriate protective gloves and clothing to prevent skin exposure.
Respiratory Protection Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard
EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if
exposure limits are exceeded or if irritation or other symptoms are experienced.
Hygiene Measures Handle in accordance with good industrial hygiene and safety practice.
SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES
Physical State Powder Solid
Appearance Dark green
Odor No data available
Odor Threshold No data available
pH No data available
Melting Point/Range No data available
Boiling Point/Range No data available - 90 - 194
Flash Point No data available
Evaporation Rate No data available
Flammability (solid,gas) No data available
Flammability or explosive limits
Upper No data available
Lower No data available
Vapor Pressure No data available
Vapor Density 15.24
Relative Density .888
Solubility No data available
Partition coefficient; n-octanol/water No data available
Autoignition Temperature No data available
Decomposition Temperature No data available
Viscosity No data available
Molecular Formula C8 H16 O10 Rh2
Molecular Weight 478.02
SECTION 10. STABILITY AND REACTIVITY
Reactive Hazard None known, based on information available
Stability Stable under normal conditions.
Conditions to Avoid Incompatible products.
Incompatible Materials Strong oxidizing agents
Hazardous Decomposition Products Carbon monoxide (CO), Carbon dioxide (CO2)
Hazardous Polymerization No data available.
Hazardous Reactions None under normal processing.
SECTION 11. TOXICOLOGICAL INFORMATION
Acute Toxicity
Product Information No acute toxicity information is available for this product
Component Information
Toxicologically Synergistic
Products
No data available
Delayed and immediate effects as well as chronic effects from short and long-term exposure
Irritation No data available
Sensitization No data available
Carcinogenicity The table below indicates whether each agency has listed any ingredient as a carcinogen.
Component CAS-No IARC NTP ACGIH OSHA Mexico
Rhodium (II) acetate
dimer
29998-99-0 Not listed Not listed Not listed Not listed Not listed
Mutagenic Effects No data available
Reproductive Effects No data available.
Developmental Effects No data available.
Teratogenicity No data available.
STOT - single exposure None known
STOT - repeated exposure None known
Aspiration hazard No data available
Symptoms / effects,both acute and
delayed
No data available
Endocrine Disruptor Information No data available
Other Adverse Effects The toxicological properties have not been fully investigated.
SECTION 12. ECOLOGICAL INFORMATION
Ecotoxicity
Do not empty into drains.
Persistence and Degradability No data available
Bioaccumulation/ Accumulation No data available.
Mobility No data available.
SECTION 13. DISPOSAL CONSIDERATIONS
Waste Disposal Methods Chemical waste generators must determine whether a discarded chemical is classified as a
hazardous waste. Chemical waste generators must also consult local, regional, and
national hazardous waste regulations to ensure complete and accurate classification.
SECTION 14. TRANSPORT INFORMATION
DOT Not regulated
TDG Not regulated
IATA Not regulated
IMDG/IMO Not regulated
SECTION 15. REGULATORY INFORMATION
International Inventories
Component TSCA DSL NDSL EINECS ELINCS NLP PICCS ENCS AICS IECSC KECL
Rhodium (II) acetate dimer - - - - - X - X - -
Legend:
X - Listed
E - Indicates a substance that is the subject of a Section 5(e) Consent order under TSCA.
F - Indicates a substance that is the subject of a Section 5(f) Rule under TSCA.
N - Indicates a polymeric substance containing no free-radical initiator in its inventory name but is considered to cover the designated
polymer made with any free-radical initiator regardless of the amount used.
P - Indicates a commenced PMN substance
R - Indicates a substance that is the subject of a Section 6 risk management rule under TSCA.
S - Indicates a substance that is identified in a proposed or final Significant New Use Rule
T - Indicates a substance that is the subject of a Section 4 test rule under TSCA.
XU - Indicates a substance exempt from reporting under the Inventory Update Rule, i.e. Partial Updating of the TSCA Inventory Data Base
Production and Site Reports (40 CFR 710(B).
Y1 - Indicates an exempt polymer that has a number-average molecular weight of 1,000 or greater.
Y2 - Indicates an exempt polymer that is a polyester and is made only from reactants included in a specified list of low concern reactants
that comprises one of the eligibility criteria for the exemption rule.
U.S. Federal Regulations
TSCA 12(b) N/A
SARA 311/312 Hazardous Categorization
Acute Health Hazard
Yes
Chronic Health Hazard No
Fire Hazard No
Sudden Release of Pressure Hazard No
Reactive Hazard No
Clean Water Act N/A
Clean Air Act N/A
OSHA Occupational Safety and Health Administration
N/A
CERCLA
N/A
California Proposition 65 This product does not contain any Proposition 65 chemicals
State Right-to-Know N/A
U.S. Department of Transportation
Reportable Quantity (RQ): N
DOT Marine Pollutant N
DOT Severe Marine Pollutant N
U.S. Department of Homeland Security
This product does not contain any DHS chemicals.
Other International Regulations
Mexico - Grade No data available
Canada
This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations (CPR) and
the MSDS contains all the information required by the CPR
WHMIS Hazard Class D2B Toxic materials
SECTION 16. OTHER INFORMATION
Safety Data Sheet according to Regulation (EC) No. 1907/2006 (REACH). The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. American Elements shall not be held liable for any damage resulting from handling or from contact with the above product. See reverse side of invoice or packing slip for additional terms and conditions of sale. COPYRIGHT 1997-2022 AMERICAN ELEMENTS. LICENSED GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY.
The number of electrons in each of Rhodium's shells is [2, 8, 18, 16, 1] and its electron configuration is [Kr] 4d8 5s1. The rhodium atom has a radius of 134 pm and a Van der Waals radius of 195 pm. Rhodium was discovered and first isolated by William Wollaston in 1804. In its elemental form, rhodium has a silvery white metallic appearance. 
Rhodium is a member of the platinum group of metals. It has a higher melting point than platinum, but a lower density. Rhodium is found in ores mixed with other metals such as palladium, silver, platinum, and gold. Rhodium is primarily used as the catalyst in the three-way catalytic converters of automobiles it is also highly valued in jewelry. The name Rhodium originates from the Greek word 'Rhodon,' which means rose.
