Cerium(III) 2-ethylhexanoate, 49% in 2-ethylhexanoic acid, Ce 12% ALFAA40451 SDS

Page 1 / 8 SAFETY DATA SHEET Revision Date 04-Aug-2026 Version 6

ALFAA40451

Cerium(III) 2-ethylhexanoate, 49% in 2-ethylhexanoic acid, Ce 12%

SECTION 1. IDENTIFICATION OF THE SUBSTANCE/MIXTURE AND OF THE COMPANY/UNDERTAKING

产品说明:产品说明:产品说明:产品说明: 2-乙基己酸铈(III),2-乙基己酸铈(III),2-乙基己酸铈(III),2-乙基己酸铈(III),49%49%49%49% 在2-乙基己酸中在2-乙基己酸中在2-乙基己酸中在2-乙基己酸中 Product Description: Cerium(III) 2-ethylhexanoate, 49% in 2-ethylhexanoic acid, Ce 12%

Cat No. : 40451 Molecular Formula C24 H45 CeO6

Supplier Avocado Research Chemicals Ltd. (Part of Thermo Fisher Scientific) Shore Road, Heysham Lancashire, LA3 2XY, United Kingdom Office Tel: +44 (0) 1524 850506 Office Fax: +44 (0) 1524 850608

Emergency Telephone Number For information US call: 001-800-227-6701 / Europe call: +32 14 57 52 11 Emergency Number US:001-201-796-7100 / Europe: +32 14 57 52 99 CHEMTREC Tel. No. US:001-800-424-9300 / Europe:001-703-527-3887

E-mail address begel.sdsdesk@thermofisher.com

Recommended Use Laboratory chemicals. Uses advised against No Information available

SECTION 2. HAZARD IDENTIFICATION

Physical State Appearance Odor Liquid Viscous liquid No information available No information available

Emergency Overview May damage fertility or the unborn child.

Classification of the substance or mixture

Reproductive Toxicity Category 1B

Label Elements

Signal Word Danger

Hazard Statements H360 - May damage fertility or the unborn child

Precautionary Statements

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ALFAA40451 SAFETY DATA SHEET Revision Date 04-Aug-2026Page 2 / 8 Cerium(III) 2-ethylhexanoate, 49% in 2-ethylhexanoic acid, Ce 12% ______________________________________________________________________________________________ Prevention P201 - Obtain special instructions before use P202 - Do not handle until all safety precautions have been read and understood P280 - Wear protective gloves/protective clothing/eye protection/face protection Response P308 + P313 - IF exposed or concerned: Get medical advice/attention Storage P403 - Store in a well-ventilated place Disposal P501 - Dispose of contents/ container to an approved waste disposal plant

Physical and Chemical Hazards None identified. Health Hazards May damage fertility or the unborn child. Environmental hazards Contains no substances known to be hazardous to the environment or not degradable in waste water treatment plants. Is not likely mobile in the environment due its low water solubility. Spillage unlikely to penetrate soil. The product is insoluble and sinks in water.

Other Hazards

Toxicity to Soil Dwelling Organisms. Toxic to terrestrial vertebrates. This product does not contain any known or suspected endocrine disruptors.

SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS

Component CAS No Weight % 2-Ethylhexanoic acid 149-57-5 51.00 Cerium 2-ethylhexoate 56797-01-4 49.00

SECTION 4. FIRST AID MEASURES

General Advice If symptoms persist, call a physician.

Eye Contact Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Get medical attention.

Skin Contact Wash off immediately with plenty of water for at least 15 minutes. If skin irritation persists, call a physician.

Inhalation Remove to fresh air. If not breathing, give artificial respiration. Get medical attention if symptoms occur.

Ingestion Clean mouth with water and drink afterwards plenty of water.

Most important symptoms and effects None reasonably foreseeable.

Self-Protection of the First Aider Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and prevent spread of contamination.

Notes to Physician Treat symptomatically.

SECTION 5. FIRE-FIGHTING MEASURES

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Suitable Extinguishing Media Carbon dioxide (CO 2). Powder. Water spray. In case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion.

Extinguishing media which must not be used for safety reasons No information available.

Specific Hazards Arising from the Chemical Thermal decomposition can lead to release of irritating gases and vapors.

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.

SECTION 6. ACCIDENTAL RELEASE MEASURES

Personal Precautions Ensure adequate ventilation. Use personal protective equipment as required.

Environmental Precautions Should not be released into the environment. Do not flush into surface water or sanitary sewer system. Do not allow material to contaminate ground water system.

Methods for Containment and Clean Up Soak up with inert absorbent material. Keep in suitable, closed containers for disposal.

Refer to protective measures listed in Sections 8 and 13.

SECTION 7. HANDLING AND STORAGE

Handling Wear personal protective equipment/face protection. Ensure adequate ventilation. Do not get in eyes, on skin, or on clothing. Avoid ingestion and inhalation.

Storage Keep container tightly closed in a dry and well-ventilated place.

Specific Use(s) Use in laboratories

SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION

Control Parameters

Component China ACGIH TLV OSHA PEL NIOSH 2-Ethylhexanoic acid - TWA: 5 mg/m3

Legend

ACGIH - American Conference of Governmental Industrial Hygienists Monitoring methods MDHS 91 Metals and metalloids in workplace air by X-ray fluorescence spectrometry MDHS 99 Metals in air by ICP-AES

Exposure Controls

Engineering Measures ______________________________________________________________________________________________ Page 3

ALFAA40451 SAFETY DATA SHEET Revision Date 04-Aug-2026Page 4 / 8 Cerium(III) 2-ethylhexanoate, 49% in 2-ethylhexanoic acid, Ce 12% ______________________________________________________________________________________________ Ensure adequate ventilation, especially in confined areas. Wherever possible, engineering control measures such as the isolation or enclosure of the process, the introduction of process or equipment changes to minimise release or contact, and the use of properly designed ventilation systems, should be adopted to control hazardous materials at source.

Personal protective equipment

Eye Protection Wear safety glasses with side shields (or goggles) (European standard - EN 166)

Hand Protection Protective gloves

Glove material Breakthrough time Glove thickness EU standard Glove comments Nitrile rubber 480 minutes 0.4 mm EN 374 (minimum requirement) Inspect gloves before use. Please observe the instructions regarding permeability and breakthrough time which are provided by the supplier of the gloves. (Refer to manufacturer/supplier for information) Ensure gloves are suitable for the task: Chemical compatability, Dexterity, Operational conditions, User susceptibility, e.g. sensitisation effects, also take into consideration the specific local conditions under which the product is used, such as the danger of cuts, abrasion. Remove gloves with care avoiding skin contamination.

Skin and body protection Long sleeved clothing

Respiratory Protection When workers are facing concentrations above the exposure limit they must use appropriate certified respirators. To protect the wearer, respiratory protective equipment must be the correct fit and be used and maintained properly

Large scale/emergency use In case of insufficient ventilation, wear suitable respiratory equipment Recommended Filter type: Multi-purpose/ABEK conforming to EN14387

Small scale/Laboratory use Use a NIOSH/MSHA or European Standard EN 149:2001 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced. When RPE is used a face piece Fit Test should be conducted

Hygiene Measures Handle in accordance with good industrial hygiene and safety practice.

Environmental exposure controls Prevent product from entering drains.

SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance Physical State Liquid Viscous liquid

Odor No information available Odor Threshold No data available pH Not applicable Melting Point/Range No data available Softening Point No data available Boiling Point/Range No information available Flash Point > 110 °C / > 230 °F Method - No information available Evaporation Rate No data available Flammability (solid,gas) Not applicable Liquid Explosion Limits No data available

Vapor Pressure 23 hPa @ 20 °C Vapor Density No data available (Air = 1.0) Specific Gravity / Density 1.08 g/cm3 @ 20 °C Bulk Density Not applicable Liquid Water Solubility Immiscible Solubility in other solvents No information available Partition Coefficient (n-octanol/water) Component log Pow ______________________________________________________________________________________________ Page 4

ALFAA40451 SAFETY DATA SHEET Revision Date 04-Aug-2026Page 5 / 8 Cerium(III) 2-ethylhexanoate, 49% in 2-ethylhexanoic acid, Ce 12% ______________________________________________________________________________________________ 2-Ethylhexanoic acid 2.7 Autoignition Temperature No data available Decomposition Temperature No data available Viscosity No data available Explosive Properties No information available Oxidizing Properties No information available

Molecular Formula C24 H45 CeO6 Molecular Weight 569.74

SECTION 10. STABILITY AND REACTIVITY

Stability Store under inert atmosphere.

Hazardous Reactions None under normal processing. Hazardous Polymerization No information available.

Conditions to Avoid None known.

Materials to avoid Oxidizing agent.

Hazardous Decomposition Products Carbon monoxide (CO). Carbon dioxide (CO2). Cerium oxide.

SECTION 11. TOXICOLOGICAL INFORMATION

Product Information

(a) acute toxicity; Toxicology data for the components

Component LD50 Oral LD50 Dermal LC50 Inhalation 2-Ethylhexanoic acid LD50 = 1600 mg/kg ( Rat ) LD50 = 1140 mg/kg ( Rabbit )

Cerium 2-ethylhexoate 500 (ATE) 1100 (ATE) 1.5 (ATE)

(b) skin corrosion/irritation; No data available

(c) serious eye damage/irritation; No data available

(d) respiratory or skin sensitization; Respiratory No data available Skin No data available

(e) germ cell mutagenicity; No data available

(f) carcinogenicity; No data available

There are no known carcinogenic chemicals in this product

(g) reproductive toxicity; Category 1B

(h) STOT-single exposure; No data available

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ALFAA40451 SAFETY DATA SHEET Revision Date 04-Aug-2026Page 6 / 8 Cerium(III) 2-ethylhexanoate, 49% in 2-ethylhexanoic acid, Ce 12% ______________________________________________________________________________________________ (i) STOT-repeated exposure; No data available

Target Organs None known.

(j) aspiration hazard; No data available

Symptoms / effects,both acute and No information available delayed

SECTION 12. ECOLOGICAL INFORMATION

Ecotoxicity effects Contains a substance which is:. Harmful to aquatic organisms. The product contains following substances which are hazardous for the environment. May cause long-term adverse effects in the environment. Do not allow material to contaminate ground water system.

Component Freshwater Fish Water Flea Freshwater Algae Microtox 2-Ethylhexanoic acid LC50: = 70 mg/L, 96h EC50: = 85.4 mg/L, 48h EC50: = 41 mg/L, 96h EC50 = 110 mg/L 17 h (Pimephales promelas) (Daphnia magna) (Desmodesmus EC50 = 670 mg/L 30 subspicatus) min EC50: = 61 mg/L, 72h (Desmodesmus subspicatus)

Persistence and Degradability Product contains heavy metals. Discharge into the environment must be avoided. Special pre-treatment is necessary Persistence Immiscible with water, May persist. Degradation in sewage Contains substances known to be hazardous to the environment or not degradable in waste treatment plant water treatment plants.

Bioaccumulative Potential May have some potential to bioaccumulate; Product has a high potential to bioconcentrate

Component log Pow Bioconcentration factor (BCF) 2-Ethylhexanoic acid 2.7 No data available

Mobility in soil Spillage unlikely to penetrate soil The product is insoluble and sinks in water Is not likely mobile in the environment due its low water solubility

Endocrine Disruptor Information This product does not contain any known or suspected endocrine disruptors Persistent Organic Pollutant This product does not contain any known or suspected substance Ozone Depletion Potential This product does not contain any known or suspected substance

SECTION 13. DISPOSAL CONSIDERATIONS

Waste from Residues/Unused Waste is classified as hazardous. Dispose of in accordance with the European Directives Products on waste and hazardous waste. Dispose of in accordance with local regulations.

Contaminated Packaging Dispose of this container to hazardous or special waste collection point.

Other Information Do not flush to sewer. Waste codes should be assigned by the user based on the application for which the product was used. Do not empty into drains.

SECTION 14. TRANSPORT INFORMATION

Road and Rail Transport Not Regulated

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ALFAA40451 SAFETY DATA SHEET Revision Date 04-Aug-2026Page 7 / 8 Cerium(III) 2-ethylhexanoate, 49% in 2-ethylhexanoic acid, Ce 12% ______________________________________________________________________________________________

IMDG/IMO Not regulated

IATA Not regulated

Special Precautions for User No special precautions required

SECTION 15. REGULATORY INFORMATION

International Inventories China, X = listed, Australia, U.S.A. (TSCA), Canada (DSL/NDSL), Europe (EINECS/ELINCS/NLP), Australia (AICS), Korea (KECL), China (IECSC), Japan (ENCS), Philippines (PICCS), Taiwan (TCSI), Japan (ISHL), New Zealand (NZIoC), Japan (ISHL).

Component The List of IECSC EINECS TSCA DSL PICCS ENCS ISHL AICS KECL Inventory of dangerous Hazardous goods GB Chemicals 12268 - (2015 2012 Edition) 2-Ethylhexanoic acid - - X 205-743-6 X X X X X X KE-13740 Cerium 2-ethylhexoate - - X 260-386-3 X X X X X X KE-13744

National Regulations

SECTION 16. OTHER INFORMATION

Prepared By Health, Safety and Environmental Department Revision Date 04-Aug-2026 Revision Summary SDS sections updated.

Training Advice Chemical hazard awareness training, incorporating labelling, Safety Data Sheets (SDS), Personal Protective Equipment (PPE) and hygiene.

Legend

CAS - Chemical Abstracts Service TSCA - United States Toxic Substances Control Act Section 8(b) Inventory EINECS/ELINCS - European Inventory of Existing Commercial Chemical DSL/NDSL - Canadian Domestic Substances List/Non-Domestic Substances/EU List of Notified Chemical Substances Substances List PICCS - Philippines Inventory of Chemicals and Chemical Substances ENCS - Japanese Existing and New Chemical Substances IECSC - Chinese Inventory of Existing Chemical Substances AICS - Australian Inventory of Chemical Substances KECL - Korean Existing and Evaluated Chemical Substances NZIoC - New Zealand Inventory of Chemicals

WEL - Workplace Exposure Limit TWA - Time Weighted Average ACGIH - American Conference of Governmental Industrial Hygienists IARC - International Agency for Research on Cancer DNEL - Derived No Effect Level PNEC - Predicted No Effect Concentration RPE - Respiratory Protective Equipment LD50 - Lethal Dose 50% LC50 - Lethal Concentration 50% EC50 - Effective Concentration 50% NOEC - No Observed Effect Concentration POW - Partition coefficient Octanol:Water PBT - Persistent, Bioaccumulative, Toxic vPvB - very Persistent, very Bioaccumulative

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ALFAA40451 SAFETY DATA SHEET Revision Date 04-Aug-2026Page 8 / 8 Cerium(III) 2-ethylhexanoate, 49% in 2-ethylhexanoic acid, Ce 12% ______________________________________________________________________________________________ ICAO/IATA - International Civil Aviation Organization/International Air IMO/IMDG - International Maritime Organization/International Maritime Transport Association Dangerous Goods Code ADR - European Agreement Concerning the International Carriage of MARPOL - International Convention for the Prevention of Pollution from Dangerous Goods by Road Ships OECD - Organisation for Economic Co-operation and Development ATE - Acute Toxicity Estimate BCF - Bioconcentration factor VOC - (Volatile Organic Compound)

Key literature references and sources for data https://echa.europa.eu/information-on-chemicals Suppliers safety data sheet, Chemadvisor - LOLI, Merck index, RTECS

Physical hazards On basis of test data Health Hazards Calculation method Environmental hazards Calculation method

Disclaimer The information provided in this Safety Data Sheet is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guidance for safe handling, use, processing, storage, transportation, disposal and release and is not to be considered a warranty or quality specification. The information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process, unless specified in the text

End of Safety Data Sheet

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