# Tris\(2,2,6,6\-tetramethyl\-3,5\-heptanedionato\)ytterbium \(III\) SDS – Avocado Research Chemicals Ltd\. \(Part of Thermo Fisher Scientific\) Text extracted from the original PDF. Tables, images, symbols and OCR may differ. Check the original PDF for safety information. - **Document title:** Tris\(2,2,6,6\-tetramethyl\-3,5\-heptanedionato\)ytterbium \(III\) SDS – Avocado Research Chemicals Ltd\. \(Part of Thermo Fisher Scientific\) - **Publisher:** Avocado Research Chemicals Ltd\. \(Part of Thermo Fisher Scientific\) - **Material:** Tris\(2,2,6,6\-tetramethyl\-3,5\-heptanedionato\)ytterbium \(III\) - **CAS number:** 15492\-52\-1 - **Product code / grade:** ALFAA39581 - **Document type:** SDS - **Original language:** English - **Region:** United Kingdom - **Revision date:** 22\-Jul\-2026 - **Page count:** 8 - **Original filename:** thermofisher\-ALFAA39581\-Ytterbium\-thd\-EN\.pdf - **RESDS page:** https://resds\.com/document/tris\-2\-2\-6\-6\-tetramethyl\-3\-5\-heptanedionato\-ytterbium\-iii\-sds\-avocado\-research\-chemicals\-ltd\-part\-of\-thermo\-en\-81e7d850f1 - **Original PDF:** https://resds\.com/pdf/tris\-2\-2\-6\-6\-tetramethyl\-3\-5\-heptanedionato\-ytterbium\-iii\-sds\-avocado\-research\-chemicals\-ltd\-part\-of\-thermo\-en\-81e7d850f1\.pdf - **Source URL:** https://assets\.thermofisher\.com/DirectWebViewer/private/results\.aspx?LANGUAGE=d\_\_EN&PLANT=d\_\_ALF&SKU=ALFAA39581&SUBFORMAT=d\_\_CGV4&page=NewSearch - **Description:** Collected by RESDS\. Original publisher PDF retained\. Original manufacturer safety data sheet for Tris\(2,2,6,6\-tetramethyl\-3,5\-heptanedionato\)ytterbium \(III\)\. Product number: ALFAA39581\. Original revision: 22\-Jul\-2026\. Published under the file\-level authorization confirmed by the user for the frozen 1,125\-file manifest\. ## Page 1 ```text Page 1 / 8 SAFETY DATA SHEET Creation Date 03-Jun-2016 Revision Date 22-Jul-2026 Version 5 ALFAA39581 Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)ytterbium (III) 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: 三(2,2,6,6-四甲基-3,5-庚二酮酸)镱(III)三(2,2,6,6-四甲基-3,5-庚二酮酸)镱(III)三(2,2,6,6-四甲基-3,5-庚二酮酸)镱(III)三(2,2,6,6-四甲基-3,5-庚二酮酸)镱(III) Product Description: Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)ytterbium (III) Cat No. : 39581 Synonyms Ytterbium(THD)3 CAS No 15492-52-1 Molecular Formula C33 H57 O6 Yb 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 Powder Solid White No information available Emergency Overview Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Hygroscopic. Classification of the substance or mixture Skin Corrosion/Irritation Category 2 Serious Eye Damage/Eye Irritation Category 2 Specific target organ toxicity - (single exposure) Category 3 Label Elements Signal Word Warning ______________________________________________________________________________________________ Page 1 ``` ## Page 2 ```text ALFAA39581 SAFETY DATA SHEET Revision Date 22-Jul-2026Page 2 / 8 Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)ytterbium (III) ______________________________________________________________________________________________ Hazard Statements H315 - Causes skin irritation H319 - Causes serious eye irritation H335 - May cause respiratory irritation Precautionary Statements Prevention P261 - Avoid breathing dust/fume/gas/mist/vapors/spray P264 - Wash face, hands and any exposed skin thoroughly after handling P271 - Use only outdoors or in a well-ventilated area P280 - Wear protective gloves/protective clothing/eye protection/face protection Response P305 + P351 + P338 - IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing P312 - Call a POISON CENTER or doctor if you feel unwell P302 + P352 - IF ON SKIN: Wash with plenty of soap and water P304 + P340 - IF INHALED: Remove person to fresh air and keep comfortable for breathing P362 + P364 - Take off contaminated clothing and wash it before reuse Storage P403 + P233 - Store in a well-ventilated place. Keep container tightly closed Disposal P501 - Dispose of contents/ container to an approved waste disposal plant Physical and Chemical Hazards Hygroscopic. Health Hazards Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. 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. Other Hazards This product does not contain any known or suspected endocrine disruptors. SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS Component CAS No Weight % Ytterbium, tris(2,2,6,6-tetramethyl-3,5-heptanedionato-O,O')-, (OC-6-11)- 15492-52-1 >95 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. Get medical attention if symptoms occur. Most important symptoms and effects None reasonably foreseeable. ______________________________________________________________________________________________ Page 2 ``` ## Page 3 ```text ALFAA39581 SAFETY DATA SHEET Revision Date 22-Jul-2026Page 3 / 8 Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)ytterbium (III) ______________________________________________________________________________________________ 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 Suitable Extinguishing Media Water spray, carbon dioxide (CO2), dry chemical, alcohol-resistant foam. 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. Avoid dust formation. Environmental Precautions Should not be released into the environment. Do not allow material to contaminate ground water system. Do not flush into surface water or sanitary sewer system. Methods for Containment and Clean Up Sweep up and shovel into suitable containers for disposal. 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. Avoid dust formation. Storage Keep in a dry, cool and well-ventilated place. Keep container tightly closed. Air sensitive. Specific Use(s) Use in laboratories SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION Control Parameters Monitoring methods BS EN 14042:2003 Title Identifier: Workplace atmospheres. Guide for the application and use of procedures for the assessment of ______________________________________________________________________________________________ Page 3 ``` ## Page 4 ```text ALFAA39581 SAFETY DATA SHEET Revision Date 22-Jul-2026Page 4 / 8 Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)ytterbium (III) ______________________________________________________________________________________________ exposure to chemical and biological agents. MDHS14/3 General methods for sampling and gravimetric analysis of respirable and inhalable dust 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 Ensure adequate ventilation, especially in confined areas. Ventilation systems. Ensure that eyewash stations and safety showers are close to the workstation location. 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) Goggles (European standard - EN 166) Hand Protection Protective gloves Glove material Breakthrough time Glove thickness EU standard Glove comments Nitrile rubber See manufacturers - EN 374 (minimum requirement) Neoprene recommendations Natural rubber PVC 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 Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions. To protect the wearer, respiratory protective equipment must be the correct fit and be used and maintained properly Large scale/emergency use Use a NIOSH/MSHA or European Standard EN 136 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced Recommended Filter type: Particulates filter conforming to EN 143 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. Recommended half mask:- Particle filtering: EN149:2001 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 No information available. SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES Appearance White Physical State Powder Solid Odor No information available Odor Threshold No data available pH No information available Melting Point/Range 167 - 169 °C / 332.6 - 336.2 °F Softening Point No data available Boiling Point/Range No information available ______________________________________________________________________________________________ Page 4 ``` ## Page 5 ```text ALFAA39581 SAFETY DATA SHEET Revision Date 22-Jul-2026Page 5 / 8 Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)ytterbium (III) ______________________________________________________________________________________________ Flash Point No information available Method - No information available Evaporation Rate Not applicable Solid Flammability (solid,gas) No information available Explosion Limits No data available Vapor Pressure No data available Vapor Density Not applicable Solid Specific Gravity / Density No data available Bulk Density No data available Water Solubility Insoluble Solubility in other solvents No information available Partition Coefficient (n-octanol/water) Autoignition Temperature No data available Decomposition Temperature No data available Viscosity Not applicable Solid Explosive Properties No information available Oxidizing Properties No information available Molecular Formula C33 H57 O6 Yb Molecular Weight 722.84 SECTION 10. STABILITY AND REACTIVITY Stability Hygroscopic. Hazardous Reactions None under normal processing. Hazardous Polymerization No information available. Conditions to Avoid Incompatible products. Exposure to moisture. Materials to avoid Oxidizing agent. Hazardous Decomposition Products Carbon monoxide (CO). Carbon dioxide (CO2). Metal oxides. SECTION 11. TOXICOLOGICAL INFORMATION Product Information No acute toxicity information is available for this product (a) acute toxicity; (b) skin corrosion/irritation; Category 2 (c) serious eye damage/irritation; Category 2 (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; No data available ______________________________________________________________________________________________ Page 5 ``` ## Page 6 ```text ALFAA39581 SAFETY DATA SHEET Revision Date 22-Jul-2026Page 6 / 8 Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)ytterbium (III) ______________________________________________________________________________________________ (h) STOT-single exposure; Category 3 Results / Target organs Respiratory system (i) STOT-repeated exposure; No data available Target Organs No information available. (j) aspiration hazard; Not applicable Solid Other Adverse Effects The toxicological properties have not been fully investigated. Symptoms / effects,both acute and No information available delayed SECTION 12. ECOLOGICAL INFORMATION Ecotoxicity effects May cause long-term adverse effects in the environment. Do not allow material to contaminate ground water system. Persistence and Degradability Product contains heavy metals. Discharge into the environment must be avoided. Special pre-treatment is necessary Persistence Insoluble in 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 Mobility in soil Spillage unlikely to penetrate soil 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 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 ______________________________________________________________________________________________ Page 6 ``` ## Page 7 ```text ALFAA39581 SAFETY DATA SHEET Revision Date 22-Jul-2026Page 7 / 8 Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)ytterbium (III) ______________________________________________________________________________________________ IMDG/IMO Not regulated IATA Not regulated Special Precautions for User No special precautions required SECTION 15. REGULATORY INFORMATION International Inventories X = listed, China (IECSC), Europe (EINECS/ELINCS/NLP), U.S.A. (TSCA), Canada (DSL/NDSL), Philippines (PICCS), Japan (ENCS), Japan (ISHL), Australia (AICS), Korea (KECL). Component The List of IECSC EINECS TSCA DSL PICCS ENCS ISHL AICS KECL Inventory of dangerous Hazardous goods GB Chemicals 12268 - (2015 2012 Edition) Ytterbium, - - - - X - - - - - tris(2,2,6,6-tetramethyl -3,5-heptanedionato-O ,O')-, (OC-6-11)- National Regulations SECTION 16. OTHER INFORMATION Prepared By Health, Safety and Environmental Department Creation Date 03-Jun-2016 Revision Date 22-Jul-2026 Revision Summary Not applicable. Training Advice Chemical hazard awareness training, incorporating labelling, Safety Data Sheets (SDS), Personal Protective Equipment (PPE) and hygiene. Use of personal protective equipment, covering appropriate selection, compatibility, breakthrough thresholds, care, maintenance, fit and standards. First aid for chemical exposure, including the use of eye wash and safety showers. 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 ______________________________________________________________________________________________ Page 7 ``` ## Page 8 ```text ALFAA39581 SAFETY DATA SHEET Revision Date 22-Jul-2026Page 8 / 8 Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)ytterbium (III) ______________________________________________________________________________________________ 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 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 ______________________________________________________________________________________________ Page 8 ```