# Tris\[N,N\-bis\(trimethylsilyl\)amide\]erbium\(III\) 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\[N,N\-bis\(trimethylsilyl\)amide\]erbium\(III\) SDS – Avocado Research Chemicals Ltd\. \(Part of Thermo Fisher Scientific\) - **Publisher:** Avocado Research Chemicals Ltd\. \(Part of Thermo Fisher Scientific\) - **Material:** Tris\[N,N\-bis\(trimethylsilyl\)amide\]erbium\(III\) - **CAS number:** 103457\-72\-3 - **Product code / grade:** ALFAA44421 - **Document type:** SDS - **Original language:** English - **Region:** United Kingdom - **Revision date:** 22\-Jul\-2026 - **Page count:** 8 - **Original filename:** thermofisher\-ALFAA44421\-Erbium\-EN\.pdf - **RESDS page:** https://resds\.com/document/tris\-n\-n\-bis\-trimethylsilyl\-amide\-erbium\-iii\-sds\-avocado\-research\-chemicals\-ltd\-part\-of\-thermo\-fisher\-en\-9972ce612d - **Original PDF:** https://resds\.com/pdf/tris\-n\-n\-bis\-trimethylsilyl\-amide\-erbium\-iii\-sds\-avocado\-research\-chemicals\-ltd\-part\-of\-thermo\-fisher\-en\-9972ce612d\.pdf - **Source URL:** https://assets\.thermofisher\.com/DirectWebViewer/private/results\.aspx?LANGUAGE=d\_\_EN&PLANT=d\_\_ALF&SKU=ALFAA44421&SUBFORMAT=d\_\_CGV4&page=NewSearch - **Description:** Collected by RESDS\. Original publisher PDF retained\. Original manufacturer safety data sheet for Tris\[N,N\-bis\(trimethylsilyl\)amide\]erbium\(III\)\. Product number: ALFAA44421\. 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 Revision Date 22-Jul-2026 Version 6 ALFAA44421 Tris[N,N-bis(trimethylsilyl)amide]erbium(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[N,N-双(三甲基硅烷)胺]铒(III)三[N,N-双(三甲基硅烷)胺]铒(III)三[N,N-双(三甲基硅烷)胺]铒(III)三[N,N-双(三甲基硅烷)胺]铒(III) Product Description: Tris[N,N-bis(trimethylsilyl)amide]erbium(III) Cat No. : 44421 Synonyms N,N-Bis(trimethylsilylamine)erbium(III); Hexamethyldisilazane erbium(III) salt CAS No 103457-72-3 Molecular Formula C18 H54 Er N3 Si6 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 No information available No information available Emergency Overview Flammable solid. In contact with water releases flammable gas. Causes severe skin burns and eye damage. Reacts violently with water. Moisture sensitive. Air sensitive. Classification of the substance or mixture Flammable solids. Category 2 Substances/mixtures which, in contact with water, emit flammable gases Category 2 Skin Corrosion/Irritation Category 1 C Serious Eye Damage/Eye Irritation Category 1 Label Elements ______________________________________________________________________________________________ Page 1 ``` ## Page 2 ```text ALFAA44421 SAFETY DATA SHEET Revision Date 22-Jul-2026Page 2 / 8 Tris[N,N-bis(trimethylsilyl)amide]erbium(III) ______________________________________________________________________________________________ Signal Word Danger Hazard Statements H228 - Flammable solid H261 - In contact with water releases flammable gases H314 - Causes severe skin burns and eye damage Precautionary Statements Prevention P231 + P232 - Handle and store contents under inert gas. Protect from moisture P240 - Ground and bond container and receiving equipment P210 - Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking P264 - Wash face, hands and any exposed skin thoroughly after handling P280 - Wear protective gloves/protective clothing/eye protection/face protection Response P310 - Immediately call a POISON CENTER or doctor P301 + P330 + P331 - IF SWALLOWED: rinse mouth. Do NOT induce vomiting P303 + P361 + P353 - IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower P304 + P340 - IF INHALED: Remove person to fresh air and keep comfortable for breathing P305 + P351 + P338 - IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing P370 + P378 - In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish P362 + P364 - Take off contaminated clothing and wash it before reuse Storage P403 - Store in a well-ventilated place Disposal P501 - Dispose of contents/ container to an approved waste disposal plant Physical and Chemical Hazards Combustible material. In contact with water releases flammable gas. Reacts violently with water. Health Hazards Corrosive. Causes skin and eye burns. Environmental hazards Contains no substances known to be hazardous to the environment or not degradable in waste water treatment plants. Reacts violently with water. Is not likely mobile in the environment due its low water solubility. Spillage unlikely to penetrate soil. This product does not contain any known or suspected endocrine disruptors. SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS Component CAS No Weight % Tris[N,N-bis(trimethylsilyl)amide]erbium(III) 103457-72-3 >95 SECTION 4. FIRST AID MEASURES Eye Contact Immediate medical attention is required. Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Skin Contact Immediate medical attention is required. Wash off immediately with plenty of water for at least 15 minutes. Inhalation Remove to fresh air. Immediate medical attention is required. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. If not breathing, give artificial respiration. Ingestion Do NOT induce vomiting. Call a physician or poison control center immediately. ______________________________________________________________________________________________ Page 2 ``` ## Page 3 ```text ALFAA44421 SAFETY DATA SHEET Revision Date 22-Jul-2026Page 3 / 8 Tris[N,N-bis(trimethylsilyl)amide]erbium(III) ______________________________________________________________________________________________ Most important symptoms and effects Causes burns by all exposure routes. Product is a corrosive material. Use of gastric lavage or emesis is contraindicated. Possible perforation of stomach or esophagus should be investigated: Ingestion causes severe swelling, severe damage to the delicate tissue and danger of perforation 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 Carbon dioxide (CO 2). Dry chemical. Chemical foam. Extinguishing media which must not be used for safety reasons Water. Specific Hazards Arising from the Chemical Flammable. Thermal decomposition can lead to release of irritating gases and vapors. Keep product and empty container away from heat and sources of ignition. 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 Do not get in eyes, on skin, or on clothing. Use personal protective equipment as required. Ensure adequate ventilation. ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). Take precautionary measures against static discharges. All equipment used when handling the product must be grounded. Do not breathe dust/fume/gas/mist/vapors/spray. Avoid dust formation. Environmental Precautions Should not be released into the environment. Methods for Containment and Clean Up Do not expose spill to water. Remove all sources of ignition. Use spark-proof tools and explosion-proof equipment. Sweep up and shovel into suitable containers for disposal. Refer to protective measures listed in Sections 8 and 13. SECTION 7. HANDLING AND STORAGE Handling Do not breathe dust. Do not get in eyes, on skin, or on clothing. Do not ingest. If swallowed then seek immediate medical assistance. Handle product only in closed system or provide appropriate exhaust ventilation. Use spark-proof tools and explosion-proof equipment. Use only non-sparking tools. Do not allow contact with water because of violent reaction. Storage Keep in a dry, cool and well-ventilated place. Keep container tightly closed. Keep away from heat, sparks and flame. Air sensitive. Keep from any possible contact with water. Corrosives area. Flammables area. Store under an inert atmosphere. Keep containers tightly closed in a dry, cool and well-ventilated place. ______________________________________________________________________________________________ Page 3 ``` ## Page 4 ```text ALFAA44421 SAFETY DATA SHEET Revision Date 22-Jul-2026Page 4 / 8 Tris[N,N-bis(trimethylsilyl)amide]erbium(III) ______________________________________________________________________________________________ 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 exposure to chemical and biological agents. MDHS14/3 General methods for sampling and gravimetric analysis of respirable and inhalable dust Exposure Controls Engineering Measures Ensure adequate ventilation, especially in confined areas. Ensure that eyewash stations and safety showers are close to the workstation location. Use explosion-proof electrical/ventilating/lighting equipment. 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 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 Wear appropriate protective gloves and clothing to prevent skin exposure Respiratory Protection No protective equipment is needed under normal use conditions. 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 Small scale/Laboratory use Maintain adequate ventilation 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 No information available Physical State Powder Solid Odor No information available ______________________________________________________________________________________________ Page 4 ``` ## Page 5 ```text ALFAA44421 SAFETY DATA SHEET Revision Date 22-Jul-2026Page 5 / 8 Tris[N,N-bis(trimethylsilyl)amide]erbium(III) ______________________________________________________________________________________________ Odor Threshold No data available pH No information available Melting Point/Range 180 - 184 °C / 356 - 363.2 °F Softening Point No data available Boiling Point/Range No information available 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 C18 H54 Er N3 Si6 Molecular Weight 648.42 SECTION 10. STABILITY AND REACTIVITY Stability Moisture sensitive. Air sensitive. Hazardous Reactions No information available. Hazardous Polymerization Hazardous polymerization does not occur. Conditions to Avoid Keep away from open flames, hot surfaces and sources of ignition. Exposure to air. Incompatible products. Exposure to moist air or water. Materials to avoid Strong oxidizing agents. Hazardous Decomposition Products Trimethylsilane. Erbium oxide. Nitrogen oxides (NOx). Carbon monoxide (CO). Carbon dioxide (CO2). SECTION 11. TOXICOLOGICAL INFORMATION Product Information No acute toxicity information is available for this product (a) acute toxicity; (b) skin corrosion/irritation; Category 1 B (c) serious eye damage/irritation; Category 1 (d) respiratory or skin sensitization; Respiratory No data available Skin No data available (e) germ cell mutagenicity; No data available ______________________________________________________________________________________________ Page 5 ``` ## Page 6 ```text ALFAA44421 SAFETY DATA SHEET Revision Date 22-Jul-2026Page 6 / 8 Tris[N,N-bis(trimethylsilyl)amide]erbium(III) ______________________________________________________________________________________________ (f) carcinogenicity; No data available There are no known carcinogenic chemicals in this product (g) reproductive toxicity; No data available (h) STOT-single exposure; No data available (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 Product is a corrosive material. Use of gastric lavage or emesis is contraindicated. delayed Possible perforation of stomach or esophagus should be investigated: Ingestion causes severe swelling, severe damage to the delicate tissue and danger of perforation SECTION 12. ECOLOGICAL INFORMATION Ecotoxicity effects Do not empty into drains. Persistence and Degradability Persistence Insoluble in water. Bioaccumulative Potential May have some potential to bioaccumulate 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. Do not flush to sewer. Large amounts will affect pH and harm aquatic organisms. SECTION 14. TRANSPORT INFORMATION ______________________________________________________________________________________________ Page 6 ``` ## Page 7 ```text ALFAA44421 SAFETY DATA SHEET Revision Date 22-Jul-2026Page 7 / 8 Tris[N,N-bis(trimethylsilyl)amide]erbium(III) ______________________________________________________________________________________________ Road and Rail Transport UN-No UN3396 Proper Shipping Name ORGANOMETALLIC SUBSTANCE, SOLID, WATER-REACTIVE, FLAMMABLE Technical Shipping Name Tris (N,N-bis (trimethylsilyl) amide) erbium (III) Hazard Class 4.3 Subsidiary Hazard Class 4.1 Packing Group I IMDG/IMO UN-No UN3396 Proper Shipping Name ORGANOMETALLIC SUBSTANCE, SOLID, WATER-REACTIVE, FLAMMABLE Technical Shipping Name Tris (N,N-bis (trimethylsilyl) amide) erbium (III) Hazard Class 4.3 Subsidiary Hazard Class 4.1 Packing Group I IATA UN-No UN3396 Proper Shipping Name ORGANOMETALLIC SUBSTANCE, SOLID, WATER-REACTIVE, FLAMMABLE* Technical Shipping Name Tris (N,N-bis (trimethylsilyl) amide) erbium (III) Hazard Class 4.3 Subsidiary Hazard Class 4.1 Packing Group I Special Precautions for User No special precautions required SECTION 15. REGULATORY INFORMATION Measures on the Environmental Administration of New Chemical Substances Registration Registration/Notification number B1A222254554 Downstream users need to comply with the conditions of safe use of the chemical, understand the environmental and health hazard and risk management measures identified on the SDS as well as the local/national regulations concerning the chemical. 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). National Regulations SECTION 16. OTHER INFORMATION Prepared By Health, Safety and Environmental Department 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 ______________________________________________________________________________________________ Page 7 ``` ## Page 8 ```text ALFAA44421 SAFETY DATA SHEET Revision Date 22-Jul-2026Page 8 / 8 Tris[N,N-bis(trimethylsilyl)amide]erbium(III) ______________________________________________________________________________________________ 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 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 ```