# Tris\[N,N\-bis\(trimethylsilyl\)amide\]lanthanum\(III\) 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\]lanthanum\(III\) 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\]lanthanum\(III\) - **CAS number:** 35788\-99\-9 - **Product code / grade:** ALFAA44381 - **Document type:** SDS - **Original language:** English - **Region:** United Kingdom - **Revision date:** 31\-Jul\-2026 - **Page count:** 8 - **Original filename:** thermofisher\-ALFAA44381\-Lanthanum\-EN\.pdf - **RESDS page:** https://resds\.com/document/tris\-n\-n\-bis\-trimethylsilyl\-amide\-lanthanum\-iii\-sds\-avocado\-research\-chemicals\-ltd\-part\-of\-thermo\-fisher\-en\-dad0792392 - **Original PDF:** https://resds\.com/pdf/tris\-n\-n\-bis\-trimethylsilyl\-amide\-lanthanum\-iii\-sds\-avocado\-research\-chemicals\-ltd\-part\-of\-thermo\-fisher\-en\-dad0792392\.pdf - **Source URL:** https://assets\.thermofisher\.com/DirectWebViewer/private/results\.aspx?LANGUAGE=d\_\_EN&PLANT=d\_\_ALF&SKU=ALFAA44381&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\]lanthanum\(III\)\. Product number: ALFAA44381\. Original revision: 31\-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 31-Jul-2026 Version 6 ALFAA44381 Tris[N,N-bis(trimethylsilyl)amide]lanthanum(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]镧(III)三[N,N-双(三甲基硅烷)胺]镧(III)三[N,N-双(三甲基硅烷)胺]镧(III)三[N,N-双(三甲基硅烷)胺]镧(III) Product Description: Tris[N,N-bis(trimethylsilyl)amide]lanthanum(III) Cat No. : 44381 CAS No 35788-99-9 Molecular Formula C18 H54 LaN3 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 Solid No information available Odorless Emergency Overview Flammable solid. In contact with water releases flammable gas. Causes severe skin burns and eye damage. Reacts violently with water. Moisture 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 B Serious Eye Damage/Eye Irritation Category 1 Label Elements ______________________________________________________________________________________________ Page 1 ``` ## Page 2 ```text ALFAA44381 SAFETY DATA SHEET Revision Date 31-Jul-2026Page 2 / 8 Tris[N,N-bis(trimethylsilyl)amide]lanthanum(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 P210 - Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking P231 + P232 - Handle and store contents under inert gas. Protect from moisture P240 - Ground and bond container and receiving equipment 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 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 P310 - Immediately call a POISON CENTER or doctor P370 + P378 - In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish P302 + P335 + P334 - IF ON SKIN: Brush off loose particles from skin. Immerse in cool water P362 + P364 - Take off contaminated clothing and wash it before reuse Storage P402 + P404 - Store in a dry place. Store in a closed container 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. 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]lanthanum(III) 35788-99-9 <=100 SECTION 4. FIRST AID MEASURES General Advice Show this safety data sheet to the doctor in attendance. Immediate medical attention is required. Eye Contact Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Immediate medical attention is required. Keep eye wide open while rinsing. Skin Contact Wash off immediately with soap and plenty of water while removing all contaminated clothes and shoes. Call a physician immediately. Inhalation Remove to fresh air. If not breathing, give artificial respiration. Call a physician or poison control center immediately. Do not use ______________________________________________________________________________________________ Page 2 ``` ## Page 3 ```text ALFAA44381 SAFETY DATA SHEET Revision Date 31-Jul-2026Page 3 / 8 Tris[N,N-bis(trimethylsilyl)amide]lanthanum(III) ______________________________________________________________________________________________ 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. Ingestion Immediate medical attention is required. Do NOT induce vomiting. Drink plenty of water. Never give anything by mouth to an unconscious person. 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 Dry sand. Carbon dioxide (CO 2). Powder. Do not use water or foam. CO 2, dry chemical, dry sand, alcohol-resistant foam. Extinguishing media which must not be used for safety reasons Water. Specific Hazards Arising from the Chemical The product causes burns of eyes, skin and mucous membranes. Reacts violently with water. 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. Thermal decomposition can lead to release of irritating gases and vapors. SECTION 6. ACCIDENTAL RELEASE MEASURES Personal Precautions Use personal protective equipment as required. Evacuate personnel to safe areas. Avoid contact with skin, eyes or clothing. Environmental Precautions Should not be released into the environment. Do not allow material to contaminate ground water system. See Section 12 for additional Ecological Information. 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. Avoid dust formation. Do not expose spill to water. Refer to protective measures listed in Sections 8 and 13. SECTION 7. HANDLING AND STORAGE Handling Wear personal protective equipment/face protection. Do not get in eyes, on skin, or on clothing. Use only under a chemical fume hood. Do not breathe dust. Do not ingest. If swallowed then seek immediate medical assistance. Do not allow contact with water. Storage Corrosives area. Keep away from water or moist air. Keep containers tightly closed in a dry, cool and well-ventilated place. ______________________________________________________________________________________________ Page 3 ``` ## Page 4 ```text ALFAA44381 SAFETY DATA SHEET Revision Date 31-Jul-2026Page 4 / 8 Tris[N,N-bis(trimethylsilyl)amide]lanthanum(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 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 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 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 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 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 ______________________________________________________________________________________________ Page 4 ``` ## Page 5 ```text ALFAA44381 SAFETY DATA SHEET Revision Date 31-Jul-2026Page 5 / 8 Tris[N,N-bis(trimethylsilyl)amide]lanthanum(III) ______________________________________________________________________________________________ Appearance Physical State Solid Odor Odorless Odor Threshold No data available pH No information available Melting Point/Range 149 - 152 °C / 300.2 - 305.6 °F Softening Point No data available Boiling Point/Range No information available Flash Point 2 °C / 35.6 °F 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 No information available 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 LaN3 Si6 Molecular Weight 620.06 SECTION 10. STABILITY AND REACTIVITY Stability Moisture sensitive. Hazardous Reactions None under normal processing. Reacts violently with water. Hazardous Polymerization No information available. Conditions to Avoid Exposure to moist air or water. Exposure to moisture. Materials to avoid No information available. Hazardous Decomposition Products Trimethylsilane. Lanthanum oxide. Carbon monoxide (CO). Carbon dioxide (CO2). Nitrogen oxides (NOx). Silicon dioxide. SECTION 11. TOXICOLOGICAL INFORMATION Product Information (a) acute toxicity; (b) skin corrosion/irritation; Category 1 B (c) serious eye damage/irritation; Category 1 (d) respiratory or skin sensitization; ______________________________________________________________________________________________ Page 5 ``` ## Page 6 ```text ALFAA44381 SAFETY DATA SHEET Revision Date 31-Jul-2026Page 6 / 8 Tris[N,N-bis(trimethylsilyl)amide]lanthanum(III) ______________________________________________________________________________________________ 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 (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 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 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 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 Product has a high potential to bioconcentrate Mobility in soil No information available 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. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep product and empty container away from heat and sources of ignition. ______________________________________________________________________________________________ Page 6 ``` ## Page 7 ```text ALFAA44381 SAFETY DATA SHEET Revision Date 31-Jul-2026Page 7 / 8 Tris[N,N-bis(trimethylsilyl)amide]lanthanum(III) ______________________________________________________________________________________________ Other Information Waste codes should be assigned by the user based on the application for which the product was used. Do not flush to sewer. Can be landfilled or incinerated, when in compliance with local regulations. Do not empty into drains. Large amounts will affect pH and harm aquatic organisms. SECTION 14. TRANSPORT INFORMATION 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]lanthanum(III)) Hazard Class 4.3 Subsidiary Hazard Class 4.1 Packing Group II IMDG/IMO UN-No UN3396 Proper Shipping Name ORGANOMETALLIC SUBSTANCE, SOLID, WATER-REACTIVE, FLAMMABLE Technical Shipping Name (Tris[N,N-bis(trimethylsilyl)amide]lanthanum(III)) Hazard Class 4.3 Subsidiary Hazard Class 4.1 Packing Group II IATA UN-No UN3396 Proper Shipping Name ORGANOMETALLIC SUBSTANCE, SOLID, WATER-REACTIVE, FLAMMABLE Technical Shipping Name (Tris[N,N-bis(trimethylsilyl)amide]lanthanum(III)) Hazard Class 4.3 Subsidiary Hazard Class 4.1 Packing Group II 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 B1A222252545 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 ______________________________________________________________________________________________ Page 7 ``` ## Page 8 ```text ALFAA44381 SAFETY DATA SHEET Revision Date 31-Jul-2026Page 8 / 8 Tris[N,N-bis(trimethylsilyl)amide]lanthanum(III) ______________________________________________________________________________________________ Revision Date 31-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 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 ```