Gadolinium Chloride Hexahydrate, 99.9% — Safety Data Sheet — FUJIFILM Wako Pure Chemical Corporation PAGE 1 SAFETY DATA SHEET According to JIS Z 7253:2019 Issue Date 05-Mar-2026 Revision Number 2.03 Section 1: PRODUCT AND COMPANY IDENTIFICATION Product Name Gadolinium Chloride Hexahydrate, 99.9% Product Code 074-02663,078-02661 Supplier FUJIFILM Wako Pure Chemical Corporation 1-2 Doshomachi 3-Chome, Chuo-ku, Osaka 540-8605, Japan Phone: +81-6-6203-3741 Fax: +81-6-6203-2029 Emergency telephone number +81-6-6203-3741 / +81-3-3270-8571 Recommended uses For research use only Restrictions on use Seek expert judgment when using for purposes other than those recommended. Section 2: HAZARDS IDENTIFICATION GHS classification Classification of the substance or mixture Skin corrosion/irritation Category 2 Serious eye damage/eye irritation Category 2A Pictograms Signal word Warning Hazard statements H315 - Causes skin irritation H319 - 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 Precautionary statements-(Response) • 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 • 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 Precautionary statements-(Storage) • Not applicable Precautionary statements-(Disposal) • Not applicable Others Other hazards Not available Page 1 / 6 W01W0107-0266 JGHEEN Gadolinium Chloride Hexahydrate, 99.9% PAGE 2 Issue Date 05-Mar-2026 Section 3: COMPOSITION/INFORMATION ON INGREDIENTS Single Substance or Mixture Substance Formula GdCl3·6H2O Chemical Name Weight-% Molecular weight ENCS ISHL No. CAS RN Gadolinium Chloride 99.9 371.70 N/A N/A 13450-84-5 Hexahydrate (subtracting method) Note on ISHL No.: * in the table means announced chemical substances. Section 4: FIRST AID MEASURES Inhalation Remove to fresh air. If symptoms persist, call a physician. Skin contact Wash off immediately with soap and plenty of water. If symptoms persist, call a physician. Eye contact IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediate medical attention is required. Ingestion Rinse mouth. Never give anything by mouth to an unconscious person. Call a physician or poison control center immediately. Do not induce vomiting without medical advice. Protection of first-aiders Use personal protective equipment as required. Section 5: FIRE FIGHTING MEASURES Suitable extinguishing media Use extinguishing measures that are appropriate to local circumstances and the surrounding environment Unsuitable extinguishing media No information available Specific hazards arising from the chemical product Thermal decomposition can lead to release of irritating and toxic gases and vapors. Special extinguishing method No information available Special protective actions for fire-fighters Use personal protective equipment as required. Firefighters should wear self-contained breathing apparatus and full firefighting turnout gear. Section 6: ACCIDENTAL RELEASE MEASURES Personal precautions, protective equipment and emergency procedures For indoor, provide adequate ventilation process until the end of working. Deny unnecessary entry other than the people involved by, for example, using a rope. While working, wear appropriate protective equipments to avoid adhering it on skin, or inhaling the gas. Work from windward, and retract the people downwind. Environmental precautions To be careful not discharged to the environment without being properly handled waste water contaminated. Methods and materials for contaminent and methods and materials for cleaning up Sweep up and gather scattered particles, and collect it in an empty airtight container. Recoverly, neutralization No information available Secondary disaster prevention measures Page 2 / 6 W01W0107-0266 JGHEEN Gadolinium Chloride Hexahydrate, 99.9% PAGE 3 Issue Date 05-Mar-2026 Clean contaminated objects and areas thoroughly observing environmental regulations. Section 7: HANDLING AND STORAGE Handling Technical measures Avoid contact with strong oxidizing agents. Avoids contact with acids. Use with local exhaust ventilation. Precautions Do not rough handling containers, such as upsetting, falling, giving a shock, and dragging. Prevent leakage, overflow, and scattering. Not to generate steam and dust in vain. Seal the container after use. After handling, wash hands and face, and then gargle. In places other than those specified, should not be smoking or eating and drinking. Should not be brought contaminated protective equipment and gloves to rest stops. Deny unnecessary entry of non-emergency personnel to the handling area. Safety handling precautions Use personal protective equipment as required. Avoid contact with skin, eyes or clothing. Storage Safe storage conditions Storage conditions Store away from sunlight in well-ventilated place at room temperature (preferably cool). Keep container tightly closed. Safe packaging material Glass Incompatible substances Strong oxidizing agents, Acids Section 8: EXPOSURE CONTROLS/PERSONAL PROTECTION Engineering controls In case of indoor workplace, seal the source or use a local exhaust system. Provide the safety shower facility, and hand- and eye-wash facility. And display their position clearly. Exposure limits This product, as supplied, does not contain any hazardous materials with occupational exposure limits established by the region specific regulatory bodies. Personal protective equipment Respiratory protection Dust mask ( JIS T 8151 ) Hand protection chemical protective gloves ( JIS T 8116 ) Eye protection protective eyeglasses or chemical safety goggles (JIS T 8147) Skin and body　protection Long-sleeved work clothes General hygiene considerations Handle in accordance with good industrial hygiene and safety practice. If this product is classified as ”Chemical Substances Hazardous to Skin, etc.”, use appropriate protective equipment to them. Section 9: PHYSICAL AND CHEMICAL PROPERTIES Form Color white Appearance crystals Odor no data available Melting point/freezing point 609 °C Boiling point, initial boiling point and boiling range no data available Flammability no data available Evaporation rate: no data available Flammability (solid, gas): no data available Upper/lower flammability or explosive limits Upper： no data available Lower： no data available Flash point no data available Page 3 / 6 W01W0107-0266 JGHEEN Gadolinium Chloride Hexahydrate, 99.9% PAGE 4 Issue Date 05-Mar-2026 Auto-ignition temperature: no data available Decomposition temperature: no data available pH no data available Viscosity (coefficient of viscosity) no data available Dynamic viscosity no data available Solubilities water and Ethanol : soluble . n-Octanol/water partition coefficient:(log Pow) no data available Vapour pressure no data available Specific Gravity / Relative density 2.424 Vapour density no data available Particle characteristics no data available Section 10: STABILITY AND REACTIVITY Stability Reactivity no data available Chemical stability Stable under recommended storage conditions. Hazardous reactions None under normal processing Conditions to avoid Extremes of temperature and direct sunlight, Moisture Incompatible materials Strong oxidizing agents, Acids Hazardous decomposition products Metal oxides, Halides Section 11: TOXICOLOGICAL INFORMATION *NITE: National Institute of Technology and Evaluation (JAPAN) https://www.chem-info.nite.go.jp/en/chem/chrip/chrip_search/srhInput Acute toxicity no data available Skin irritation/corrosion no data available Serious eye damage/ irritation no data available Respiratory or skin sensitization no data available Reproductive cell mutagenicity no data available Carcinogenicity no data available Reproductive toxicity no data available STOT-single exposure no data available STOT-repeated exposure no data available Aspiration hazard no data available Section 12: ECOLOGICAL INFORMATION *NITE: National Institute of Technology and Evaluation (JAPAN) https://www.chem-info.nite.go.jp/en/chem/chrip/chrip_search/srhInput Ecotoxicity no data available Other data no data available Persistence and degradability No information available Bioaccumulative potential No information available Mobility in soil No information available Hazard to the ozone layer No information available Page 4 / 6 W01W0107-0266 JGHEEN Gadolinium Chloride Hexahydrate, 99.9% PAGE 5 Issue Date 05-Mar-2026 Section 13: DISPOSAL CONSIDERATIONS Waste from residues Disposal should be in accordance with applicable regional, national and local laws and regulations. Contaminated container and contaminated packaging Disposal should be in accordance with applicable regional, national and local laws and regulations. Section 14: TRANSPORT INFORMATION ADR/RID Not regulated UN number - Proper shipping name: UN classfication Subsidiary hazard class Packing group Marine pollutant Not applicable IMDG Not regulated UN number - Proper shipping name: UN classfication Subsidiary hazard class Packing group Marine pollutant (Sea) Not applicable Transport in bulk according to No information available Annex II of MARPOL 73/78 and the IBC Code IATA Not regulated UN number - Proper shipping name: UN classfication Subsidiary hazard class Packing group Environmentally Hazardous Not applicable Substance Section 15: REGULATORY INFORMATION Japanese regulations Fire Service Act Not applicable Poisonous and Deleterious Not applicable Substances Control Law Industrial Safety and Health Act Not applicable Regulations for the carriage Not applicable and storage of dangerous goods in ship Civil Aeronautics Law Not applicable Pollutant Release and Transfer Not applicable Register Law (2023.4.1-) Section 16: OTHER INFORMATION Key literature references and NITE: National Institute of Technology and Evaluation (JAPAN) sources for data etc. https://www.chem-info.nite.go.jp/en/chem/chrip/chrip_search/srhInput IATA dangerous Goods Regulations Page 5 / 6 W01W0107-0266 JGHEEN Gadolinium Chloride Hexahydrate, 99.9% PAGE 6 Issue Date 05-Mar-2026 RTECS:Registry of Toxic Effects of Chemical Substances Japan Industrial Safety and Health Association GHS Model SDS Dictionary of Synthetic Oraganic Chemistry , SSOCJ, Koudansha Scientific Co.Ltd. Chemical Dictionary, Kyouritsu Publishing Co., Ltd. etc Record of SDS revisions The following contents were revised. Prodauct and company Identification. Handling and storage. Exposure controls/personal protection. Stability and reactivity. Ecological information. Regulatory information. Disclaimer This SDS is according to JIS Z 7253: 2019. 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, 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. GHS Classification is according to JIS Z 7252:2019. *JIS: Japanese Industrial Standards End of Safety Data Sheet Page 6 / 6 W01W0107-0266 JGHEEN Gadolinium Chloride Hexahydrate, 99.9%