# Samarium Cobalt Permanent Magnet – Safety Data Sheet Text extracted from the original PDF. Tables, images, symbols and OCR may differ. Check the original PDF for safety information. - **Document title:** Samarium Cobalt Permanent Magnet – Safety Data Sheet - **Publisher:** Allstar Magnetics - **Material:** Samarium Cobalt permanent magnet - **CAS number:** 7440\-19\-9, 7440\-48\-4 - **Product code / grade:** Rev 1\.0 - **Document type:** SDS - **Original language:** English - **Region:** United States - **Revision date:** 2024\-02\-09 - **Page count:** 6 - **Original filename:** allstar\-samarium\-cobalt\.pdf - **RESDS page:** https://resds\.com/document/samarium\-cobalt\-permanent\-magnet\-en\-9d7a1f8574 - **Original PDF:** https://resds\.com/pdf/samarium\-cobalt\-permanent\-magnet\-en\-9d7a1f8574\.pdf - **Source URL:** https://allstarmagnetics\.com/wp\-content/uploads/2024/10/Samarium\-cobalt\-SDS\.pdf - **Description:** Collected by RESDS\. Original publisher PDF retained\. Original Allstar Magnetics SDS for samarium cobalt permanent magnets\. Section 3 identifies samarium and cobalt, CAS 7440\-19\-9 and 7440\-48\-4\. Revision 9 February 2024, Rev 1\.0\. Publication authorization confirmed by the RESDS site owner on 14 September 2026\. ## Page 1 ```text SAFETY DATA SHEET Samarium Cobalt Section 1: Identification 1.1. Product Identifier Product Form: Mixture Product Name: Samarium Cobalt 1.2. Intended Use of Product: Samarium Cobalt permanent magnet 1.3. Name, Address, and Telephone of the Responsible Party: Allstar Magnetics 15100 NE 65th Street, Suite 170 Vancouver, WA 98682 1-800-949-8950 https://allstarmagnetics.com 1.4 Emergency Telephone Number: Within USA and Canada 1-800-424-9300 or +1 703-527-3887 (collect calls accepted) Section 2: Hazard(s) Identification 2.1. Classification of the Substance or Mixture Classification (GHS-US) Not Applicable. Semi-finished and finished products constitute manufactured articles under the terms of the REACH Regulation (EC) No 1907/2006. For articles, there is no obligation to classify according to CLP-Regulation. 2.2. Label Elements GHS-US Labeling No labeling applicable 2.3. Other Hazards Not Applicable. Semi-finished and finished products constitute manufactured articles under the terms of the REACH Regulation (EC) No 1907/2006. For articles, there is no obligation to classify according to CLP-Regulation 2.4. Unknown Acute Toxicity (GHS-US) No data available Section 3: Composition/ Information on Ingredients 3.1. Substance Not applicable 3.2. Mixture: The classifications below reflect the classification of each pure substance respectively and are intended for information only Name Product Identifier % Classification (GHS-US) Samarium (CAS No) 7440-19-9 ~35% (powder) [Sm] EINICS: 231-128-7 Xi R36/38, F R11 R53 Flam. H228; H315 ; H319 ; H413 Cobalt (CAS No) 7440-48-4 ~65% Xi R42/43, EINICS: 231-158-0 Index R53 Resp. Sens. 1, H334 Skin Sens. 1, H317 ; number: 027-001-00-9 H413 Additional Information (listed rare Classification as per CLP notification. Listed classifications refer exclusively to powder form. earths) Specified rare earth are classified as NON-hazardous in solid form. Section 4: First-Aid Measures 4.1. Description of First Aid Measures First-aid Measures General: If medical advice is needed, have product SDS at hand. First-aid Measures After Inhalation: If inhaled, move to fresh air and keep at rest in a position comfortable for breathing. Obtain medical attention if breathing difficulty persists. First-aid Measures After Skin Contact: Brush off powders and wash immediately with plenty of soap and water. Rinse with plenty of water. Remove contaminated clothing. Wash contaminated clothing before reuse. Obtain medical attention if irritation develops or persists. Foreign bodies which have penetrated the skin must be removed and the wound cleaned thoroughly. SDS SMC, Rev 1.0, 09Feb2024 Page 1 of 6 ``` ## Page 2 ```text First-aid Measures After Eye Contact: Immediately rinse with water for a prolonged period (at least 15 minutes) while holding the eyelids wide open. Remove contact lenses, if present and easy to do. Continue rinsing. Obtain medical attention if irritation develops or persists. First-aid Measures After Ingestion: If swallowed, do not induce vomiting: seek medical advice immediately and show this SDS. 4.2. Most important symptoms and effects, both acute and delayed 4.3. Most important symptoms and effect, both acute and delayed. No further relevant information or indication of any immediate medical attention and special treatment available 4.4. Indication of Any Immediate Medical Attention and Special Treatment Needed If medical advice is needed, have product SDS at hand. Section 5: Fire-Fighting Measures 5.1. Extinguishing Media Suitable Extinguishing Media: Extinguishing agents must be adapted to the environment. Noncombustible, dry chemicals without oxygen compounds or sand should be used. 5.2. Special Hazards Arising From the Substance or Mixture No further relevant information available. Explosion Hazard: Product itself is not explosive but if dust is generated, dust clouds suspended in air can be explosive. Reactivity: Hazardous reactions will not occur under normal conditions. 5.3. Advice for Firefighters Firefighting Instructions (Protective Equipment): No special measure required. Section 6: Accidental Release Measures 6.1. Personal Precautions, Protective Equipment and Emergency Procedures: No special measures required. 6.2. Environmental Precautions: No special measures required. 6.3. Methods and Material for Containment and Cleaning Up: No special measures required. 6.4. Reference to Other Sections See heading 7 for Safe Handling Section See heading 8 Exposure Controls and Personal Protection. See heading 13 for Disposal Information Section 7: Handling and Storage 7.1. Precautions for Safe Handling: No protective measures are required in the provided form. Additional Hazards When Processed: 7.1.1. Dry Mechanical Processing: This processing of rare earth permanent magnet alloys is permitted only under special safety precautions because dusts which are capable of self-heating or pyrophoric dusts with a tendency to explode may be produced. 7.1.2. Wet Mechanical Processing: Watery processing medium can react with the magnet grinding and may form hydrogen already at room temperature. Attention – Formation of ex-atmospheres possible! Part of the resulting hydrogen is stored in the material. The resulting processing sludges must be kept under a protective liquid because dried out sludge are capable of self-heating or may react. In this case, stored hydrogen volume burns off with flames. Also, see Section 8. Conditions for Safe Storage, Including Any Incompatibilities: Please keep magnetized magnets away from computers, displays and magnetic storage devices, like floppy discs, magnetic tapes or credit cards as it can destroy or alter the magnetic data. People with heart pacemakers must keep away from magnetic fields. Storeroom and Receptacle Requirements: Store in dry location free of corrosive atmosphere. Keep away from magnetic objects such as iron, cobalt or nickel and high energy magnetic fields. Section 8: Exposure Controls/Personal Protection Additional Information about Design of Technical Systems: Provide filtered ventilation of working area for all processing steps. Suitable breathing apparatus must be used (see personal safety equipment) for repair and maintenance work on air handling systems, especially during filter changes. 8.1. Control Parameters: Components with limit values that require monitoring at the workplace Cobalt (Co) 7440-48-4 EL (Canada) 0.2 mg/m³; IARC 2B EV (Canada) 0.1 mg/m³ PEL (OSHA USA) 0.1 mg/m³ as Co; *for metal dust and fume, as Co REL (USA) 0.05 mg/m³ SDS SMC, Rev 1.0, 09Feb2024 Page 2 of 6 ``` ## Page 3 ```text inorg. cmpds.: *metal dust and fume, as Co TLV (USA) 0.02 mg/m³ as Co; BEI Ingredients with biological limit values Cobalt (Co) 7440-48-4 BEI USA 15 µg/L Medium: urine Time: end of shift at end of workweek Parameter: Cobalt (background, semi-quantitative) Additional Information: The lists that were valid during the creation were used as basis. 8.2. Exposure Controls Appropriate Engineering Controls: Ensure adequate ventilation, especially in confined areas. Avoid dust production. Personal Protective Equipment: Not generally required. The use of personal protective equipment may be necessary as conditions warrant. Use good personal hygiene practices. Keep magnetized parts away from mechanical/electrical instruments which may be damaged by high magnetic fields. Keep away from foodstuffs, beverages and feed. Wash hands before breaks and at the end of shift. Avoid contact with the eyes and skin Hand Protection: Avoid repeated and prolonged contact with the skin, use protective gloves, especially when handling magnetized parts or parts which may have sharp edges. Preventive skin protection by use of skin protecting agents is recommended. Eye Protection: During metal processing, . Safety glasses. Respiratory Protection: During metal processing, . If exposure limits are exceeded or irritation is experienced, NIOSH approved respiratory protection should be worn. Breathing Mask, (Apparatus w/ Particle Filter P2/P3): Full face mask (EN 136); Breathing mask (EN149) FFP2 or FFP3; 10 times the limit value (FFP2); 30 times the limit value (FFP3); Recommendation: P3. Environmental Exposure Controls: Ensure adequate ventilation, especially in confined areas. Section 9: Physical and Chemical Properties 9.1. Information on Basic Physical and Chemical Properties Note: The physical and chemical properties of this section refer to the unplated permanent magnet alloy. No values are available for the coating itself. Physical State : Solid Appearance : parts Color : Metallic Odor : Odorless. Odor Threshold : No data available pH : No data available Evaporation Rate : No data available Melting Point : 1220 - 1320 °C (2228 - 2408 °F) Freezing Point : No data available Boiling Point : No data available Flash Point : No data available Auto-ignition Temperature : No data available Decomposition Temperature : No data available Flammability (solid, gas) : No data available Vapor Pressure : No data available Relative Vapor Density at 20 °C : No data available Relative Density : No data available Density : 8.3 g/cc Solubility : Water: Insoluble Partition Coefficient: N-octanol/water : No data available Viscosity : No data available SDS SMC, Rev 1.0, 09Feb2024 Page 3 of 6 ``` ## Page 4 ```text Explosive Properties : Omitted (in the provided form). See Section 2 and/or 7. Oxidizing Properties : No data available 9.2. Other Information No additional information available Section 10: Stability and Reactivity 10.1 Reactivity: Hazardous reactions will not occur under normal conditions. 10.2 Chemical Stability: Product is stable. 10.3 Possibility of Hazardous Reactions: Hydrogen is released in contact with acid which can cause explosive gas mixtures. 10.4 Conditions to Avoid: Avoid exposure of powdered magnet material to air, oxygen or halogenated hydrocarbons and to elevated temperatures above 150° C. Do not use or store in conditions as follows: acidic, alkaline or electrically conductive liquids, corrosive gases. 10.5 Incompatible Materials: Fine powders are incompatible with air, oxygen, halogenated hydrocarbons with strong oxidizers. Avoid acids and other oxidizing agents. 10.6 Hazardous Decomposition Products: No dangerous decomposition products known. Section 11: Toxicological Information 11. Information On Toxicological Effects Acute Toxicity: The following applies for the pure substance. Cobalt (7440-48-4) Oral Rat LD50 6170 mg/kg (rat) Primary irritant effect: Cobalt in the form of inhalable dust can lead to hypersensitization when inhaled. Also, it is possible the sensitization develops if the surface is chromated and if repeated and extended skin contact with this chromated surface occurs. Symptoms/Injuries After Skin Contact: During metal processing, . : Irritant to skin and mucous membranes. Rare earths (section 2) cause skin irritation depending on grain size (powder) (Skin Irrit 2) see sensitization. Symptoms/Injuries After Eye Contact: Dust generated from material cutting may cause a slight irritation. : Rare earths (section 2) cause eye irritation depending on grain size (powder) (Eye Irrit. 2) Slivers may be generated, which could cause mechanical irritation or injure the eye. Sensitization: in the case of repeated and prolonged contact with the skin with metallic cobalt there is a possibility of sensitization. Subacute to chronic toxicity: In certain countries, cobalt is the form of inhalable dust is classified as category 3 carcinogenic. Additional toxicological information: When used and handled according to specifications, the product does not have any harmful effects according to our experience and the information provided to us. Carcinogenic categories 7440-48-4 Cobalt 2B NTP (National Toxicity Program) None of the ingredients is listed Section 12: Ecological Information (non-mandatory) 12.1 Toxicity Aquatic Toxicity No further relevant information available Persistence and Degradability No further relevant information available Behavior in Environmental Systems Bio accumulative Potential No further relevant information available Mobility in Soil No further relevant information available Results of PBT and vPvB Assessment Not applicable Other Adverse Effects No further relevant information available 12.2. Persistence and Degradability: No further relevant information available 12.3. Bio accumulative Potential: No further relevant information available 12.4. Mobility in Soil: No additional information available: No further relevant information available 12.5. Other Adverse Effects: No additional information available Section 13: Disposal Considerations (non-mandatory) 13.1. Waste treatment methods Sewage Disposal Recommendations: Do not empty into drains; dispose of this material and its container in a safe way. Waste Disposal Recommendations: Dispose of waste material in accordance with all local, regional, national, and international regulations. SDS SMC, Rev 1.0, 09Feb2024 Page 4 of 6 ``` ## Page 5 ```text Section 14: Transport Information (non-mandatory) Transport/Additional Information 14.1. Land transport DOT/TDG Remarks: Non-hazardous goods from the standpoint of the specified regulations. ATTENTION: Packing boxes with magnetized parts inside generate magnetic fields and are able to attract magnetizable materials. 14.2. Transport by Sea IMDG Remarks: Non-hazardous goods from the standpoint of the specified regulations. ATTENTION: Packing boxes with magnetized parts inside generate magnetic fields and are able to attract magnetizable materials. 14.3. Air Transport ICAO-TI and IATA-DGR: Non magnetized parts: Not classified as hazardous goods as understood in the ordinance given. Magnetized parts in packaging units: Conduct test for classification as per IATA regulations (see Class 9/Packing Instruction 902) If test is positive, the following apply: ICAO/IATA class: Class 9/Page 172 UN/ID number: 2807 Correct technical name: Magnetized materials Section 15: Regulatory Information (non-mandatory) 15.1 US Federal Regulations Safety, health and environmental regulations/legislation specific for the substance or mixture SARA Section 355 (extremely hazardous substances): None of the ingredients is listed SARA Section 313 (Specific toxic chemical listings): Cobalt (7440-48-4) TSCA (Toxic Substances Control Act): All ingredients listed. Chemicals known to cause reproductive toxicity: Females: None of the ingredients is listed Males: None of the ingredients is listed Chemicals known to cause developmental toxicity: None of the ingredients is listed Cancerogenity categories EPA (Environmental Protection Agency): None of the ingredients is listed. IARC (International Agency for Research on Cancer): Cobalt (7440-48-4) 2B, 2A NTP (National Toxicology Program): None of the ingredients is listed. TLV (Threshold Limit Value established by ACGIH): Cobalt (7440-48-4) A3 Cobalt (7440-48-4) Listed on the United States TSCA (Toxic Substances Control Act) inventory Listed on United States SARA Section 313 SARA Section 313 - Emission Reporting 0.1 % 15.2 US State Regulations Cobalt (7440-48-4) U.S. - California - Proposition 65 - Carcinogens List WARNING: This product contains chemicals known to the State Of California to cause cancer. MAK (German Maximum Workplace Concentration): Cobalt (7440-48-4) 2 NIOSH-Ca (National Institute for Occupational Safety and Health): None of the ingredients is listed OSHA-Ca (Occupational Safety & Health Administration: None of the ingredients is listed National regulations: Other regulations, limitations and prohibitive regulations Guidelines 67/548/ECC, 1999/45/EC 1272/2008/EG (CLP) 1907/2006/EG (REACH) German Hazardous Substances PLEASE NOTE: Magnetized parts generate magnetic fields and are able to attract magnetizable materials. This may result in injury during handling of magnets. Electronic devices and measure tools may be changed in calibration or damaged by the high magnetic field strength. Please kee magnetized magnets away from computers, displays and magnetic storage devices. Especially people with heart pacemakers must keep away from magnetic fields. Chemical Safety Assessment: VOID (for articles) SDS SMC, Rev 1.0, 09Feb2024 Page 5 of 6 ``` ## Page 6 ```text Section 16: Other Information The information is based on our present knowledge. However, this shall not constitute a guarantee for any specific product features and shall not establish a legally valid contractual relationship. Relevant phrases (Wording of safety instructions quoted Substances and mixtures which in contact with water emit flammable ga
concerning pure substances (powder). H228 Flammable solid H315 Cause skin irritation H317 May cause an allergic skin reaction H319 Causes serious eye irritation H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled H413 May cause long lasting harmful effects to aquatic life. R11 Highly flammable R36/38 Irritating to eyes and skin R42/43 May cause sensitization by inhalation and skin contact R53 May cause long-term adverse effects in aquatic environment. Department issuing MSDS Contact Abbreviations and acronyms IMDG: International Maritime Code for Dangerous Goods IATA : International Air Transport Association ICAO: International Civil Aviation Organization ACGIH : American Conference of Governmental Industrial Hygienists LC60: Lethal Concentration, 50% LD50: Lethal Dose, 50 % Sources This information is based on our current knowledge and is intended to describe the product for the purposes of health, safety and environmental requirements only. It should not therefore be construed as guaranteeing any specific property of the product. SDS SMC, Rev 1.0, 09Feb2024 Page 6 of 6 ```