Safety Data Sheet Distributor:  SPI Supplies / Structure Probe Inc. 206 Garfield Avenue West Chester, PA 19380 Phone: 610-436-5400; 1-800-242-4774 Fax: 610-436-5755 Email: sales @2spi.com SPI Catalog #’s: 05049-AB, 05052-AB, 05053-AB, and 05053GAL-AB Section 1: Identification of the Substance/Mixture and of the  Company/Undertaking 1.1 Product identifier Product ・ Vacseal® High Vacuum Leak Sealant, Liquid Name Synonyms •  Vacseal® Vacuum Leak Sealant, Liquid, with brush, Clear 1.2 Relevant identified uses of the substance or mixture and uses advised against Relevant identified use(s) Primarily used for sealing leaks in high and ultra-high vacuum systems. 1.3 Details of the supplier of the safety data sheet Manufacturer Space Environment Labs-Vacseal Inc. 4949 N. Broadway Boulder Colorado 80304 www.vacseal.net 1-303-443-4090 Worldwide Distributor: Structure Probe, Inc. www.2spi.com 1-610-436-5755 1.4 Emergency telephone number • 1-(800)-424-9300 - Chemtrec • 1-(703)-741-5970 - Worldwide Section 2: Hazards  Identification EU/EEC According to: Regulation (EC) No 1272/2008 (CLP)/REACH 1907/2006 [amended by 2015/830] 2.1 Classification of the substance or mixture CLP Aspiration 1 - H - 304 Skin Irritation 2 - H315 Eye Irritation 2 - H319 Specific Target Organ Toxicity Single Exposure 3: Narcotic Effects - H336 Germ Cell Mutagenicity 2 - H341 Carcinogenicity 1B - H350 Specific Target Organ Toxicity Repeated Exposure 2 - H373 Hazardous to the aquatic environment Chronic 3 - H412 2.2 Label Elements CLP Warning
United States (US) According to: OSHA 29 CFR 1910.1200 HCS 2.1 Classification of the substance or mixture OSHA HCS 2012 Aspiration 1 Skin Irritation 2 Eye Irritation 2 Specific Target Organ Toxicity Single Exposure 3 Respiratory Tract Irritation 3 Specific Narcotic Effects 3 Germ Cell Mutagenicity 2 Carcinogenicity 1A Reproductive Toxicity 1B Specific Target Organ Toxicity Repeated Exposure 2 2.2 Label elements OSHA HCS 2012 Warning
2.3 Other hazards OSHA HCS 2012 •  Under United States Regulations (29 CFR 1910.1200 - Hazard Communication Standard), this product is considered hazardous. Section 3 - Composition/Information on Ingredients 3.1 Substances •  Material does not meet the criteria of a  substance.
3.2 Mixtures

See Section 16 for full text of H-statements.
Section 4 - First Aid Measures
4.1 Description of first aid measures Inhalation Skin Move victim to fresh air. Administer oxygen if breathing is difficult. Give artificial respiration if victim is not breathing. Give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Get medical attention immediately. Wash skin with soap and water. Remove contaminated clothing. If irritation develops and persists, get medical attention. In case of contact with substance, immediately flush eyes with running water for Eye at least 20 minutes. If eye irritation persists: Get medical advice/attention. Ingestion Do NOT induce vomiting. Obtain medical attention immediately if ingested. 4.2 Most important symptoms and effects, both acute and delayed Refer to Section 11 - Toxicological Information. 4.3 Indication of any immediate medical attention and special treatment needed Notes to Physician Consideration should be given to the possibility that overexposure to materials other than this product may have occurred. Section 5 - Firefighting Measures 5.1 Extinguishing media Suitable Extinguishing Media water fog or spray, dry chemical Unsuitable Extinguishing Media 5.2 Special hazards arising from the substance or mixture Unusual Fire and Explosion Hazards Containers may explode when heated. Vapors may form explosive mixtures when combined other vapors. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors combine and travel to source of ignition and flash back. 5.3 Advice for firefighters Wear positive pressure self-contained breathing apparatus (SCBA). Cool containers with flooding quantities of water until well after fire is out. Section 6 - Accidental Release Measures 6.1 Personal precautions, protective equipment and emergency procedures Personal Precautions Personal Protective Equipment:  Respirator and exhaust ventilation, protective googles, protective gloves and protective clothing. Emergency Procedures Use absorbent material to contain and collect spill, wear PPE above. 6.2 Environmental precautions Prevent entry into waterways, sewers, basements or confined areas. 6.3 Methods and material for containment and cleaning up Containment/Clean-up Measures Contain and collect spill with absorbent materials wearing PPE. Place wet absorbent material in container, contact local authorities for Haz-Mat waste disposal.
7.1 Precautions for safe handling Handling Use only in well ventilated areas. Wear appropriate personal protective equipment. Do not breathe mist, vapors or spray. Avoid contact with skin, eyes, and clothing. Wash thoroughly with soap and water after handling and before eating, drinking. 7.2 Conditions for safe storage, including any incompatibilities Storage Store in a tightly closed container at room temperature. Refer to Section 1.2 - Relevant identified uses. 7.3 Specific end use(s)
Section 8 - Exposure Controls/Personal  Protection
8.1 Control parameters
8.2 Exposure controls Engineering Meāsures/Controls Good general ventilation should be used. Ventilation rates should be matched to conditions. If applicable, use process enclosures, local exhaust ventilation, or other engineering controls to maintain airborne levels below recommended exposure limits. If exposure limits have not been established, maintain airborne levels to an acceptable level. Personal Protective Equipment Respiratory Follow the OSHA respirator regulations found in 29 CFR 1910.134. Use a NIOSH/MSHA approved respirator if exposure limits are exceeded or symptoms are experienced. Wear protective splash safety goggles, protective chemical gloves/clothing. Eye/Face/Hands Key to abbreviations ACGIH = American Conference of Governmental Industrial Hygiene NIOSH = National Institute of Occupational Safety and Health OSHA = Occupational Safety and Health Administration STEL = Short Term Exposure Limits are based on 15-minute exposures TWA = Time-Weighted Averages are based on 8h/day, 40h/week exposures
9.1 Information on Basic Physical and Chemical Properties
9.2 Other Information No additional physical and chemical parameters  noted.
Section 10: Stability and Reactivity
10.1 Reactivity No dangerous reaction known under conditions of normal use. 10.2 Chemical stability Stable under normal temperatures and pressures. 10.3 Possibility of hazardous reaction Not classified as a reactivity hazard.
Embryo or Fetus:Fetal death: Reproductive Effects:Specific Developmental Abnormalities:Musculoskeletal system: Tumorigen / Carcinogen: Inhalation-Mouse TCLo • 750 ppm 6 Hour(s) 2 Year(s)-Intermittent; Tumorigenic:Carcinogenic by RTECS criteria; Lungs, Thorax, or Respiration:Bronchiogenic carcinoma; Liver:Tumors; Inhalation-Rat TCLo • 750 ppm 6 Hour(s) 2 Year(s)-Intermittent; Tumorigenic:Carcinogenic by RTECS criteria; Kidney, Ureter, and Bladder;Tumors; Inhalation-Rat TCLo • 23400 mg/kg 104 Week(s)-Intermittent; Tumorigenic:Equivocal tumorigenic agent by RTECS criteria; Kidney, Ureter, and Bladder:Kidney tumors; Reproductive Effects:Tumorigenic Effects:Testicular tumors
Inhalation Acute (Immediate) Chronic (Delayed) • May cause respiratory irritation. May affect the central nervous system. Symptoms may include dizziness, drowsiness, lethargy, coma and death. • Exposure to relatively low concentrations of ethylbenzene for several days to weeks resulted in potentially irreversible damage to the inner ear and hearing of animals. Skin Acute (Immediate) Chronic (Delayed) Eve Acute (Immediate) Chronic  (Delayed) • Causes skin irritation. • Repeated exposure may cause skin dryness or cracking. • Causes serious eye irritation. • No data available Ingestion Acute (Immediate) • Material may be aspirated into lungs during ingestion and/or subsequent vomiting. Revision Date: 30/January/2020 Aspiration of this material will cause severe lung injury, chemical pneumonitis, pulmonary edema or death. • No data available Chronic  (Delayed) Mutagenic Effects • Repeated and prolonged exposure may cause mutagenic effects. Carcinogenic Effects • Repeated and prolonged exposure may cause cancer.

Reproductive Effects
• Repeated and prolonged exposure may cause reproductive effects. Key to abbreviations LC = Lethal Concentration LD = Lethal Dose TC = Toxic Concentration TD = Toxic Dose
Section 12 - Ecological Information
12.1 Toxicity

•  Harmful to aquatic life with long lasting effects. 12.2 Persistence and degradability •  Material data lacking. 12.3 Bio accumulative potential •  Material data lacking. 12.4 Mobility in Soil • Material data lacking. 12.5 Results of PBT and vPvB assessment • No PBT and vPvB assessment has been conducted. 12.6 Other adverse effects •  No studies have been found.
Section 13 - Disposal  Considerations
13.1 Waste treatment methods Product waste • Dispose of content and/or container in accordance with local, regional, national, and/or international regulations. • Dispose of content and/or container in accordance with local, regional, national, and/or international regulations. Packaging waste
Section 14 - Transport Information
14.1 Proper Shipping Name: Silicone resin solution 14.3 UN/NA ID:
14.5 Labels: Not Applicable 14.6 Special precautions In case of spill, prevent entry into waterway or confined area. Contain and collect spill with absorbent materials, wear PPE.  Dispose of wet materials in bag or container, close and contact local authorities for Haz-Mat waste disposal. 14.7 Transport in bulk
Section 15 - Regulatory Information
15.1 Safety, health and environmental regulations/legislation specific for the substance or mixture SARA Hazard Classifications   • Acute, Chronic

Canada

Environment Canada - CEPA - Priority Substances List • Ethylbenzene
• Xylene • Trichloroethylene
United States
Labor U.S. - OSHA - Process Safety Management - Highly Hazardous Chemicals • Ethylbenzene 100-41-4 Not Listed Vacseal® High Vacuum Leak Sealant, Liquid
15.2 Chemical Safety Assessment •  No Chemical Safety Assessment has been carried  out. 15.3 Other Information •  WARNING: This product contains a chemical known to the State of California to cause cancer, birth defects or other reproductive harm.
Section 16 - Other Information
Relevant Phrases (code & full text) •  H312 - Harmful in contact with skin H332 - Harmful if  inhaled Revision Date • 30/January/2020 Preparation Date • 30/January/2020 Disclaimer/Statement of Liability •   The information stated in this Safety Data Sheet is designed only as guidance for safe handling, use, storage, transportation, and disposal. This Product should be used only in the context of its intended manner of use and include proper assessment of the appropriateness by the end user. The information relates only to the specific material designated and may not be valid when used in combination with any other materials or if this product has been re-packaged, renamed or relabeled. 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 or revisions.