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Nitrogen Dioxide Electrolyte Safety Data Sheet According To Federal Register Vol 77 No 58 Monday March 26 2012 Rules And Regulations Date of Issue 11 14 2018 Version 1 0 SECTION 1 IDENTIFICATION 1 1 Product Identifier Product Form Mixture Product Name Nitrogen Dioxide Electrolyte Product Code 193 0102 00 1 2 Intended Use of the Product Use of the Substance Mixture Industrial Use 1 3 Name Address and Telephone of the Responsible Party Company Advanced Calibration Designs Inc 2024 W McMillan Street Tucson Arizona 85705 USA 1 520 290 2855 1 4 Emergency Telephone Number Emergency Number 1 833 737 2444 1 833 737 2444 International SECTION 2 HAZARDS IDENTIFICATION 2 1 Classification of the Substance or Mixture Met Corr 1 H290 Skin Corr 1A H314 Eye Dam 1 H318 Aquatic Acute 3 H402 Full text of hazard classes and H statements see section 16 2 2 Label Elements GHS US Labeling Hazard Pictograms GHS US Signal Word GHS US Hazard Statements GHS US Danger H290 May be corrosive to metals H314 Causes severe skin burns and eye damage H318 Causes serious eye damage H402 Harmful to aquatic life P234 Keep only in original container P260 Do not breathe mist spray vapors fume P264 Wash hands forearms and other exposed areas thoroughly after handling P273 Avoid release to the environment P280 Wear protective gloves protective clothing and eye protection 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 shower P304 P340 If inhaled Remove person to fresh air and keep at rest in a position 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 P321 Specific treatment see section 4 on this SDS P363 Wash contaminated clothing before reuse P390 Absorb spillage to prevent material damage P405 Store locked up P406 Store in corrosive resistant container with a resistant inner liner P501 Dispose of contents container in accordance with local regional national and international regulations GHS05 Precautionary Statements GHS US 11 14 2018 EN English US 1 7

Nitrogen Dioxide Electrolyte Safety Data Sheet According to Federal Register Vol 77 No 58 Monday March 26 2012 Rules and Regulations 2 3 Other Hazards Exposure may aggravate pre existing eye skin or respiratory conditions 2 4 Unknown Acute Toxicity GHS US No data available SECTION 3 COMPOSITION INFORMATION ON INGREDIENTS 3 1 Substance Not applicable 3 2 Mixture Name Water Nitric acid Product Identifier CAS No 7732 18 5 CAS No 7697 37 2 65 70 30 35 GHS US classification Not classified Ox Liq 3 H272 Met Corr 1 H290 Skin Corr 1A H314 Eye Dam 1 H318 Aquatic Acute 3 H402 Full text of H phrases see section 16 SECTION 4 FIRST AID MEASURES 4 1 Description of First aid Measures First aid Measures General Never give anything by mouth to an unconscious person If you feel unwell seek medical advice show the label where possible First aid Measures After Inhalation Remove to fresh air and keep at rest in a position comfortable for breathing Immediately call a poison center or doctor physician First aid Measures After Skin Contact Immediately flush skin with plenty of water for at least 30 minutes Immediately remove contaminated clothing Get immediate medical advice attention First aid Measures After Eye Contact Immediately rinse with water for at least 30 minutes Remove contact lenses if present and easy to do Continue rinsing Get immediate medical advice attention First aid Measures After Ingestion Rinse mouth Do NOT induce vomiting Obtain emergency medical attention 4 2 Most Important Symptoms and Effects Both Acute and Delayed Symptoms Injuries Causes severe skin burns and eye damage Overexposure to this material may result in methemoglobinemia Methemoglobinemia decreases the blood s ability to carry oxygen and results in symptoms such as dizziness drowsiness headache shortness of breath blue skin and lips rapid heart rate unconsciousness and possibly death Symptoms Injuries After Inhalation May be corrosive to the respiratory tract May cause pulmonary edema Symptoms may be delayed Symptoms Injuries After Skin Contact Causes severe irritation which will progress to chemical burns Symptoms Injuries After Eye Contact Causes permanent damage to the cornea iris or conjunctiva Symptoms Injuries After Ingestion May cause burns or irritation of the linings of the mouth throat and gastrointestinal tract Chronic Symptoms None known 4 3 Indication of Any Immediate Medical Attention and Special Treatment Needed If exposed or concerned get medical advice and attention If medical advice is needed have product container or label at hand Acute respiratory effects including pulmonary edema may be delayed Causes methemoglobinemia emergency response should treat appropriately such as by intravenous administration of methylene blue SECTION 5 FIRE FIGHTING MEASURES 5 1 Extinguishing Media Suitable Extinguishing Media Water spray fog Unsuitable Extinguishing Media Do not use a heavy water stream Use of heavy stream of water may spread fire Dry chemical foam carbon dioxide and halon may provide limited control if product is involved in a fire 5 2 Special Hazards Arising From the Substance or Mixture Fire Hazard Not considered flammable but may burn at high temperatures In its current concentration of 65 nitric acid this product is not flammable or considered an oxidizer If concentrated 65 w w of nitric acid or distilled to dryness this product can become a strong oxidizing substance and may accelerate burning when involved in a fire If concentrated mixture is spilled onto combustible material paper rags clothing it is liable to ignite and start a fire use appropriate precautions Explosion Hazard Contact with metallic substances may release flammable hydrogen gas 11 14 2018 EN English US 2 7

Nitrogen Dioxide Electrolyte Safety Data Sheet According to Federal Register Vol 77 No 58 Monday March 26 2012 Rules and Regulations Reactivity May be corrosive to metals Contact with metals may evolve flammable hydrogen gas Can react violently with reducing agents strong bases organic materials and finely divided metals May react exothermically with water releasing heat adding an acid to a base or a base to an acid may cause a violent reaction 5 3 Advice for Firefighters Precautionary Measures Fire Exercise caution when fighting any chemical fire Firefighting Instructions Use water spray or fog for cooling exposed containers Remove containers from fire area if this can be done without risk Do not breathe fumes from fires or vapors from decomposition Protection During Firefighting Do not enter fire area without proper protective equipment including respiratory protection Hazardous Combustion Products Nitric oxide nitrogen dioxide Corrosive vapors Toxic fumes may be released Other Information Do not allow run off from fire fighting to enter drains or water courses SECTION 6 ACCIDENTAL RELEASE MEASURES 6 1 Personal Precautions Protective Equipment and Emergency Procedures General Measures Do not breathe vapor mist or spray Do not get in eyes on skin or on clothing 6 1 1 For Non Emergency Personnel Protective Equipment Use appropriate personal protective equipment PPE Emergency Procedures Evacuate unnecessary personnel 6 1 2 For Emergency Personnel Protective Equipment Equip cleanup crew with proper protection Emergency Procedures Ventilate area Upon arrival at the scene a first responder is expected to recognize the presence of dangerous goods protect oneself and the public secure the area and call for the assistance of trained personnel as soon as conditions permit 6 2 Environmental Precautions Prevent entry to sewers and public waters Avoid release to the environment 6 3 Methods and Materials for Containment and Cleaning Up For Containment Contain any spills with dikes or absorbents to prevent migration and entry into sewers or streams As an immediate precautionary measure isolate spill or leak area in all directions Methods for Cleaning Up Clean up spills immediately and dispose of waste safely Ventilate area Cautiously neutralize spilled liquid Absorb and or contain spill with inert material Transfer spilled material to a suitable container for disposal Contact competent authorities after a spill 6 4 Reference to Other Sections See Section 8 for exposure controls and personal protection and Section 13 for disposal considerations SECTION 7 HANDLING AND STORAGE 7 1 Precautions for Safe Handling Additional Hazards When Processed May be corrosive to metals May release corrosive vapors Precautions for Safe Handling Do not breathe mist spray vapors fume Do not get in eyes on skin or on clothing Wash hands and other exposed areas with mild soap and water before eating drinking or smoking and when leaving work Handle empty containers with care because they may still present a hazard Use appropriate personal protective equipment PPE Hygiene Measures Handle in accordance with good industrial hygiene and safety procedures Wash contaminated clothing before reuse 7 2 Conditions for Safe Storage Including Any Incompatibilities Technical Measures Comply with applicable regulations Storage Conditions Keep container closed when not in use Store in a dry cool and well ventilated place Keep Store away from direct sunlight extremely high or low temperatures and incompatible materials Store in original container or corrosive resistant and or lined container Store locked up in a secure area Incompatible Materials Strong acids strong bases strong oxidizers Combustible materials Organic materials Reducing agents Hydrogen sulfide Alcohols Chromic acid chromates Chlorides Metals May be corrosive to metals 7 3 Specific End Use s Industrial Use SECTION 8 EXPOSURE CONTROLS PERSONAL PROTECTION 8 1 Control Parameters For substances listed in section 3 that are not listed here there are no established exposure limits from the manufacturer supplier importer or the appropriate advisory agency including ACGIH TLV AIHA WEEL NIOSH REL or OSHA PEL Nitric acid 7697 37 2 USA ACGIH ACGIH TWA ppm 2 ppm USA ACGIH ACGIH STEL ppm 4 ppm 11 14 2018 EN English US 3 7

Nitrogen Dioxide Electrolyte Safety Data Sheet According to Federal Register Vol 77 No 58 Monday March 26 2012 Rules and Regulations USA NIOSH USA NIOSH USA NIOSH USA NIOSH USA IDLH USA OSHA USA OSHA 8 2 NIOSH REL TWA mg m NIOSH REL TWA ppm NIOSH REL STEL mg m NIOSH REL STEL ppm US IDLH ppm OSHA PEL TWA mg m OSHA PEL TWA ppm 5 mg m 2 ppm 10 mg m 4 ppm 25 ppm 5 mg m 2 ppm Exposure Controls Appropriate Engineering Controls Personal Protective Equipment Materials for Protective Clothing Hand Protection Eye and Face Protection Skin and Body Protection Respiratory Protection Environmental Exposure Controls Other Information Ensure adequate ventilation especially in confined areas Ensure all national local regulations are observed Emergency eye wash fountains and safety showers should be available in the immediate vicinity of any potential exposure Gloves Protective clothing Protective goggles Face shield Insufficient ventilation wear respiratory protection Chemically resistant materials and fabrics Corrosion proof clothing Wear protective gloves Chemical safety goggles and face shield Wear suitable protective clothing If exposure limits are exceeded or irritation is experienced approved respiratory protection should be worn In case of inadequate ventilation oxygen deficient atmosphere or where exposure levels are not known wear approved respiratory protection Avoid release to the environment When using do not eat drink or smoke SECTION 9 PHYSICAL AND CHEMICAL PROPERTIES 9 1 Information on Basic Physical and Chemical Properties Physical State Liquid Appearance No data available Odor No data available Odor Threshold No data available pH No data available Evaporation Rate No data available Melting Point No data available 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 Not applicable Vapor Pressure No data available Relative Vapor Density at 20 C No data available Relative Density No data available Solubility No data available Partition Coefficient N Octanol Water No data available Viscosity No data available 9 2 Other Information No additional information available SECTION 10 STABILITY AND REACTIVITY 10 1 Reactivity May be corrosive to metals Contact with metals may evolve flammable hydrogen gas Can react violently with reducing agents strong bases organic materials and finely divided metals May react exothermically with water releasing heat adding an acid to a base or a base to an acid may cause a violent reaction 10 2 Chemical Stability Stable under recommended handling and storage conditions see section 7 11 14 2018 EN English US 4 7

Nitrogen Dioxide Electrolyte Safety Data Sheet According to Federal Register Vol 77 No 58 Monday March 26 2012 Rules and Regulations 10 3 Possibility of Hazardous Reactions Hazardous polymerization will not occur 10 4 Conditions to Avoid Direct sunlight extremely high or low temperatures and incompatible materials 10 5 Incompatible Materials Strong acids strong bases strong oxidizers Combustible materials Organic materials Reducing agents Hydrogen sulfide Alcohols Chromic acid chromates Chlorides Metals May be corrosive to metals 10 6 Hazardous Decomposition Products Thermal decomposition generates Corrosive vapors Nitrogen oxides SECTION 11 TOXICOLOGICAL INFORMATION 11 1 Information on Toxicological Effects Acute Toxicity Not classified Nitric acid 7697 37 2 LC50 Inhalation Rat 0 126 mg l 4h LC50 Inhalation Rat 2500 ppm 1h LC50 Inhalation Rat 130 mg l 4h ATE Gases 1 250 00 ppmV 4h Skin Corrosion Irritation Causes severe skin burns and eye damage Serious Eye Damage Irritation Causes serious eye damage Respiratory or Skin Sensitization Not classified Germ Cell Mutagenicity Not classified Carcinogenicity Not classified Reproductive Toxicity Not classified Specific Target Organ Toxicity Single Exposure Not classified Specific Target Organ Toxicity Repeated Exposure Not classified Aspiration Hazard Not classified Symptoms Injuries After Inhalation May be corrosive to the respiratory tract May cause pulmonary edema Symptoms may be delayed Symptoms Injuries After Skin Contact Causes severe irritation which will progress to chemical burns Symptoms Injuries After Eye Contact Causes permanent damage to the cornea iris or conjunctiva Symptoms Injuries After Ingestion May cause burns or irritation of the linings of the mouth throat and gastrointestinal tract Chronic Symptoms None known SECTION 12 ECOLOGICAL INFORMATION 12 1 Toxicity Ecology General Nitric acid 7697 37 2 LC50 Fish 1 12 2 Not established Bioaccumulative Potential Nitrogen Dioxide Electrolyte Bioaccumulative Potential Nitric acid 7697 37 2 Log Pow 12 4 12 5 72 mg l Persistence and Degradability Nitrogen Dioxide Electrolyte Persistence and Degradability 12 3 Harmful to aquatic life Not established 2 3 at 25 C Mobility in Soil No additional information available Other Adverse Effects Other Information Avoid release to the environment SECTION 13 DISPOSAL CONSIDERATIONS 13 1 Waste Treatment Methods Waste Disposal Recommendations Dispose of contents container in accordance with local regional national and international regulations Additional Information Container may remain hazardous when empty Continue to observe all precautions Ecology Waste Materials Avoid release to the environment This material is hazardous to the aquatic environment Keep out of sewers and waterways 11 14 2018 EN English US 5 7

Nitrogen Dioxide Electrolyte Safety Data Sheet According to Federal Register Vol 77 No 58 Monday March 26 2012 Rules and Regulations SECTION 14 TRANSPORT INFORMATION The shipping description s stated herein were prepared in accordance with certain assumptions at the time the SDS was authored and can vary based on a number of variables that may or may not have been known at the time the SDS was issued 14 1 In Accordance with DOT Proper Shipping Name Hazard Class Identification Number Label Codes NITRIC ACID other than red fuming with more than 20 percent and less than 65 percent nitric acid 8 UN2031 8 Packing Group ERG Number II 157 14 2 In Accordance with IMDG Proper Shipping Name Hazard Class Identification Number Packing Group Label Codes EmS No Fire EmS No Spillage 14 3 NITRIC ACID other than red fuming with less than 65 nitric acid 8 UN2031 II 8 F A S B In Accordance with IATA Proper Shipping Name Packing Group Identification Number Hazard Class Label Codes NITRIC ACID other than red fuming with 20 but 65 nitric acid II UN2031 8 8 ERG Code IATA 8L SECTION 15 REGULATORY INFORMATION 15 1 US Federal Regulations Nitrogen Dioxide Electrolyte SARA Section 311 312 Hazard Classes Physical hazard Corrosive to metals Health hazard Serious eye damage or eye irritation Health hazard Skin corrosion or Irritation Nitric acid 7697 37 2 Listed on the United States TSCA Toxic Substances Control Act inventory Listed on the United States SARA Section 302 Subject to reporting requirements of United States SARA Section 313 CERCLA RQ 1000 lb SARA Section 302 Threshold Planning Quantity TPQ 1000 lb SARA Section 313 Emission Reporting 1 Water 7732 18 5 Listed on the United States TSCA Toxic Substances Control Act inventory 15 2 US State Regulations Nitric acid 7697 37 2 U S Massachusetts Right To Know List U S New Jersey Right to Know Hazardous Substance List U S Pennsylvania RTK Right to Know Environmental Hazard List U S Pennsylvania RTK Right to Know List SECTION 16 OTHER INFORMATION INCLUDING DATE OF PREPARATION OR LAST REVISION Date of Preparation or Latest Revision Other Information 11 14 2018 This document has been prepared in accordance with the SDS requirements of the OSHA Hazard Communication Standard 29 CFR 1910 1200 GHS Full Text Phrases 11 14 2018 EN English US 6 7

Nitrogen Dioxide Electrolyte Safety Data Sheet According to Federal Register Vol 77 No 58 Monday March 26 2012 Rules and Regulations Aquatic Acute 3 Eye Dam 1 Met Corr 1 Ox Liq 3 Skin Corr 1A H272 H290 H314 H318 H402 Hazardous to the aquatic environment Acute Hazard Category 3 Serious eye damage eye irritation Category 1 Corrosive to metals Category 1 Oxidizing liquids Category 3 Skin corrosion irritation Category 1A May intensify fire oxidizer May be corrosive to metals Causes severe skin burns and eye damage Causes serious eye damage Harmful to aquatic life 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 US GHS HazCom False 11 14 2018 EN English US 7 7