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Chlorine Dioxide Electrolyte Powder Safety Data Sheet According To Federal Register Vol 77 No 58 Monday March 26 2012 Rules And Regulations Revision Date 11 09 2018 Date of issue 10 10 2018 Version 1 1 SECTION 1 IDENTIFICATION 1 1 Product Identifier Product Form Substance Product Name Chlorine Dioxide Electrolyte Powder CAS No 7758 19 2 Product Code 193 0101 01 Formula NaClO2 1 2 Intended Use of the Product Use of the substance mixture No use specified 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 GHS US classification Ox Sol 1 H271 Acute Tox 3 Oral H301 Acute Tox 2 Dermal H310 Acute Tox 2 Inhalation dust mist H330 Skin Corr 1B H314 Eye Dam 1 H318 STOT RE 2 H373 Aquatic Acute 1 H400 Aquatic Chronic 3 H412 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 H271 May cause fire or explosion strong oxidizer H301 Toxic if swallowed H310 H330 Fatal in contact with skin or if inhaled H314 Causes severe skin burns and eye damage H373 May cause damage to organs through prolonged or repeated exposure H400 Very toxic to aquatic life H412 Harmful to aquatic life with long lasting effects P210 Keep away from extremely high or low temperatures ignition sources and incompatible materials No smoking P220 Keep Store away from combustible material oxidizable materials and incompatible materials P221 Take any precaution to avoid mixing with combustible material oxidizable materials and incompatible materials P260 Do not breathe vapors mist or spray P262 Do not get in eyes on skin or on clothing P264 Wash hands forearms and other exposed areas thoroughly after handling P270 Do not eat drink or smoke when using this product GHS03 Precautionary Statements GHS US 11 09 2018 EN English US GHS05 GHS06 GHS08 GHS09 1 7

Chlorine Dioxide Electrolyte Powder Safety Data Sheet According to Federal Register Vol 77 No 58 Monday March 26 2012 Rules and Regulations P271 Use only outdoors or in a well ventilated area P273 Avoid release to the environment P280 Wear protective gloves protective clothing and eye protection P283 Wear fire flame resistant retardant clothing P284 In case of inadequate ventilation wear respiratory protection P301 P310 If swallowed Immediately call a poison center or doctor 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 P306 P360 If on clothing Rinse immediately contaminated clothing and skin with plenty of water before removing clothes P310 Immediately call a poison center or doctor P314 Get medical advice attention if you feel unwell P320 Specific treatment is urgent see section 4 on this SDS P330 Rinse mouth P361 Take off immediately all contaminated clothing P363 Wash contaminated clothing before reuse P370 P378 In case of fire Use appropriate media see section 5 to extinguish P371 P380 P375 In case of major fire and large quantities Evacuate area Fight fire remotely due to the risk of explosion P391 Collect spillage P403 P233 Store in a well ventilated place Keep container tightly closed P405 Store locked up P501 Dispose of contents container in accordance with local regional national and international regulations 2 3 Other Hazards Exposure may aggravate pre existing eye skin or respiratory conditions Oxidation or acidification may generate explosive and corrosive chlorine dioxide gas Take appropriate precautions 2 4 Unknown Acute Toxicity GHS US No data available SECTION 3 COMPOSITION INFORMATION ON INGREDIENTS 3 1 Substance Name CAS No Name Sodium chlorite Chlorine Dioxide Electrolyte Powder 7758 19 2 Product Identifier CAS No 7758 19 2 100 GHS US classification Ox Sol 1 H271 Acute Tox 3 Oral H301 Acute Tox 2 Dermal H310 Acute Tox 2 Inhalation dust mist H330 Skin Corr 1B H314 Eye Dam 1 H318 STOT RE 2 H373 Aquatic Acute 1 H400 Aquatic Chronic 3 H412 Full text of H phrases see section 16 3 2 Mixture Not applicable 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 11 09 2018 EN English US 2 7

Chlorine Dioxide Electrolyte Powder Safety Data Sheet According to Federal Register Vol 77 No 58 Monday March 26 2012 Rules and Regulations First aid Measures After Inhalation First take proper precautions to ensure your own safety before attempting rescue e g wear appropriate respiratory protective equipment use the buddy system then remove the exposed person to fresh air Keep at rest in a position comfortable for breathing Immediately call a POISON CENTER or doctor physician First aid Measures After Skin Contact Remove contaminated clothing Immediately flush skin with plenty of water for at least 60 minutes Wash contaminated clothing before reuse Immediately call a POISON CENTER or doctor First aid Measures After Eye Contact Get immediate medical advice attention Rinse cautiously with water for at least 60 minutes Remove contact lenses if present and easy to do Continue rinsing First aid Measures After Ingestion Do NOT induce vomiting Rinse mouth Immediately call a POISON CENTER or doctor 4 2 Most important symptoms and effects both acute and delayed Symptoms Injuries Toxic if swallowed Fatal in contact with skin Fatal if inhaled Causes severe skin burns and eye damage Causes serious eye damage May cause damage to organs through prolonged or repeated exposure Symptoms Injuries After Inhalation Inhalation of this material can cause serious health effects in small amounts leading to unconsciousness and death May be corrosive to the respiratory tract Symptoms Injuries After Skin Contact This material is fatal through skin contact in small amounts This material can be absorbed through the skin and eyes 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 This material is toxic in small amounts orally and can cause adverse health effects or death May cause burns or irritation of the linings of the mouth throat and gastrointestinal tract Chronic Symptoms May cause damage to organs through prolonged or repeated exposure 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 SECTION 5 FIRE FIGHTING MEASURES 5 1 Extinguishing Media Suitable Extinguishing Media Water spray dry chemical foam carbon dioxide Unsuitable Extinguishing Media Do not use a heavy water stream Use of heavy stream of water may spread fire 5 2 Special Hazards Arising From the Substance or Mixture Fire Hazard May cause fire or explosion strong oxidizer Explosion Hazard Product is not explosive but may evolve explosive chlorine dioxide gas when pressurized or heated Heat may build pressure rupturing closed containers spreading fire and increasing risk of burns and injuries Reactivity Oxidizer increases the burning rate of combustible materials May form explosive chlorine dioxide gas on contact with incompatible materials such as acid May react exothermically with water releasing heat Adding an acid to a base or 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 In case of major fire and large quantities Evacuate area Fight fire remotely due to the risk of explosion Protection During Firefighting Do not enter fire area without proper protective equipment including respiratory protection 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 Keep away from heat hot surfaces sparks open flames and other ignition sources No smoking Keep away from combustible material Do not get in eyes on skin or on clothing Do not breathe dust 6 1 1 For Non emergency Personnel Protective Equipment Use appropriate personal protection equipment PPE Emergency Procedures Evacuate unnecessary personnel 6 1 2 For Emergency Responders Protective Equipment Equip cleanup crew with proper protection Emergency Procedures 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 Material for Containment and Cleaning Up For Containment As an immediate precautionary measure isolate spill or leak area in all directions Ventilate area Contain solid spills with appropriate barriers and prevent migration and entry into sewers or streams Use only non sparking tools 11 09 2018 EN English US 3 7

Chlorine Dioxide Electrolyte Powder Safety Data Sheet According to Federal Register Vol 77 No 58 Monday March 26 2012 Rules and Regulations Methods for Cleaning Up Clean up spills immediately and dispose of waste safely Do not take up in combustible material such as saw dust or cellulosic material Recover the product by vacuuming shoveling or sweeping 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 cause or intensify fire oxidizer May release corrosive and flammable gas Precautions for Safe Handling Wash hands and other exposed areas with mild soap and water before eating drinking or smoking and when leaving work Keep away from heat sparks open flames hot surfaces combustible materials incompatible materials No smoking Handle empty containers with care because they may still present a hazard Use only outdoors or in a well ventilated area Do not breathe dust Do not get in eyes on skin or on clothing Hygiene Measures Handle in accordance with good industrial hygiene and safety procedures 7 2 Conditions for Safe Storage Including Any Incompatibilities Technical Measures Comply with applicable regulations Proper grounding procedures to avoid static electricity should be followed Storage Conditions Keep container closed when not in use Keep in fireproof place Store locked up Store in a dry cool place Keep Store away from direct sunlight extremely high or low temperatures and incompatible materials Incompatible Products Strong acids strong bases strong oxidizers 7 3 Specific End Use s No use specified 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 8 2 Exposure Controls Appropriate Engineering Controls Personal Protective Equipment Materials for Protective Clothing Hand Protection Eye Protection Skin and Body Protection Respiratory Protection Other Information Emergency eye wash fountains and safety showers should be available in the immediate vicinity of any potential exposure Ensure adequate ventilation especially in confined areas Gas detectors should be used when flammable gases or vapors may be released Proper grounding procedures to avoid static electricity should be followed Gas detectors should be used when toxic gases may be released Ensure all national local regulations are observed Gloves Protective clothing Protective goggles Face shield Insufficient ventilation wear respiratory protection Chemically resistant materials and fabrics Wear protective gloves Chemical goggles or 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 or where exposure levels are not known wear approved respiratory protection 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 Appearance Odor Odor Threshold pH Evaporation Rate 11 09 2018 EN English US Solid White crystalline powder No data available No data available No data available No data available 4 7

Chlorine Dioxide Electrolyte Powder Safety Data Sheet According to Federal Register Vol 77 No 58 Monday March 26 2012 Rules and Regulations 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 175 C 347 F 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 Solubility 39 grams per 100cc cold water Partition Coefficient N Octanol Water No data available Viscosity No data available Oxidizing Properties May cause fire or explosion strong oxidizer 9 2 Other Information No additional information available SECTION 10 STABILITY AND REACTIVITY 10 1 Reactivity Oxidizer increases the burning rate of combustible materials May form explosive chlorine dioxide gas on contact with incompatible materials such as acid May react exothermically with water releasing heat Adding an acid to a base or base to an acid may cause a violent reaction 10 2 Chemical Stability May cause fire or explosion strong oxidizer 10 3 Possibility of Hazardous Reactions Hazardous polymerization will not occur 10 4 Conditions to Avoid Direct sunlight extremely high or low temperatures ignition sources combustible materials incompatible materials 10 5 Incompatible Materials Strong acids strong bases strong oxidizers 10 6 Hazardous Decomposition Products Thermal decomposition generates Chlorine Chlorine dioxide Sodium oxides Corrosive vapors SECTION 11 TOXICOLOGICAL INFORMATION 11 1 Information On Toxicological Effects Acute Toxicity Oral Toxic if swallowed Dermal Fatal in contact with skin Inhalation dust mist Fatal if inhaled Chlorine Dioxide Electrolyte Powder 7758 19 2 ATE Oral 165 00 mg kg body weight ATE Dermal 107 20 mg kg body weight ATE Dust Mist 0 23 mg l 4h Sodium chlorite 7758 19 2 LD50 Oral Rat 165 mg kg LD50 Dermal Rabbit 107 2 mg kg LC50 Inhalation Rat 230 mg m Exposure time 4 h LC50 Inhalation Rat 0 23 mg l 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 Sodium chlorite 7758 19 2 IARC group 3 Reproductive Toxicity Not classified Specific Target Organ Toxicity Single Exposure Not classified Specific Target Organ Toxicity Repeated Exposure May cause damage to organs through prolonged or repeated exposure Aspiration Hazard Not classified Symptoms Injuries After Inhalation Inhalation of this material can cause serious health effects in small amounts leading to unconsciousness and death May be corrosive to the respiratory tract 11 09 2018 EN English US 5 7

Chlorine Dioxide Electrolyte Powder Safety Data Sheet According to Federal Register Vol 77 No 58 Monday March 26 2012 Rules and Regulations Symptoms Injuries After Skin Contact This material is fatal through skin contact in small amounts This material can be absorbed through the skin and eyes 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 This material is toxic in small amounts orally and can cause adverse health effects or death May cause burns or irritation of the linings of the mouth throat and gastrointestinal tract Chronic Symptoms May cause damage to organs through prolonged or repeated exposure SECTION 12 ECOLOGICAL INFORMATION 12 1 Toxicity Ecology General Sodium chlorite 7758 19 2 LC50 Fish 1 EC50 Daphnia 1 LC 50 Fish 2 EC50 Daphnia 2 12 2 Very toxic to aquatic life Harmful to aquatic life with long lasting effects 100 500 mg l Exposure time 96 h Species Brachydanio rerio static 0 026 mg l Exposure time 48 h Species Daphnia magna 100 mg l Exposure time 96 h Species Lepomis macrochirus static 0 25 0 33 mg l Exposure time 48 h Species Daphnia magna Flow through Persistence and Degradability Chlorine Dioxide Electrolyte Powder 7758 19 2 Persistence and Degradability May cause long term adverse effects in the environment 12 3 Bioaccumulative Potential Chlorine Dioxide Electrolyte Powder 7758 19 2 Bioaccumulative Potential Not established 12 4 12 5 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 This material is hazardous to the aquatic environment Keep out of sewers and waterways SECTION 14 TRANSPORT INFORMATION 14 1 In Accordance with DOT Proper Shipping Name Hazard Class Identification Number Label Codes SODIUM CHLORITE 5 1 UN1496 5 1 Packing Group Marine Pollutant ERG Number II Marine pollutant 143 14 2 In Accordance with IMDG Proper Shipping Name Hazard Class Division Identification Number Packing Group Label Codes EmS No Fire EmS No Spillage SODIUM CHLORITE 5 1 5 1 UN1496 II 5 1 F H S Q Marine Pollutant Marine pollutant 14 3 In Accordance with IATA Proper Shipping Name Packing Group Identification Number Hazard Class Label Codes 11 09 2018 SODIUM CHLORITE II UN1496 5 1 5 1 EN English US 6 7

Chlorine Dioxide Electrolyte Powder Safety Data Sheet According to Federal Register Vol 77 No 58 Monday March 26 2012 Rules and Regulations Division ERG Code IATA 5 1 5L SECTION 15 REGULATORY INFORMATION 15 1 US Federal Regulations Chlorine Dioxide Electrolyte Powder 7758 19 2 SARA Section 311 312 Hazard Classes Fire hazard Immediate acute health hazard Delayed chronic health hazard Sodium chlorite 7758 19 2 Listed on the United States TSCA Toxic Substances Control Act inventory 15 2 US State Regulations Sodium chlorite 7758 19 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 List SECTION 16 OTHER INFORMATION INCLUDING DATE OF PREPARATION OR LAST REVISION Revision Date Other Information 03 23 2016 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 Acute Tox 2 Dermal Acute Tox 2 Inhalation dust mist Acute Tox 3 Oral Aquatic Acute 1 Aquatic Chronic 3 Eye Dam 1 Ox Sol 1 Skin Corr 1B STOT RE 2 H271 H301 H310 H314 H318 H330 H373 H400 H412 Acute toxicity dermal Category 2 Acute toxicity inhalation dust mist Category 2 Acute toxicity oral Category 3 Hazardous to the aquatic environment Acute Hazard Category 1 Hazardous to the aquatic environment Chronic Hazard Category 3 Serious eye damage eye irritation Category 1 Oxidizing solids Category 1 Skin corrosion irritation Category 1B Specific target organ toxicity repeated exposure Category 2 May cause fire or explosion strong oxidizer Toxic if swallowed Fatal in contact with skin Causes severe skin burns and eye damage Causes serious eye damage Fatal if inhaled May cause damage to organs through prolonged or repeated exposure Very toxic to aquatic life Harmful to aquatic life with long lasting effects 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 11 09 2018 EN English US 7 7