PRODUCT # FOR INDUSTRIAL USE ONLY KEEP OUT OF THE REACH OF CHILDREN EMERGENCY RESPONSE INFORMATION:

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1 S A F E T Y D A T A S H E E T NAME: 3141 Clifty Drive Madison, IN SECTION 1: PRODUCT AND COMPANY IDENTIFICATION ProClean DIOXIDE TYPE: Chlorine Dioxide E.P.A. Reg. No PRODUCT # FOR INDUSTRIAL USE ONLY KEEP OUT OF THE REACH OF CHILDREN EMERGENCY RESPONSE INFORMATION: CHEMTREC Company Offices: Hour Service Weekdays PREPARED DATE: PREPARED BY: Benjamin Terpening GHS Classification Signal Word Symbol Skin Irritation Eye Irritation Acute Toxicity - Inhalation WARNING SECTION 2: HAZARDS IDENTIFICATION Category 2 Category 2B Category 4 H315 H320 H332 Hazard Statements H315 Causes skin irritation H320 Causes eye irritation H332 Harmful if inhaled Precautionary Statements P261 Avoid breathing fume/gas/mist/vapors/spray P264 Wash hands, arms, and exposed areas thoroughly after handling. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P280 Wear protective gloves/protective clothing/eye protection/face protection. P302 + P352 IF ON SKIN: Wash with plenty of soap and water. P304 + P340 IF INHALED: Remove victim 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. P312 Call a POISON CENTER or doctor/physician if you feel unwell. P321 Specific treatment (see Section 4). P333 + P313 If skin irritation or rash occurs: Get medical advice/attention. P337 + P313 If eye irritation persists: Get medical advice/attention. P363 Wash contaminated clothing before reuse. P501 Dispose of contents/container to in accordance with local/regional/national/international regulations. SECTION 3: COMPOSITION / INFORMATION ON INGREDIENTS COMPONENT SYNONYM CAS NO. % BY WEIGHT Chlorine Dioxide None *If Chemical Name/CAS No is proprietary and/or % By Weight is listed as a range, the specific chemical identity and/or percentage of composition has been withheld as a trade secret* Page 1 of 5

2 SECTION 4: FIRST AID MEASURES DESCRIPTION OF FIRST AID MEASURES: EYES: If symptoms develop, move patient away from the source of exposure and into fresh air. Flush eyes gently with large amounts of water while holding eyelids apart. If symptoms persist or there is any visual difficulty, seek medical attention. SKIN: Concentrated solutions of the material (>1,000 ppm) may be highly irritating, especially on prolonged contact. Remove contaminated clothing immediately. Immediately flush exposed skin with large amounts of water. Wash thoroughly with mild soap. Consult a physician if irritation or burning persists. Contaminated clothing must be laundered before re-use. Lower concentrations (<1,000 ppm) may cause some irritation with very-prolonged exposure. First aid is not normally required when small amounts of material are ingested. If symptoms develop or if large amounts of material have been ingested, DO NOT induce vomiting. DO NOT give anything by mouth if the patient is unconscious. Drink large quantities of water. Consult a physician immediately. Neutralization and use of activated charcoal are not recommended. If symptoms develop, immediately move individual away from exposure and into fresh air. Seek immediate medical attention; keep person warm and quiet. If person is not breathing, begin artificial respiration. If breathing is difficult, administer oxygen. Monitor the patient closely for delayed development of pulmonary edema, which may occur up to 72 hours after inhalation. PRIMARY ROUTE(S) OF ENTRY: Inhalation, skin, and eyes. MOST IMPORTANT SYMPTOMS / EFFECTS, ACUTE AND DELAYED: EYE CONTACT: Causes eye irritation. SKIN CONTACT: Causes skin irritation. May be harmful if swallowed. Harmful if inhaled. CHRONIC SYMPTOMS: None expected under normal conditions of use. INDICATION OF ANY IMMEDIATE MEDICAL ATTENTION AND SPECIAL TREATMENT NEEDED, IF NECESSARY: If you experience any of the symptoms / effects listed above seek medical advice. SECTION 5: FIRE FIGHTING MEASURES EXTINGUISHING MEDIA: Use water to extinguish fire involving this product. SPECIFIC HAZARDS ARISING FROM THE SUBSTANCE OR MIXTURE: Chlorine dioxide solution is not explosive. Chlorine dioxide gas, which may evolve from chlorine dioxide solution, may spontaneously decompose with mild energy release at concentrations of 10% in air or greater at standard temperature and pressure (i.e., 76 mmhg partial pressure). Chlorine dioxide gas may explode with violent force at concentrations of 30% or greater in air at standard temperature and pressure (i.e., 76 mmhg partial pressure). ADVICE FOR FIRE FIGHTERS: Wear self-contained breathing apparatus and full protective clothing. Use water spray to keep containers cool. Hazardous Combustion Products: Chlorine dioxide gas, hydrochloric gas, chlorine gas, or oxygen gas. SECTION 6: ACCIDENTAL RELEASE MEASURES PERSONAL PRECAUTIONS, PROTECTIVE EQUIPMENT, AND EMERGENCY PROCEDURES: If run-off occurs, notify proper authorities of any runoff, as required. Person not wearing protective equipment should be excluded from area of spill until clean-up has been completed. METHODS AND MATERIALS FOR CONTAINMENT AND CLEANING UP: Large spills: Prevent runoff to sewers, streams, lakes or other bodies of water. Small spills: Absorb liquid on vermiculite, floor absorbent or other absorbent material. Flush area with water. Stop spill at source, dike area around spill to prevent spreading, and pump liquid to salvage tank. Remaining liquid may be taken on sand, clay, earth, vermiculite, floor absorbent, or other absorbent material and shoveled into containers. Flush with water the area which the bulk of the spill has been removed. Page 2 of 5

3 SECTION 7: HANDLING AND STORAGE PRECAUTIONS FOR SAFE HANDLING: In order to prevent the evolution of chlorine dioxide gas into the breathing zones of workers, agitation of the material should be minimized, and the material should not be stirred, mixed turbulently, sprayed or splashed. CONDITIONS FOR SAFE STORAGE, INCLUDING INCOMPATIBILITIES: The material should be stored indoors, only in the containers in which it is shipped, or in containers authorized by the manufacturer for such storage. Storage temperatures should be maintained above 50 F and below 110 F. The material should not be stored outside or exposed to direct sunlight or freezing temperatures (32 F or below). The material should not be heated to temperatures in excess of 140 F. At temperatures above 140 F, the gas concentration in the headspace of the container may reach high, energetically unstable concentrations. EXPOSURE GUIDELINES: SECTION 8: EXPOSURE CONTROLS / PERSONAL PROTECTION CHEMICAL IDENTITY CAS NO. OSHA PEL ACGIH TLV Chlorine Dioxide ppm 0.1 ppm ENGINEERING CONTROLS: Use good ventilation. Local exhaust is recommended if TLVs are exceeded. INDIVIDUAL PROTECTION MEASURES: Selection of personal protective equipment should be based upon the anticipated exposure and made in accordance with OSHA s Personal Protective Equipment Standard found in 29 CFR 1910 Subpart I. The following information may be used to assist in PPE selection. RESPIRATORY PROTECTION: Exposures in the workplace should be monitored to determine if worker exposure exceeds the facility-specified exposure action level or the use of the material produces adverse health effects or symptoms of exposures. Provide adequate ventilation to maintain all work areas at concentrations below 0.1 ppm chlorine dioxide concentration. If the generation of vapors or mists is possible, use local ventilation. Where gas concentration may exceed 0.1 ppm, only a NIOSH/MSHA approved full-face acid gas respiratory protection necessary. Proper engineering and/or administrative controls should be used to reduce worker exposure. The facility s respiratory protection program for medical evaluation. A NIOSH/MSHA approved self-contained breathing apparatus, with full face piece, is required for leaks and emergencies where the concentration may exceed 5 ppm. SKIN PROTECTION: Impermeable type rubber gloves. Other equipment as required to avoid contact EYE PROTECTION: Goggles necessary. GENERAL HYGIENE CONSIDERATIONS: Eyewash facility and emergency shower should be in close proximity. Always wash hands after handling any chemical. SECTION 9: PHYSICAL AND CHEMICAL PROPERTIES APPEARANCE: Liquid, yellow-green. ODOR: Sharp, pungent. ODOR THRESHOLD: 0.1 ppm. ph (100%): 5.0 MELTING POINT/FREEZING POINT 0 C (32 F) INITIAL BOILING POINT AND BOILING RANGE 100 C (212 F) FLASH POINT (METHOD USED) EVAPORATION RATE FLAMMABILITY (SOLID, GAS) UPPER/LOWER FLAMMABLE OR EXPLOSIVE LIMIT VAPOR PRESSURE VAPOR DENSITY SPECIFIC GRAVITY 1.0 SOLUBILITY IN WATER Complete. PARTITION COEFFICIENT: N-OCTANOL/WATER AUTO-IGNITION TEMPERATURE DECOMPOSITION TEMPERATURE VISCOSITY cp at 25 C Page 3 of 5

4 SECTION 10: STABILITY AND REACTIVITY REACTIVITY: Material is not reactive under normal conditions of storage and use. CHEMICAL STABILITY: The material, as solution, is stable in the dark. On exposure to light, the solution may decompose to an aqueous solution of chloride and chlorate ions. In regard to vapor (gas) that may evolve from the material, see Hazardous Decomposition Products below. POSSIBILITY OF HAZARDOUS REACTIONS: Material does not undergo hazardous polymerization. CONDITIONS TO AVOID: Storage temperatures should be maintained above 50 F and below 110 F. The material should not be heated to temperatures in excess of 140 F. INCOMPATIBLE MATERIALS: Avoid exposure to light. Avoid contact with: metals, reducing agents, strong oxidizing agents, sulfur compounds or sulfur-containing components, carbon monoxide, excessive heat, mercury, organic materials, phosphorous. HAZARDOUS DECOMPOSITION PRODUCTS: Gas-phase vapors that evolve from the material may decompose on exposure to light, on contact with incompatible materials (see above), or spontaneously at concentrations above 10% in air at standard temperature and pressure (76 mmhg). On decomposition, material may form: Chlorine gas, Hydrochloric acid gas and oxygen gas. ACUTE TOXICITY: LD50 AND LC50 DATA: ROUTES OF EXPOSURE / SYMPTOMS EYES: SKIN: GERM CELL MUTAGENICITY: TERATOGENICITY: CHRONIC EFFECTS / CARCINOGENICITY: SPECIFIC TARGET ORGAN TOXICITY (Repeated exposure): REPRODUCTIVE TOXICITY: SPECIFIC TARGET ORGAN TOXICITY (Single exposure): ASPIRATION HAZARD: COMPONENT INFORMATION: Chlorine Dioxide SECTION 11: TOXOLOGICAL INFORMATION Causes eye irritation. Causes skin irritation. May be harmful if swallowed. Harmful if inhaled. This material contains no ingredient above de minimus concentrations known or suspected to cause cancer. The fumes from this material may cause respiratory tract irritation, wheezing and difficulty breathing. In extreme cases, it may cause pulmonary damage and death. ECOTOXICITY COMPONENT INFORMATION Chlorine Dioxide PERSISTENCE AND DEGRADABILITY: BIOACCUMULATIVE POTENTIAL: MOBILITY IN SOIL: OTHER ADVERSE EFFECTS: SECTION 12: ECOLOGICAL INFORMATION The ecotoxicity of this product is not known. Material is inorganic and not subject to biodegradation. This material contains no hazardous air pollutants (HAPS). Page 4 of 5

5 WASTE DISPOSAL METHOD SECTION 13: DISPOSAL CONSIDERATIONS Disposal of this material should be in accordance with all applicable Federal, State and local rules, regulations and requirements. SECTION 14: TRANSPORTATION INFORMATION DOT PROPER SHIPPING NAME: Corrosive liquid, basic, inorganic, n.o.s. (contains chlorine dioxide) HAZARD CLASS: 8 IDENTIFICATION NUMBER: UN3266 PACKING GROUP: III EMERGENCY RESPONSE GUIDE: ERG #154 VOC: TSCA STATUS CERCLA REPORTABLE QUANTITY SECTION 15: REGULATORY INFORMATION 0 pounds per gallon (0 grams per liter). All ingredients are listed on the TSCA inventory. None established. SARA 311 / 312 HAZARD CLASSES x ACUTE HEALTH FIRE SUDDEN RELEASE OF PRESSURE CHRONIC HEALTH REACTIVE SARA 312 INFORMATION SARA 313 INFORMATION Storage of 10,000 pounds or more may require filing a Tier 2 form. Threshold planning quantity for reporting is 10,000 pounds. This material is not an extremely hazardous substance (EHS). This material contains the following substances subject to the reporting requirements of Section 313 of the Superfund Amendments and Reauthorization Act of 1986 and 40 CFR Part 372 CHEMICAL NAME CATEGORY CODE CAS NUMBER % BY WEIGHT Chlorine dioxide None STATE REGULATORY INFORMATION CALIFORNIA PROPOSITION 65 California has not identified the ingredients listed in Section 3 as known to cause cancer or reproductive toxicity. SECTION 16: OTHER INFORMATION SDS STATUS: Revised sections 1 and 16 on HEALTH 2 FLAMMABILITY 0 PHYSICAL HAZARD 0 FOR INDUSTRIAL USE ONLY KEEP OUT OF THE REACH OF CHILDREN Page 5 of 5