SECTION 1Identification
| Product identifier | Hydrogen Peroxide 35% |
| Other means of identification | Hydrogen peroxide, 35% aqueous solution, stabilized. CAS No. 7722-84-1. Product code WY-H35. |
| Recommended use | Industrial and laboratory raw material: oxidizing and bleaching agent for formulating cleaning products. |
| Restrictions on use | Industrial and laboratory use only. Not for consumer use. Do not mix with flammable or combustible materials, organic solvents or metals. Do not return unused material to the original container. |
| Supplier (U.S.) | Weyland-Yutani Specialty Chemicals 2122 Nostromo Way, Hadley's Hope Industrial Park Main office: (555) 555-0196 Regulatory contact: C. Burke, Product Stewardship |
| Emergency telephone | (555) 555-0197, 24 hours (Weyland-Yutani emergency line). In a medical emergency, call 911. |
SECTION 2Hazard identification
Classification (29 CFR 1910.1200(d))
- Oxidizing liquids, Category 2
- Acute toxicity, oral, Category 4
- Skin corrosion/irritation, Category 2
- Serious eye damage/eye irritation, Category 1
- Specific target organ toxicity, single exposure, Category 3 (respiratory tract irritation)
Label elements
Signal word: DANGER Hazard statements:
|    Flame over circle | Corrosion | Exclamation mark |
| Precautionary statements: Prevention | Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. Keep away from clothing and other combustible materials. Avoid breathing mist or vapors. Use only outdoors or in a well-ventilated area. Wash hands and any exposed skin thoroughly after handling. Do not eat, drink or smoke when using this product. Wear protective gloves, protective clothing, eye protection and face protection. |
| Response | If swallowed: Call a poison center or doctor if you feel unwell. Rinse mouth. If on skin: Wash with plenty of water. If skin irritation occurs: Get medical attention. Take off contaminated clothing and wash it before reuse. If inhaled: Remove person to fresh air and keep comfortable for breathing. Call a poison center or doctor if you feel unwell. If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a poison center or doctor. In case of fire: Use water to extinguish. |
| Storage | Store in a well-ventilated place. Store locked up. |
| Disposal | Dispose of contents and container in accordance with federal, state and local regulations (see Section 13). |
| Hazards not otherwise classified | None identified. Note: the solution slowly gives off oxygen as it decomposes. Containers have vented closures; do not replace them with solid caps (see Sections 7 and 10). |
| Ingredients of unknown acute toxicity | None. |
SECTION 3Composition/information on ingredients
Substance (aqueous solution).
| Chemical name | Common name and synonyms | CAS No. | Concentration (wt %) |
|---|---|---|---|
| Hydrogen peroxide | Hydrogen dioxide; peroxide | 7722-84-1 | 35 |
| Water | Water | 7732-18-5 | 65 |
Stabilizing additives (such as phosphoric acid and sodium stannate) are present at less than 0.1% and do not contribute to the classification.
SECTION 4First-aid measures
| Inhalation | Move the person to fresh air and keep comfortable for breathing. If breathing is difficult, trained personnel give oxygen. If not breathing, give rescue breathing. Get medical attention if symptoms persist. |
| Skin contact | Flush skin immediately with plenty of water while removing contaminated clothing and shoes. Rinse contaminated clothing thoroughly with water before it dries. Get medical attention if irritation persists. |
| Eye contact | Flush immediately with water for at least 15 minutes, holding eyelids open. Remove contact lenses if easy to do. Continue rinsing on the way to medical care. Get medical attention immediately. |
| Ingestion | Rinse mouth. Do NOT induce vomiting. If the person is conscious, give a small amount of water. Get medical attention immediately. |
| Most important symptoms and effects, acute and delayed | Irritation of the eyes, nose and throat; corneal ulcer and serious eye damage; skin redness and blisters; bleaching of hair. |
| Immediate medical attention and special treatment | Immediate medical attention is required for any eye contact or ingestion. Continue flushing the eyes on the way to medical care. |
SECTION 5Fire-fighting measures
| Suitable extinguishing media | Water. Flood the fire area with water from a distance. Water spray to cool containers exposed to fire. |
| Unsuitable extinguishing media | Do not use dry chemicals or foams. Carbon dioxide gives only limited control. |
| Specific hazards | Not combustible, but an oxidizer: it accelerates burning and can ignite combustible materials such as wood, paper, oil and clothing. Decomposition releases oxygen. Containers may explode when heated. Runoff can create a fire hazard if it reaches combustible materials. |
| Special protective equipment and precautions for fire-fighters | Positive-pressure SCBA. Structural fire-fighters' protective clothing gives only limited chemical protection. Cool containers with water from a safe distance. Contain runoff. |
SECTION 6Accidental release measures
| Personal precautions, protective equipment and emergency procedures | Keep people away and upwind. Isolate the spill area at least 150 ft (50 m) in all directions (ERG Guide 140). Only trained responders wearing the PPE in Section 8 (goggles, face shield, chemical-resistant gloves, boots and apron or suit) enter the spill area. Responders follow the employer's emergency response plan. |
| Methods and materials for containment and cleaning up | Stop the leak if it can be done safely. Keep combustible materials (wood, paper, oil, rags) away from the spill. Small spills: soak up with a non-combustible absorbent such as vermiculite or sand. Do not use sawdust, paper towels or other combustible absorbents. Place the absorbent in a clean, vented plastic container, keep it away from combustibles, and label it for disposal. Large spills: dike well ahead of the spill for later disposal. Do not get water inside containers. Rinse the area with plenty of water and collect the rinse water. Keep out of storm drains, sewers and waterways. |
| Release reporting | Hydrogen peroxide is not a CERCLA hazardous substance and has no reportable quantity (40 CFR 302.4). State and local reporting rules may apply. See Section 15. |
SECTION 7Handling and storage
| Precautions for safe handling | Use clean equipment made of compatible materials. Never return unused material to the original container; contamination speeds up decomposition. Avoid creating mist. Do not get in eyes, on skin or on clothing. Keep away from combustible materials, organic solvents and metals. Do not eat, drink or smoke in work areas. Provide eyewash and quick-drench facilities in the work area (29 CFR 1910.151(c)). |
| Conditions for safe storage, including incompatibilities | Store upright in the original container with its vented closure in place, in a cool, well-ventilated area away from heat. Store separately from flammable and combustible materials, organic solvents and metals. Do not store in cabinets with flammable liquids. Keep containers clean on the outside. Supplied in 1-gallon containers with vented caps. |
SECTION 8Exposure controls/personal protection
Occupational exposure limits
| Ingredient (CAS) | OSHA PEL (Table Z-1) | NIOSH REL | ACGIH TLV | NIOSH IDLH |
|---|---|---|---|---|
| Hydrogen peroxide (7722-84-1) | TWA 1 ppm (1.4 mg/m³) | TWA 1 ppm (1.4 mg/m³) | TWA 1 ppm | 75 ppm |
| Appropriate engineering controls | General ventilation is normally adequate. Use local exhaust, such as a laboratory fume hood, when transferring, heating or mixing. Eyewash and quick-drench shower in the work area. |
| Eye/face protection | Chemical splash goggles and a face shield. |
| Skin protection | Chemical-resistant gloves (for example nitrile, neoprene or butyl rubber), apron and boots. Confirm breakthrough time with the glove manufacturer's data. Do not wear leather or cotton gloves. Remove clothing that becomes wet or contaminated, and rinse it thoroughly with water. |
| Respiratory protection | Use under a written respiratory protection program meeting 29 CFR 1910.134. NIOSH: up to 10 ppm, any supplied-air respirator (APF 10); up to 25 ppm, any supplied-air respirator in continuous-flow mode (APF 25); up to 50 ppm, any SCBA with full facepiece or any supplied-air respirator with full facepiece (APF 50); up to 75 ppm, any supplied-air respirator with full facepiece in pressure-demand or other positive-pressure mode (APF 2,000). Above 75 ppm (IDLH) or unknown concentrations: pressure-demand SCBA with full facepiece, or pressure-demand supplied-air respirator with full facepiece and an auxiliary self-contained positive-pressure breathing apparatus. Escape: air-purifying full-facepiece respirator (gas mask) with a canister for hydrogen peroxide, or escape-type SCBA. |
SECTION 9Physical and chemical properties
| Physical state | Liquid (aqueous solution) |
| Color | Colorless |
| Odor; odor threshold | Slightly sharp odor. Odor threshold: no data available. |
| Melting point/freezing point | -33 °C (-27 °F) (35% solution) |
| Boiling point | 108 °C (226 °F) (35% solution) |
| Flammability | Not flammable. Oxidizer: can intensify the burning of other materials. |
| Lower/upper flammability limit | Not applicable |
| Flash point | Not applicable (not flammable) |
| Auto-ignition temperature | Not applicable (not flammable) |
| Decomposition temperature | No data available. Decomposes slowly at room temperature to water and oxygen; heat and contamination speed this up. |
| pH | About 4.6 (35% solution) |
| Kinematic viscosity | About 1 mm²/s (dynamic viscosity 1.11 mPa·s) |
| Solubility | Mixes completely with water |
| Partition coefficient n-octanol/water (log Kow) | Not applicable (inorganic) |
| Vapor pressure; evaporation rate | Total vapor pressure 24 hPa (18 mmHg) at 30 °C; hydrogen peroxide partial pressure 0.48 hPa (0.36 mmHg) at 30 °C (35% solution). Evaporation rate: no data available |
| Density/relative density | Relative density 1.13 at 25 °C (35% solution); about 9.4 lb/gal |
| Relative vapor density | No data available |
| Particle characteristics | Not applicable (liquid) |
SECTION 10Stability and reactivity
| Reactivity | Strong oxidizer. Decomposes to water and oxygen, giving off heat. Decomposition speeds up with heat and with contamination, especially by metals and their salts. |
| Chemical stability | Stable as supplied (stabilized) in clean, vented original containers. Slowly releases oxygen during storage. |
| Possibility of hazardous reactions | Concentrated peroxide may decompose violently in contact with iron, copper, chromium and most other metals or their salts. Solvents such as acetone, ethanol and glycerol can detonate when mixed with hydrogen peroxide above 30% concentration. Readily oxidizable materials, or alkaline substances containing heavy metals, may react violently. Contact with combustible materials may cause fire. Containers may burst or explode if heated, contaminated or sealed so that oxygen cannot vent. |
| Conditions to avoid | Heat; contamination; returning used material to the container; blocking or replacing vented closures; contact with incompatible materials. |
| Incompatible materials | Oxidizable materials, including combustibles (wood, paper, cloth, oil) and organic solvents such as acetone, ethanol and glycerol; iron, copper, brass, bronze, chromium, zinc, lead, silver and manganese, and their salts; alkaline substances containing heavy metals. |
| Hazardous decomposition products | Oxygen, which supports combustion, and water. |
SECTION 11Toxicological information
| Likely routes of exposure | Skin and eye contact, ingestion, inhalation of vapor or mist. |
| Symptoms | Irritation of the eyes, nose and throat; corneal ulcer; skin redness and blisters (erythema, vesiculation); bleaching of hair. |
| Target organs | Eyes, skin, respiratory system. |
| Acute toxicity (numerical measures) | Oral LD50 (rat), 35% solution: 1,193 mg/kg (male), 1,270 mg/kg (female). Category 4 under Table A.1.1. Dermal LD50 (rabbit), 35% solution: greater than 2,000 mg/kg. Not classified. Inhalation: no deaths in rats at the highest vapor concentration that could be generated (49.3% solution, LC50 greater than 170 mg/m³). Not classified. |
| Skin corrosion/irritation | Category 2. The 35% solution was moderately irritating and not corrosive to rabbit skin. |
| Serious eye damage/irritation | Category 1. The 35% solution was corrosive to the rabbit eye. |
| Respiratory or skin sensitization | Not classified. |
| Germ cell mutagenicity; reproductive toxicity | Not classified. |
| Specific target organ toxicity, single exposure | Category 3, respiratory tract irritation. Vapor and mist of solutions of 35% and above irritate the nose, throat and airways. |
| Specific target organ toxicity, repeated exposure; aspiration | Not classified. |
| Delayed, immediate and chronic effects | Immediate: irritation of the eyes, skin and respiratory tract; serious eye damage. Delayed and chronic: none known. |
| Interactive effects | No information available. |
| Carcinogenicity | IARC Group 3 (not classifiable as to its carcinogenicity to humans). Not listed by NTP (Report on Carcinogens) or OSHA. |
SECTION 12Ecological information
| Ecotoxicity | Hydrogen peroxide: Daphnia pulex EC50 2.4 mg/L (48 h); marine alga Skeletonema costatum NOEC 0.63 mg/L; mallard duck oral LD50 1,049 mg/kg (35% solution). |
| Persistence and degradability | Short-lived in the environment; breaks down to water and oxygen. Not persistent. |
| Bioaccumulative potential | Not expected to bioaccumulate. |
| Mobility in soil | Mobile; fully water-soluble. |
| Other adverse effects | Toxic to aquatic organisms at low concentrations (see Ecotoxicity) until it breaks down. |
SECTION 13Disposal considerations
Discarded unused product is an ignitable hazardous waste, D001, because it is an oxidizer (40 CFR 261.21(a)(4)). Hydrogen peroxide is not a listed P or U waste. Do not mix with other wastes, especially organic or combustible wastes. Do not discharge to sewers or storm drains. Manage under 40 CFR Parts 260 through 273 and state rules. Manage empty containers under 40 CFR 261.7.
SECTION 14Transport information
| UN number | UN2014 |
| UN proper shipping name | Hydrogen peroxide, aqueous solutions with not less than 20 percent but not more than 40 percent hydrogen peroxide (stabilized as necessary) |
| Transport hazard class | 5.1 (subsidiary hazard 8) |
| Packing group | II |
| Basic description (49 CFR 172.202) | UN2014, Hydrogen peroxide, aqueous solutions with not less than 20 percent but not more than 40 percent hydrogen peroxide, 5.1, (8), II. The actual concentration may be shown in place of the range: "Hydrogen peroxide, aqueous solution with 35 percent hydrogen peroxide" (49 CFR 172.101(c)(6)). Hazard labels: OXIDIZER and CORROSIVE. |
| Environmental hazards | Not a hazardous substance (not listed in 40 CFR 302.4; no RQ). Not a marine pollutant (not listed in Appendix B to 49 CFR 172.101). |
| Transport in bulk (IMO instruments) | No information available. |
| Special precautions | Emergency Response Guidebook Guide 140. Special provisions A2, A3, B53, IB2, IP5, T7, TP2, TP6, TP24, TP37 (IP5 and TP24: bulk packagings must be able to vent). Packaging: 49 CFR 173.152 (exceptions), 173.202 (non-bulk), 173.243 (bulk). Vessel stowage D, codes 25, 66, 75. |
| Air (49 CFR 172.101, columns 9A and 9B) | Passenger aircraft or railcar: maximum 1 L net per package. Cargo aircraft only: maximum 5 L net per package. Special provision A2: single packagings are not permitted on aircraft. |
SECTION 15Regulatory information
| TSCA | Listed on the TSCA Inventory. |
| CERCLA (40 CFR 302.4) | Not listed. No reportable quantity. |
| Clean Water Act 311 (40 CFR 116.4) | Not a designated hazardous substance. |
| EPCRA 302 (40 CFR 355, Appendix A) | Hydrogen peroxide is an extremely hazardous substance only at concentrations above 52%. This 35% solution is not. |
| EPCRA 311/312 (40 CFR 370) | Hazardous chemical under the OSHA HCS. Reporting threshold 10,000 lb on site at any one time (40 CFR 370.10(a)(2)(i)). |
| EPCRA 313 (40 CFR 372.65) | Not listed. No supplier notification required. |
| Clean Air Act 112(r) (40 CFR 68.130) | Not a listed regulated substance. |
| OSHA Process Safety Management (29 CFR 1910.119) | Appendix A lists hydrogen peroxide at 52% by weight or greater (threshold quantity 7,500 lb). This 35% solution is not covered. |
| OSHA medical services and first aid (29 CFR 1910.151(c)) | Where the eyes or body of any person may be exposed to injurious corrosive materials, suitable facilities for quick drenching or flushing of the eyes and body must be provided within the work area for immediate emergency use. |
SECTION 16Other information, including date of preparation or last revision
| Date of preparation or last revision | February 10, 2025. Version 2.0. Supersedes June 7, 2021. |
| Revision note | Updated to the Hazard Communication Standard as amended May 20, 2024 (89 FR 44144) and corrected October 9, 2024 (89 FR 81829). |
| Abbreviations | ACGIH: American Conference of Governmental Industrial Hygienists. APF: assigned protection factor. ERG: Emergency Response Guidebook. IARC: International Agency for Research on Cancer. IDLH: immediately dangerous to life or health. LC50/LD50: concentration or dose lethal to 50% of test animals. NOEC: no observed effect concentration. PEL: permissible exposure limit. REL: recommended exposure limit. RQ: reportable quantity. SCBA: self-contained breathing apparatus. TLV: threshold limit value. TWA: time-weighted average. |