Handling Hydrogen Peroxide 34 Percent Safely
Strength changes the category entirely, so the hazard information belongs at the top rather than the bottom. At thirty-four percent this material carries the signal word DANGER. Safety data sheets for this concentration classify it as an oxidising liquid, as causing severe skin burns and eye damage, and as harmful if swallowed. It also carries respiratory irritation. For transport it is UN2014, hazard class 5.1, packing group two. Personal protection means goggles or safety glasses with a face shield, chemical resistant gloves changed often because liquid penetrates them, and an impervious apron. Store it cool, dry, out of direct sunlight and away from anything combustible, and keep it locked. Combustible material and reducing agents are the incompatibilities to avoid. Peroxide decomposes slowly and gives off oxygen as it does, so it must never be decanted into a sealed container that cannot vent. On skin contact remove contaminated clothing at once and rinse. On eye contact rinse for several minutes and call a poison centre.
Dilution Rates and the One Thing an Oxidizer Cannot Do
Nothing here goes into a reservoir neat. Dilution is one part product to eleven parts water, which takes the thirty-four percent solution down to roughly three. Only the diluted three percent solution is then used, at about three millilitres per litre of water, or two and a half teaspoons per gallon. In a recirculating reservoir the effect holds for around four days. On a drain to waste system, where nothing is being recirculated, the guidance is every week or two instead. The material breaks down into water and oxygen, and it reacts with free chlorine in a supply. Now the limitation that decides whether it belongs in your programme at all. This material is not selective in any way. It cannot distinguish between the organisms you want gone and a beneficial bacterial or fungal inoculant you paid for. A peroxide routine and a biological routine therefore do not run in the same system, so choose one of them. This product is intended for cleaning and maintenance within hydroponic operations and is not approved for pest management.
Key Features
- Concentration: Thirty-four percent, in a five gallon container
- Signal word: DANGER, as an oxidising liquid and a corrosive
- Transport: UN2014, hazard class 5.1, packing group two
- Protection: Goggles with a face shield, chemical resistant gloves and an apron
- Storage: Cool, dry, out of sunlight, away from combustibles and locked up
- Venting: It releases oxygen as it decomposes, so never seal it in
- Dilution: One part to eleven parts water, giving roughly three percent
- Working rate: About three millilitres of the three percent per litre of water
- Duration: Around four days in a recirculating reservoir
- Incompatible with: Any beneficial bacterial or fungal programme
Technical Specifications
| Specification | Value |
|---|---|
| SKU | H2O25G |
| Concentration | 34 percent |
| Volume | 5 gallon |
| Intended use | Cleaning hydroponic equipment, materials and growing areas |
| Not approved for | Pest management or other unapproved uses |
| GHS classification | Oxidising liquid, skin corrosion 1A, serious eye damage 1 |
| Additional hazards | Harmful if swallowed; respiratory irritation |
| Signal word | DANGER |
| UN number | UN2014 |
| DOT hazard class | 5.1 |
| Packing group | II |
| PPE | Goggles or glasses with face shield, chemical gloves, impervious apron |
| Incompatible materials | Combustible material and reducing agents |
| Storage | Cool, dry, out of direct sunlight, locked up, vented closure |
| Dilution | 1 part product to 11 parts water, giving about 3 percent |
| Reservoir rate | About 3 ml of the 3 percent per litre, or 2.5 tsp per gallon |
| Recirculating life | About 4 days |
| Drain to waste | Every one to two weeks |
| Origin | Produced in the United States |