Product Overview
Hydrogen Peroxide 25% ACS Grade is a stabilized aqueous solution of hydrogen peroxide (H2O2, CAS 7722-84-1) at 25% concentration, carrying the ACS Grade designation. It is a colorless liquid oxidizer with a slightly sharp odor, offered in pack sizes from 1 quart bottles up to 275 and 330 gallon totes. The buyers we pack it for are laboratory and QC teams that specify ACS Grade for reagent work, water-treatment operators dosing an oxidizer, and industrial users running bleaching or oxidation steps who need a mid-strength peroxide with grade documentation behind it.
This is an oxidizer with a Danger signal word (per the product's GHS classification). It is a working chemical, not a household product, and this page is written for people who handle it that way.
Why This Concentration
At 25%, hydrogen peroxide sits in the working range where a single solution covers most oxidation, bleaching, and treatment duties without the handling burden of stronger concentrations. It ships under UN2014 as a Class 5.1 oxidizer with a Packing Group II designation (per 49 CFR 172.101), so receiving it means treating it as regulated hazmat — the trade-off a buyer accepts for the higher active-oxygen content per gallon compared to dilute retail-strength peroxide.
Pick 25% when your process consumes peroxide fast enough that dilute solutions mean constant re-dosing, or when you dilute in-house to your own working strength. If your bench work needs less oxidizing power, step down to Hydrogen Peroxide 12% ACS Grade or Hydrogen Peroxide 15% ACS Grade. If your method calls for a stronger solution, Hydrogen Peroxide 30% ACS Grade is the common laboratory step up. And if your application is industrial rather than analytical — tank cleaning, effluent treatment, general oxidation — Hydrogen Peroxide 25% Technical Grade delivers the same concentration without the ACS designation that lab procurement typically specifies.
The ACS Grade label matters at the purchase-order level: analytical and research buyers write "ACS" into specs when purity documentation is part of their workflow. Review the certificate of analysis for your lot against your own method requirements before committing it to analytical use.
Chemical Profile
Hydrogen peroxide, formula H2O2, has a molecular weight of 34.015 and carries CAS number 7722-84-1. As a 25% w/w aqueous solution it is a colorless liquid with a slightly sharp odor and a density of 1.09 at 20 °C. It is fully miscible in practical terms — solubility is greater than or equal to 100 mg/mL at 72 °F — and its vapor pressure is low, about 1 mmHg at 59.5 °F. The solution is stabilized against decomposition, but stabilization slows the reaction; it does not stop it. Heat, light, and contamination all accelerate breakdown into water and oxygen, which is why container choice and storage discipline matter more with peroxide than with most liquids we ship.
Industrial Applications
Hydrogen peroxide earns its place in industrial use because it oxidizes strongly and decomposes to water and oxygen, leaving no persistent residue.
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Oxidizing agent: a workhorse oxidizer in chemical processing, driving oxidation reactions where a clean-decomposing reagent is preferred over metal-based oxidants.
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Laboratory reagent: used across analytical chemistry as an oxidizer in digestions, sample preparation, and controlled cleaning workflows — the core reason labs specify the ACS Grade designation.
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Bleaching: applied in textile and pulp operations to bleach fabric and wood pulp without chlorinated byproducts.
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Water treatment: dosed by treatment operators to oxidize contaminants, control odor-causing compounds, and support downstream treatment steps.
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Aerospace: hydrogen peroxide has an established history as a propellant in certain rocket engine designs.
In each case the chemistry is the same: peroxide donates oxygen to the target and breaks down. What changes between applications is dose, contact time, and control — parameters your own process engineering sets, not this page.
Handling & Storage
Treat this product as what its label says it is: Danger (per the product's GHS classification). It may intensify fire as an oxidizer (H272), causes severe skin burns and eye damage (H314), is harmful if swallowed (H302) or inhaled (H332), and may cause respiratory irritation (H335), all per the product's GHS classification. Wear chemical-resistant gloves, goggles, and body protection whenever transferring it, and work with ventilation adequate to keep vapor away from your face.
Keep it away from organic materials, reducing agents, and anything combustible — an oxidizer in contact with the wrong material is a fire pathway, not just a spill. Store cool, dry, and out of direct sunlight in the original vented HDPE packaging or compatible glass. Never return unused material to the container, and never seal peroxide in an unvented vessel: decomposition generates oxygen, and under prolonged heat or fire exposure a closed container can rupture violently. Smaller containers turned over quickly beat one large container aging on a shelf if your usage is intermittent.
Hazmat & Shipping
This product ships as regulated hazardous material. The assignments that govern how we pack and paper it: UN2014 (per 49 CFR 172.101), hazard class 5.1 oxidizer with a subsidiary hazard of class 8 (per 49 CFR 172.101), Packing Group II (per 49 CFR 172.101), under the proper shipping name "Hydrogen peroxide, aqueous solutions with not less than 20 percent but not more than 40 percent hydrogen peroxide (stabilized as necessary)" (per 49 CFR 172.101). Our warehouse team packs it in UN-rated packaging with the required marks and labels before it leaves Taylor, TX. If your receiving dock has hazmat acceptance procedures, have this classification on hand before the freight arrives.
Documentation
A safety data sheet ships with every order, available in English, Spanish, French, and Japanese. A technical data sheet is available for spec review before you buy, and a lot-specific certificate of analysis is available for the material you receive — the document analytical buyers use to verify a lot against their own acceptance criteria. If your quality system requires documentation up front, request it before ordering and we will supply it.
Why Buy from Alliance Chemical
We offer this oxidizer across the full order range — quarts and gallons for laboratory bench use through 55 gallon drums and 275 and 330 gallon totes for production — each packed to its UN2014 / Class 5.1, PG II classification (per 49 CFR 172.101) by a team that handles regulated oxidizers every working day. Alliance Chemical has distributed industrial chemicals since 1998 and has served more than 50,000 customers from our Taylor, Texas warehouse. The shipping and handling guidance on this page is reviewed by Andre Taki, DOT Hazmat Specialist. If you are choosing between concentrations or grades, contact us with your application and we will point you to the right peroxide instead of the biggest order.
