91% Isopropyl Alcohol
91% isopropyl alcohol in Lab Grade and Kosher/Halal-certified USP Grade, in stock and ready to ship.
91% is the concentration nobody talks about, but plenty of people buy. It dries faster than 70% and costs less than climbing all the way to 99%, so if your job doesn't actually need either extreme, this is probably what you want.
Lab Alley stocks 91% in Lab Grade and USP Grade, both in stock and priced online, no quote call required. USP Grade carries Kosher and Halal certification, and both grades ship with SDS and COA. Running QWISO extractions, wiping down electronics, or just want something that dries quicker than the 70% under your sink? This is the one.
256,000+
customers served
99.5%
of orders ship in 1–2 business days
98.9%
inventory accuracy
SDS + COA
available online, every product
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91% Isopropyl Alcohol - 1 products About 91% Isopropyl Alcohol
91% isopropyl alcohol is isopropanol (C3H8O) cut with about 9% water. That small amount of water does real work: it slows evaporation just enough to help the alcohol wet a surface, which is a big part of why extractors reach for 91% over anhydrous IPA when running QWISO (quick wash isopropyl) batches. Otherwise it behaves like any isopropyl alcohol: colorless, volatile, a Class IB flammable liquid with a flashpoint around 12°C (53°F).
COMMON APPLICATIONS
People use 91% IPA as a disinfectant, a reagent, a cleaner for electronics and lab gear, and a solvent for QWISO extractions.
GRADES EXPLAINED
Lab Grade gets the job done for cleaning, disinfecting, and extraction, but nobody's testing it against a pharmacopeial standard, so keep it away from anything drug or device related. USP Grade is tested to that standard and carries Kosher and Halal certification, so reach for it when the end product needs paperwork behind it.
TYPES & GRADES AT A GLANCE
Is the general purpose pick for cleaning, disinfecting, and extraction.
Meets pharmacopeial purity standards and carries both Kosher and Halal certification, good for personal care and pharmaceutical work.
WHY BUY FROM LAB ALLEY
256,000+ customers already order their chemicals from Lab Alley.
99.5% of orders ship within 1 to 2 business days, so a 91% isopropyl alcohol order doesn't stall your production or research schedule.
98.9% inventory accuracy means the grade you see in stock is the grade that ships.
SDS and COA are available online for every isopropyl alcohol grade, and our USP Grade 91% is Kosher and Halal certified.
Frequently Asked Questions
Lab Grade vs. USP Grade, what's the real difference?
Lab Grade works fine for cleaning, disinfecting, and extraction, anything where nobody's checking a certificate. USP Grade is tested against the United States Pharmacopeia and carries Kosher and Halal certification, so it's the one to buy when your product needs to prove something.
Why 91% instead of 70% or 99%?
Because it splits the difference. Faster drying and less water than 70%, cheaper and easier to find in bulk than 99%. If you're disinfecting a surface, 70% still does that job better. Need zero water content? Go 99%. 91% covers everything in between, extraction included.
Do I need a permit for this?
No. IPA was never a beverage-alcohol product, so there's no TTB permit or paperwork chase at either grade.
Can it ship to my house?
No. Same as our other flammable chemicals, this ships to businesses, schools, universities, and labs only. Use a home address at checkout and we'll just pull it from your order before it ships, so save yourself the hassle and use a work address instead.
QWISO or general cleaning, which grade?
Lab Grade if cost matters more than a certificate; extraction and cleaning both work fine on it. USP Grade if the end product touches skin or needs Kosher or Halal behind it.
How does 91% stack up against 99% for electronics?
99% and 99.8% dry faster and leave less behind, which is why they're the safer bet on circuit boards. 91% will clean electronics fine too, just expect a touch more residue and a slower dry.
Drums, totes, is bulk an option?
Yes. Both grades ship in 55-gallon drums, and Lab Grade also comes in a 270-gallon tote. Bulk & Custom Chemicals handles volume pricing.
Guides & Resources
Isopropanol (Isopropyl Alcohol) Overview
Discover the key properties and uses of isopropanol. Understand how this organic solvent supports food, cosmetic, and pharmaceutical production with safe handling practices.
Read article →Types of Isopropanol
What are the different types of isopropanol? Learn the differences between food, cosmetic, and pharmaceutical grades, plus their key applications.
Read article →How to Store Isopropanol
Learn how to safely store isopropanol. Discover best practices for storage, handling, and labeling to maintain quality, prevent contamination, and ensure compliance.
Read article →Shelf Life & Expiration of Isopropanol
Learn the shelf life and expiration signs of isopropanol. Understand storage conditions, moisture sensitivity, and how to extend stability for food, pharma, and industrial uses.
Read article → Industries That Use 91% Isopropyl Alcohol
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Learn more → If you are purchasing SDA in 5 gallons or more, you are required to provide a TTB permit showing how much of the product you are allowed to purchase per year. Please email your TTB permit to
customercare@laballey and include your Order Number.
