Reagent Alcohol 200 Proof
The laboratory-standard reagent alcohol blend — approximately 90% ethanol, 5% methanol, and 5% isopropyl alcohol on an low-water basis — built on Pristine ultrapure ethanol. Consistent, tax-free, and produced on 100% stainless steel equipment for the lot-to-lot reliability laboratories demand.
What Is Reagent Alcohol?
Reagent alcohol is the standard laboratory ethanol blend: roughly 90 parts ethanol, 5 parts methanol, and 5 parts isopropyl alcohol. The added alcohols denature the ethanol — so it ships free of federal excise tax — while leaving its solvent behavior essentially identical to pure ethanol for most laboratory protocols.
Our 200 proof reagent alcohol is blended on a 200 proof basis with less than 0.5% water, giving laboratories a very low water reagent for moisture-sensitive protocols, and dilutions to 95%, 70%, or any working strength are made with confidence because you start from a known, water-free baseline.
Applications
🔬 Histology & Pathology
Tissue processing, dehydration series, and staining protocols in clinical and research histology labs.
⚗ Chromatography
Mobile phase preparation and sample prep where consistent, dry alcohol composition matters.
🧬 Molecular Biology
DNA/RNA precipitation and washing steps calling for high-purity ethanol-based reagent.
🧪 General Laboratory
Everyday lab solvent for cleaning, extraction, dilution, and reagent preparation.
Purchasing & Compliance
Because reagent alcohol is denatured, it ships exempt from federal excise tax, and most laboratory buyers can purchase it without a TTB industrial alcohol user permit. Our team confirms requirements for your specific use and volume, and handles all documentation from our TTB-permitted facility.
Frequently Asked Questions
What is the difference between reagent alcohol and pure 200 proof ethanol?
Reagent alcohol contains about 5% methanol and 5% isopropyl alcohol as denaturants, making it tax-exempt and easier to purchase. Pure (non-denatured) 200 proof ethanol contains only ethanol but carries federal excise tax and stricter controls.
Is reagent alcohol suitable for histology?
Yes. Reagent alcohol is the standard choice for tissue processing, dehydration series, and staining in histology and pathology laboratories.
Do I need a TTB permit to buy reagent alcohol?
In most cases, no. Reagent alcohol is denatured, so most laboratory purchasers do not need a TTB industrial alcohol user permit. Contact us to confirm requirements for your use case.
Can I dilute 200 proof reagent alcohol to 95% or 70%?
Yes. Starting from a sub-0.5% water baseline lets labs prepare exact working strengths with lab-grade water, rather than guessing at the water already present in the reagent.
Launching soon — request a quote now to reserve first-production allocation.