Chemical laboratory

Isopropyl Alcohol

High-Purity Solvent and Disinfectant for Industrial Applications

  • CAS 67-63-0
  • Formula C₃H₈O
  • Flash Pt 12 °C
  • Density 0.785 g/cm³

Physical & Chemical Properties

Property Value Unit
Boiling point 82.6 °C °C
Flash point 12 °C °C
Density 0.785 g/cm³ g/cm³
Solubility Miscible with water -
Ph N/A -
Molecular weight 60.10 g/mol g/mol
Melting point -89.5 °C °C
Vapor pressure 43 mmHg at 20°C mmHg
Autoignition temp 399 °C -
Appearance Clear, colorless liquid -
Odor Slight alcohol odor -
Vapor density 2.07 (air = 1) g/cm³

Overview

Isopropyl alcohol (IPA), also known as 2-propanol or isopropanol, is a versatile organic compound with the molecular formula C₃H₈O. This clear, colorless liquid with a slight alcohol odor serves as one of the most widely used solvents and disinfectants in industrial, laboratory, and commercial applications. With its excellent solvent properties, rapid evaporation rate, and antimicrobial effectiveness, isopropyl alcohol has become an essential chemical for manufacturers, laboratories, and facilities requiring reliable cleaning and degreasing solutions.

Key Applications

Isopropyl alcohol excels as an industrial solvent for cleaning electronic components, precision instruments, and optical equipment due to its ability to dissolve oils, resins, and other organic compounds while leaving no residue upon evaporation. Its antimicrobial properties make it highly effective as a disinfectant for sanitizing surfaces, equipment, and tools in healthcare, pharmaceutical, and food processing environments. In laboratory settings, IPA serves as a crucial reagent for extractions, sample preparation, and general cleaning of glassware and instruments. Additionally, it functions as a chemical intermediate in the production of acetone, glycerol, and various esters, while also serving as an effective de-icing agent for automotive and aviation applications.

Safety & Handling

Isopropyl alcohol has a flash point of 12°C, making it a flammable liquid that requires careful handling and storage away from ignition sources. Workers should wear appropriate personal protective equipment including safety goggles, chemical-resistant gloves, and protective clothing when handling IPA. Ensure adequate ventilation in work areas to prevent vapor accumulation, as the vapor density of 2.07 means IPA vapors are heavier than air and can settle in low-lying areas. The autoignition temperature of 399°C provides guidance for safe heating operations, but always maintain temperatures well below this threshold.

Storage & Shelf Life

Store isopropyl alcohol in tightly sealed containers made of compatible materials such as stainless steel, aluminum, or certain plastics in cool, dry, well-ventilated areas away from heat sources and direct sunlight. Maintain storage temperatures below 25°C to minimize evaporation and maintain product integrity. Keep IPA away from strong oxidizing agents, acids, and alkaline materials to prevent unwanted reactions. When stored properly in original containers, isopropyl alcohol maintains its quality indefinitely, though regular quality checks are recommended for critical applications.

Why Alliance Chemical

Alliance Chemical provides high-quality Isopropyl Alcohol with same-day shipping from our Taylor, Texas facility to customers throughout the region. We offer flexible delivery options including UPS for smaller quantities, LTL for medium orders, and FTL for bulk shipments, ensuring you receive your chemical supplies when you need them. Every order includes comprehensive Safety Data Sheets (SDS) and Certificates of Analysis (COA) to support your regulatory compliance and quality assurance programs, giving you confidence in product consistency and purity.

Shipping & Availability

Parcel Shipping

UPS Ground supports pints, quarts, and most 1-gallon packages nationwide.

LTL Freight

5-gallon pails, drums, and totes move via LTL carriers such as ABF Freight, SEFL, Saia, and XPO.

Full Truckload

FTL available for palletized bulk orders. Competitive freight rates.

Local Pickup

Same-day pickup at our Taylor, TX warehouse for Texas customers.

SDS, COA, and TDS available for every product • Same-day shipping on orders before 1 PM CT

Frequently Asked Questions

What is isopropyl alcohol (IPA) and what is it used for?
Isopropyl alcohol (CAS 67-63-0, formula C3H8O) is a volatile, flammable solvent commonly used in industrial and laboratory settings. Typical uses include solvent cleaning, degreasing, surface preparation, reagent dilution and instrument maintenance.
How should I store 91% isopropyl alcohol and what is its shelf life?
Store in a cool, dry, well-ventilated area away from heat, sparks and open flames in tightly closed, grounded containers. When kept sealed under recommended conditions, 91% IPA is generally stable for 1–2 years; long-term storage may lead to evaporation or slight composition changes.
What safety precautions should I follow when handling isopropyl alcohol?
Handle IPA as a flammable liquid: use explosion-proof equipment, keep sources of ignition away, and ensure adequate ventilation. Wear appropriate PPE (gloves, eye protection) and avoid prolonged skin contact or inhalation; follow the product SDS for detailed emergency measures.
How does 91% isopropyl alcohol differ from other concentrations like 70%?
Higher concentrations (91%) contain less water and provide stronger solvent power and faster drying, making them preferred for cleaning and certain lab processes. Lower concentrations (e.g., 70%) contain more water and evaporate more slowly, which can be desirable for some applications that require slower evaporation or better wetting.
What documentation is available for isopropyl alcohol?
We provide Safety Data Sheets (SDS), Certificates of Analysis (COA), and Technical Data Sheets (TDS) upon request to document composition, physical properties and test results. Additional regulatory documents and bespoke quality reports can often be supplied for bulk orders.
How is isopropyl alcohol shipped and what packaging options are available?
IPA is regulated as a flammable liquid (UN 1219, Class 3) and must be shipped per local and international dangerous goods rules (IATA/IMDG/49 CFR). Common packaging options include 1 L bottles, 5–25 L pails, 200 L drums and 1000 L IBCs with appropriate grounding and labeling.
What materials is isopropyl alcohol compatible with and which should be avoided?
IPA is compatible with glass, stainless steel, polyethylene, polypropylene and PTFE in normal use. It can attack or craze some plastics (e.g., polycarbonate, certain acrylics) and may affect some elastomers, so perform compatibility testing on sensitive materials before use.
What are the key technical specifications for 91% isopropyl alcohol?
Typical specifications for 91% IPA include nominal purity 91% v/v, CAS 67-63-0, density ~0.785 g/mL at 20°C, boiling point ~82.6°C and closed-cup flash point ≈12°C. Exact values and impurity limits are provided on the product COA.
Which industries and laboratory applications commonly use 91% isopropyl alcohol?
Industries using 91% IPA include electronics manufacturing, automotive, coatings, pharmaceuticals (non-medicinal processes) and analytical laboratories for cleaning, degreasing, sample prep and solvent rinsing. It is widely used wherever a fast-evaporating organic solvent is required.
How can I purchase 91% isopropyl alcohol and is it readily available?
91% IPA is commonly stocked by chemical suppliers and distributors in a range of packaging sizes; lead times are typically short for standard quantities. For bulk or regulated uses, contact suppliers for pricing, minimum order quantities, regulatory paperwork and delivery options.

Documentation & Downloads

Ready to Purchase?

SDS & COA included • Same-day shipping • No minimum order

Shop Isopropyl Alcohol