70% Alcohol Solution Recipe using 190 Proof (95% ABV) Food Grade Ethanol
Alcohol surface sprays can be useful for cleaning routines when they are mixed, labeled, stored, and used correctly. This recipe explains how to make a 72% alcohol surface spray using Culinary Solvent’s 190 Proof Food Grade Ethanol and water.
This recipe is for hard, nonporous surfaces only. It is not a hand sanitizer recipe, and it should not be used on skin, pets, food, wounds, toys that may be mouthed by children, or surfaces that are not compatible with alcohol.
70% Alcohol Solution Recipe Using 190 Proof Ethanol
Recipe: 72% Alcohol Surface Spray Using 95% Ethyl Alcohol
This recipe starts with 190 proof ethanol, also known as 95% ethyl alcohol. Mixing 8 fl oz of 190 proof ethanol with 2.5 fl oz of water creates 10.5 fl oz of finished alcohol surface spray at approximately 72.4% alcohol by volume, commonly rounded to 72%.
The most important part of this recipe is accurate measuring. If too much water is added, the finished alcohol percentage will be lower than intended. Do not guess or “eyeball” the recipe.
Before You Start
Clean first, then apply alcohol surface spray. Alcohol works best on surfaces that are already free of visible dirt, grease, dust, and grime. If a surface is visibly dirty, clean it first with soap and water or a surface-safe cleaner before applying the alcohol solution.
Alcohol is flammable. Mix, store, and use this spray away from flames, sparks, pilot lights, cigarettes, candles, hot surfaces, and other ignition sources. Use in a well-ventilated area and allow treated surfaces to dry fully before using appliances, electronics, or anything that may create heat or sparks.
Do not mix alcohol with bleach, ammonia, vinegar, hydrogen peroxide, commercial cleaners, or other disinfectants. Mixing cleaning chemicals can create dangerous fumes or reduce product effectiveness.
Alcohol may damage some surfaces, including certain plastics, acrylic, painted finishes, finished wood, leather, natural stone, electronics, and coated screens. Test a small hidden area first and follow the surface manufacturer’s cleaning instructions when available.
Ingredients
- 8 fl oz 190 Proof Food Grade Ethanol, 95% alcohol by volume (Buy 95% Ethyl Alcohol Here)
- 2.5 fl oz clean water
Step-by-Step Instructions
Step 1: Add 8 fl oz of 190 Proof Food Grade Ethanol to a clean spray bottle or clean mixing container.
Step 2: Add 2.5 fl oz of clean water.
Step 3: Close the container and shake gently to combine.
Step 4: Label the bottle clearly as “72% Alcohol Surface Spray.” Include the date made and the word “Flammable.”
Congratulations!
Your 72% alcohol surface spray is finished and ready to use on compatible hard, nonporous surfaces.
How the Alcohol Percentage Is Calculated
The basic calculation is:
Pure alcohol volume ÷ total batch volume × 100 = final alcohol percentage
For this recipe:
8 fl oz × 95% = 7.6 fl oz pure alcohol
7.6 fl oz pure alcohol ÷ 10.5 fl oz total batch × 100 = 72.4%
This is commonly rounded to 72% alcohol by volume. If extra water or other ingredients are added, the final alcohol percentage will be lower.
How to Use Alcohol Surface Spray
Spray the clean, hard, nonporous surface until it is visibly wet. Allow the surface to remain wet before wiping or letting it air dry. If the surface dries too quickly, reapply more solution so the surface stays wet long enough for proper contact time.
Do not spray into the air. Do not use as a room spray, body spray, linen spray, hand sanitizer, or food-contact sanitizer unless you are following the rules and instructions that apply to that specific use.
Do not spray directly into electronics, outlets, switches, appliances, or open flames. If cleaning electronics, follow the device manufacturer’s cleaning instructions.
Storage and Shelf Life
Store finished alcohol spray in a tightly sealed container away from heat, flames, sparks, and direct sunlight. Keep the bottle closed when not in use. Alcohol can evaporate if the bottle is left open, and evaporation may lower the alcohol concentration over time.
Because this recipe finishes close to 70%, avoid leaving the bottle uncapped. If the bottle has been left open, stored near heat, contaminated, or is no longer clearly labeled, discard it safely and make a fresh batch.
Can This Recipe Be Sold or Distributed?
This recipe is intended for small personal-use batches only. Disinfectants sold or distributed in the United States may be regulated by the EPA and must meet applicable labeling, registration, and use-direction requirements. Do not use this home recipe for commercial manufacturing, resale, public distribution, or regulated disinfectant claims.
Why the Alcohol Proof Matters
Alcohol proof changes the recipe math. A recipe written for 200 proof ethanol will not produce the same final alcohol percentage when made with 190 proof ethanol. This recipe accounts for the water already present in 190 proof alcohol so the finished surface spray remains above 70% alcohol when measured accurately.
Why Use Culinary Solvent 190 Proof Food Grade Ethanol?
Culinary Solvent’s 190 Proof Food Grade Ethanol is 95% ethyl alcohol. Because this alcohol already contains some water, the recipe requires less added water than a recipe made with 200 proof ethanol.
Accurate measuring still matters. Always measure by volume using clean measuring tools, and do not dilute the recipe beyond the amounts listed above.
