Science, Tech, Math › Science Expiration Dates for Household Chemicals Share Flipboard Email Print Jody Dole / Getty Images Science Chemistry Chemistry In Everyday Life Basics Chemical Laws Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated February 28, 2020 Some common everyday chemicals last indefinitely, but others have a shelf life. This is a table of expiration dates for several household chemicals. In some cases, the chemicals have a shelf life because the product accumulates bacteria or breaks down into other chemicals, rendering it ineffective or potentially dangerous. In other cases, the expiration date is related to diminished effectiveness over time. One interesting chemical on the list is gasoline. It's really only good for about 3 months, plus the formulation may change depending on the season. Expiration Dates for Common Chemicals Chemical Expiration Date air freshener spray 2 years antifreeze, mixed 1 to 5 years antifreeze, concentrated indefinitely baking powder unopened, indefinitely if properly storedopened, test by mixing with water baking soda unopened, indefinitely if properly storedopened, test by mixing with vinegar batteries, alkaline 7 years batteries, lithium 10 years bath gel 3 years bath oil 1 year bleach 3 to 6 months conditioner 2 to 3 years dish detergent, liquid or powder 1 year fire extinguisher, rechargeable service or replace every 6 years fire extinguisher, nonrechargeable 12 years furniture polish 2 years gasoline, no ethanol several years, if properly stored gasoline, with ethanol from date of manufacture, 90 daysin your gas tank, about a month (2-6 weeks) honey indefinitely hydrogen peroxide unopened, at least one yearopened, 30-45 days laundry detergent, liquid or powder unopened, 9 months to 1 yearopened, 6 months metal polish (copper, brass, silver) at least 3 years Miracle-Gro, liquid unopened, indefinitelyopened, 3 to 8 years motor oil unopened, 2 to 5 yearsopened, 3 months Mr. Clean 2 years paint unopened, up to 10 yearsopened, 2 to 5 years soap, bar 18 months to 3 years spray paint 2 to 3 years vinegar 3-1/2 years Windex 2 years Does Alcohol Go Bad? Make Ammonium Nitrate from Household Chemicals Examples of Chemical Reactions in Everyday Life Baking Powder Shelf Life Chemicals You Should Never Mix Is It Ever Safe to Drink Bleach? Bleach Facts (Answers to Common Questions) Chemical Additives in Foods You Eat How to Test Baking Powder and Baking Soda for Freshness What Is Cream of Tartar or Potassium Bitartrate? Hydrogen Peroxide Shelf Life Chlorine Bleach Shelf Life Does Bottled Water Go Bad? The Difference Between Baking Soda and Baking Powder Thames & Kosmos Chem 3000 Chemistry Kit Review What Is Evergreen Content?