Shelf Life of Common Household Chemicals
You can tell when milk is bad and you probably have an idea of when to throw out the mayo in your fridge, but you may be unaware of the shelf life of other common household chemicals. For example, did you know hydrogen peroxide is only good for about a month once you've opened it? Gas which contains ethanol is at its best for only a few weeks
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. Expiration Dates for Common Chemicals Chemical Expiration Date air freshener spray 2 years antifreeze, mixed 1 to 5 years antifreeze, concentrated indefintely baking powder unopened, indefinitely if properly stored opened, test by mixing with water baking soda unopened, indefinitely if properly stored opened, 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 days in your gas tank, about a month (2-6 weeks) honey indefinitely hydrogen peroxide unopened, at least one year opened, 30-45 days laundry detergent, liquid or powder unopened, 9 months to 1 year opened, 6 months metal polish (copper, brass, silver) at least 3 years Miracle Gro, liquid unopened, indefinitely opened, 3 to 8 years motor oil unopened, 2 to 5 years opened, 3 months Mr. Clean 2 years paint unopened, up to 10 years opened, 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
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. Expiration Dates for Common Chemicals Chemical Expiration Date air freshener spray 2 years antifreeze, mixed 1 to 5 years antifreeze, concentrated indefintely baking powder unopened, indefinitely if properly stored opened, test by mixing with water baking soda unopened, indefinitely if properly stored opened, 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 days in your gas tank, about a month (2-6 weeks) honey indefinitely hydrogen peroxide unopened, at least one year opened, 30-45 days laundry detergent, liquid or powder unopened, 9 months to 1 year opened, 6 months metal polish (copper, brass, silver) at least 3 years Miracle Gro, liquid unopened, indefinitely opened, 3 to 8 years motor oil unopened, 2 to 5 years opened, 3 months Mr. Clean 2 years paint unopened, up to 10 years opened, 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
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