Dating vintage glass Clorox bottles (1929–1962) relies on specific embossing, lettering styles, closures, and textures.
Clorox bleach does not have a traditional printed expiration date. Instead, bottles are stamped with a production "Julian code" (e.g., A92010007) usually found on the bottle's neck or near the bottom. Bleach retains its full effectiveness for one year from its manufacturing date.
Clorox officially phased out its iconic amber glass bottles in favor of lightweight plastic jugs in 1962. The company began its transition to plastic packaging in 1960 and executed a full national rollout by 1961, making 1962 the final year Clorox was sold in glass.
To find the manufacturing year of a bottle, look for laser-printed codes on the bottom or neck, or embossed numbers on the glass base. The exact method depends on whether it is a modern packaged product or an antique glass bottle.
Bleach bottles are not stamped with expiration dates because if the product isn't properly stored, an expiration date won't be accurate. Instead, each bleach bottle is stamped with a production code that includes the Julian date from when the bottle was made.
The earliest Clorox bottles had cork-style rubber stoppers and smooth necks and were used until 1940. In 1940 Clorox began using a screw cap, so if there are threads on the neck, the bottle dates from after 1940. In 1958 and 1959, Clorox had a flared neck style with straight edges, which was softened from 1959-1962.
Coded expiration or production dates use letters, numbers, or a combination of both to represent manufacturing or expiration dates. The most common systems require you to look at the number of digits and first character to understand the code.
For instant antique and vintage glass identification, try visual analysis apps like Collector's Lens or AntiqueGlass (Glass Identifier). These use your phone's camera to match bottle shapes, colors, and maker's marks, and are available on both the Apple App Store and the Google Play Store.
Base of the Bottle Markings
In most cases, one- or two-digit numbers are actually mold numbers that indicate the specific bottle mold or section in an automatic bottle machine.
Brown glass (amber) Clorox bottles were produced from 1918 to the early 1960s before transitioning to plastic. You can pinpoint the exact decade using the bottle's closures, embossing style, and markings.
No, 5-year-old bleach is no longer good for disinfecting, sanitizing, or bleaching. Bleach degrades rapidly over time. After 6 to 12 months, it loses its potency and breaks down into ordinary salt and water, rendering it largely useless for most laundry and germ-killing tasks.
The title of the most expensive bottle heavily depends on whether you mean the glass vessel itself or the luxury packaging it comes in. These ultra-luxury bottles derive their record-breaking prices from precious metals and rare gemstones.
Unopened Clorox bleach has a shelf life of exactly 1 year from the date of manufacture. Once opened, or after the one-year mark has passed, it degrades by about 20% each year, quickly losing its ability to effectively disinfect.
NEVER mix chlorine bleach with ammonia or acidic products, such as drain cleaners, toilet bowl cleaners, or metal cleaners, because it will release toxic fumes strong enough to be fatal. Any left- over bleach can be flushed down the toilet or washed down a drain followed with plenty of water.
It does not turn toxic after its expiration date—but it does become less effective, so you can't count on it to sanitize items like water bottles or door knobs. But “while you can't use expired bleach for sanitizing or disinfecting, you can use it for basic cleaning tasks, like cleaning toilets,” says Gagliardi.
To find out how old your bottle is, look for the manufacturer's code or year usually printed on the bottom. Most modern glass and liquor bottles mold the year into the glass in a 2-digit format. However, the method depends entirely on the type of bottle you have.
Yes, there are several completely free apps to identify items. The best all-around option is Google Lens, which is built into most Android phones and available as a free app for iPhone.
You can identify antiques for free by utilizing visual search tools like Google Lens, which instantly matches your photos to similar items online. For deeper historical details, maker information, and estimated market values, dedicated AI-powered mobile apps like Curio or Antique Identifier offer free tiers and introductory scans.
To determine if your old bottles have value, examine them for specific clues like embossing, labels, colors, and manufacturing seams. Then, compare your findings to verified collector databases to gauge their true market worth.
To date a bottle, inspect its base and seams. Look for a two-digit year code stamped into the glass, and check if the vertical mold seams stop at the neck (pre-1910) or run over the top lip (post-1910).
The stamp/code on the back of the bottle will help determine the date it was manufactured. For example: 16264-87649-2233. This bottle based on the code was made on the 264th day of the year 2016.
To check an expiry date, look for the "EXP," "Best By," or "Use By" stamp printed directly on the product's packaging. The format typically follows month/day/year (MMDDYY). Because date labels vary heavily by product type, use these methods to identify them:
The 2-2-2 food rule is a simple guideline for managing leftovers safely and reducing food waste:
To find a car's manufacturing year, check the driver's door jamb sticker for an exact month and year (e.g., 03/24). Alternatively, decode the 10th digit of your VIN or run a check using the NHTSA VIN Decoder.