What is the shelf life of sodium hypochlorite 10%?
According to Clorox, undiluted household bleach has a shelf life of six months to one year from the date of manufacture, after which bleach degrades at a rate of 20% each year until totally degraded to salt and water, and a 1:10 bleach solution has a shelf life of 24 hours.
Clorox states that a bottle of bleach that has been correctly stored has a shelf life for about one year. They recommend replacing after one year since sodium hypochlorite begins to break down.
The tissue-dissolving ability of 5.25% sodium hypochlorite remains stable for at least 10 wk.
The tissue-dissolving ability of 2.62% and 1.0% sodium hypochlorite remains relatively stable for 1 wk after mixing, then exhibits a significant decrease in tissue-dissolving ability at 2 wk and beyond.
Sodium hypochlorite does degrade over time. The degradation products are naturally occurring compounds. Sodium hypochlorite stability is adversely affected by increases in storage temperature, low pH, exposure to sunlight and some metals in solution.
Bleach can expire. After a shelf life of six months, bleach starts to degrade. Even in its original bottle, bleach becomes 20 percent less effective as each year goes by. Bleach mixed with water at a 1:9 ratio (i.e. 10 percent bleach) is potent for about a day (it's more unstable in its diluted form).
According to Clorox, undiluted household bleach has a shelf life of six months to one year from the date of manufacture, after which bleach degrades at a rate of 20% each year until totally degraded to salt and water, and a 1:10 bleach solution has a shelf life of 24 hours.
Sodium hypochlorite is best stored for the longest storage life at temperatures around or below 60°F (15°C), when filtered and free of impurities, at dilute concentrations that maintain pH above 10, and without direct sun exposure due to the decomposition effects of ultraviolet radiation and heat.
As many professionals prefer to use a sodium hypochlorite solution with available chlorine concentrations of 4 to 5%, the product can be used for 150 days from the production date.
When properly stored, bleach has a 1-year shelf life. If you don't recall when you bought it, learn how to read the bottle's production code and see if it's time to replace.
What is the shelf life of a 1 10 bleach solution?
According to Clorox, undiluted household bleach has a shelf life of six months to one year from the date of manufacture, after which bleach degrades at a rate of 20% each year until totally degraded to salt and water, and a 1:10 bleach solution has a shelf life of 24 hours.
Due to its naturally derived ingredients, lack of stabilisers and harsh chemicals that extend product life spans, Hypochlorous Acid (HOCl) will expire after 30 days once opened. But it will maintain its effectiveness once bottled for 6 months.

References
- https://www.farmandfleet.com/products/1314289-clorox-77-oz-splash-less-bleach.html
- https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1834-7819.2001.tb00291.x
- https://wonderopolis.org/wonder/how-does-bleach-work
- https://castlechem.com.au/sds/Sodium-Hypochlorite-Stability.pdf
- https://www.oregonmetro.gov/tools-living/healthy-home/common-hazardous-products/bleach
- https://www.sciencedirect.com/science/article/pii/S009923990681040X/pdf?md5=2cd15028d4038034776054abd92bb3b3&pid=1-s2.0-S009923990681040X-main.pdf
- https://mydisposal.com/dispose-old-pool-chemicals
- https://www.uwo.ca/animal-research/doc/bleach-sop.pdf
- https://www.aarp.org/health/conditions-treatments/info-2020/bleach-precautions.html
- https://wspehsu.ucsf.edu/wp-content/uploads/2015/10/FactSheet_Bleach.pdf
- https://30secondscleaners.com/blog/19203627-does-30-seconds-outdoor-cleaner-contain-bleach
- https://www.homedepot.com/p/Clorox-81-oz-Concentrated-Regular-Disinfecting-Liquid-Bleach-Cleaner-4460032263/311934849
- https://liquipak-shoponline.co.uk/products/sodium-hypochlorite-14-15
- https://www.insider.com/guides/health/does-bleach-expire
- https://www.thehealthsite.com/beauty/is-it-safe-for-teenagers-to-bleach-their-skin-beauty-query-t1116-445645/
- https://www.drinkaquagear.com/blogs/news/what-are-the-symptoms-of-too-much-chlorine-in-my-water
- https://boboates.com/4-things-you-should-never-do-to-pipes/
- https://pubmed.ncbi.nlm.nih.gov/7102683/
- https://www.healthline.com/health/bleach-on-skin
- https://www.phta.org/pub/?id=53f7fd64-1866-daac-99fb-101ba70e231d
- https://pubmed.ncbi.nlm.nih.gov/23330511/
- https://crewcare.co.nz/blog/recommended-bleach-use-for-cleaning/
- https://us.davines.com/blogs/news/how-to-rehydrate-your-hair-after-bleaching
- https://www.davita.com/treatment-services/home-dialysis/home-benefits/4-tips-for-preventing-infection-on-home-dialysis
- https://www.scripps.edu/newsandviews/e_20060213/bleach.html
- https://www.quora.com/Can-I-use-bleach-after-letting-it-sit-out-for-a-day-bleach-for-hair
- https://www.apartmenttherapy.com/first-thing-to-do-with-new-bleach-36868382
- https://mycampus.umhb.edu/ICS/icsfs/How_long_does_diluted_bleach_last.docx?target=c707c579-e8b1-42bf-b6ad-48961bc75ea1
- https://www.protank.com/sodium-hypochlorite
- https://discoverplumbingandrooter.com/i-poured-bleach-down-my-drain/
- https://www.cdc.gov/niosh/idlh/7782505.html
- https://eartheclipse.com/science/misc/does-bleach-evaporate.html
- https://www.realsimple.com/home-organizing/cleaning/do-cleaning-products-expire
- https://www.officecrave.com/clorox-bleach-products.html
- https://www.evaprofessional.co.uk/blogs/item/colour-guide-when-to-use-10-20-30-or-40-volume-developer
- https://multimedia.3m.com/mws/media/735976O/disinfection-with-bleach-tech-talk.pdf
- https://www.wikihow.com/Dilute-Bleach
- https://www.softwashing.uk/pages/sodium-hypochlorite-mixing-ratio
- https://www.clorox.com/learn/how-to-dilute-bleach-for-cleaning/
- https://www.clorox.ca/en/how-to/disinfecting-sanitizing/how-why-to-dilute-bleach-for-cleaning-hard-surfaces/
- https://www.quora.com/Can-I-use-hair-bleach-that-has-foamed
- http://fr.esbe.com/Customer/esscin/specpages/CloroxBleach.pdf
- https://www.healthline.com/health/bleach-and-vinegar
- https://journals.asm.org/doi/pdf/10.1128/cmr.10.4.597
- https://www.mrpoolman.com.au/blogs/news/do-pool-chemicals-expire-how-long-can-i-keep-pool-chemicals
- https://www.hardrockconcretecoatings.com/can-you-clean-your-concrete-with-bleach/
- https://burlybands.com/blogs/news/can-you-bleach-wet-hair
- https://pubmed.ncbi.nlm.nih.gov/8289027/
- https://www.cdc.gov/hygiene/cleaning/disinfecting-bleach.html
- https://www.thespruce.com/use-chlorine-bleach-to-create-designs-2145783
- https://www.clorox.com/learn/how-to-tell-when-a-bleach-bottle-was-made/
- https://sugarresearch.com.au/sugar_files/2019/01/Instructions-for-making-bleach-solution_RSD_2019_F.pdf
- https://www.healthline.com/health/does-hair-dye-expire
- https://fmcna.com/content/dam/fmcna/live/support/documents/field-service-bulletins/all-2008-series-hermodialysis-machines/13-FRS-007_Rev_B.pdf
- https://quizlet.com/306631721/cleaning-blood-spill-flash-cards/
- https://www.canr.msu.edu/news/covid-19-disinfecting-with-bleach
- https://www.aad.org/news/eczema-bleach-bath-therapy
- https://www.chemicalproducts.net/product/cleaning/washroom/thick-bleach-concentrate
- https://shop.clorox.com/products/clorox-disinfecting-bleach
- https://www.rd.com/article/yes-bleach-expires-heres-what-you-need-to-know/
- https://www.thekitchn.com/best-ways-to-store-bleach-257766
- https://doh.wa.gov/community-and-environment/contaminants/bleach-mixing-dangers
- https://www.clorox.com/learn/how-to-spot-treat-stains-hand-wash-clothes-with-bleach/
- https://shop.clorox.com/products/clorox-concentrated-bleach-powder
- https://www.cleaninginstitute.org/cleaning-tips/clothes/detergents/using-bleach-laundry
- https://www.verywellhealth.com/make-your-own-disinfectant-solution-998274
- https://www.homedepot.com/p/reviews/Clorox-116-fl-oz-Splash-Less-Regular-Concentrated-Liquid-Bleach-Cleaner-4460030784/206351008/1
- http://www.forp.usp.br/restauradora/soda/sodaingl.html
- https://www.maine.gov/dhhs/mecdc/environmental-health/dwp/fit/documents/CloroxConcentratedDosageGuidance.pdf
- https://www.ccohs.ca/oshanswers/chemicals/bleach.html
- https://www.apartmenttherapy.com/bleach-cleaning-36771547
- https://tyndaleusa.com/blog/2020/03/25/frc-safety-during-covid-19-dried-bleach-residue-and-frc/
- https://www.healthline.com/health/how-long-to-leave-bleach-on-hair
- https://oomyceteworld.net/protocols/bleach_protocol.pdf
- https://www.boascleaningservices.com.au/a-list-of-cleaning-chemicals-you-shouldnt-mix/
- https://www.eurekalert.org/pub_releases/2006-02/asfm-vik021306.php
- https://speedqueen.com/tips-for-using-bleach-in-the-laundry/
- https://www.wellesley.edu/sites/default/files/assets/departments/ehs/files/sop_for_bleach_disinfection.pdf
- https://www.bigbathroomshop.co.uk/info/blog/faqs/is-it-ok-to-pour-bleach-down-a-shower-drain/
- https://www.stylecraze.com/articles/how-long-to-leave-bleach-in-hair/
- http://www.fvfiles.com/524629.pdf
- https://www.cbsnews.com/news/if-its-old-throw-it-out/
- https://nhm.assam.gov.in/sites/default/files/swf_utility_folder/departments/nhm_lipl_in_oid_6/portlet/level_2/illustrative_examples_for_disinfection.pdf
- https://www.pathisol.com/blogs/news/does-hypochlorous-acid-hocl-expire
- https://www.birkocorp.com/resources/blog/the-stability-of-chlorine-bleach-solutions/
- https://www.durham.ca/en/health-and-wellness/resources/Documents/PublicHealthInspectionsandInvestigations/DUHEV460BleachDisinfectant.pdf
- https://www.quora.com/Is-concentrated-bleach-the-same-as-regular-bleach
- https://www.thezoereport.com/p/does-bleach-expire-experts-sound-off-on-the-shelf-life-of-this-mvp-cleaner-22808559
- https://www.ipswichma.gov/DocumentCenter/View/10072/50ppm-Guidelines-on-the-Use-of-Disinfectants
- https://www.cdc.gov/healthywater/swimming/aquatics-professionals/cleaning-body-fluid-spills.html
- https://www.rjschinner.com/blog/literature/RJ%20Literature/BleachShelfLife_RJS.pdf
- https://www.thedonutwhole.com/can-you-use-out-of-date-chlorine/
- https://www.goodhousekeeping.com/uk/house-and-home/household-advice/a683420/the-one-mistake-youre-making-with-bleach/
- https://quizlet.com/317838561/chapter-9-examination-and-treatment-area-flash-cards/
- https://www.thedonutwhole.com/can-hair-dye-developer-go-bad/
- https://www.rjschinner.com/blog/literature/clorox/NI-21593_AFH_CBI_GrmcdlBle_Brochure_cln.pdf
- https://www.bobvila.com/articles/does-bleach-expire/
- https://www.clorox.com/learn/difference-between-chlorine-and-non-chlorine-bleach/
- https://www.differencebetween.com/difference-between-bleach-and-disinfectant/
- https://sheltermedicine.vetmed.ufl.edu/files/2011/10/Guidelines-for-Using-Bleach-updated.pdf
- https://saniwash.com/bleach-has-a-shelf-life/
- https://www.epa.gov/ground-water-and-drinking-water/emergency-disinfection-drinking-water
- https://davidson.weizmann.ac.il/en/online/askexpert/chemistry/why-does-my-skin-turn-smooth-after-i-touch-household-bleach-orit-0
- https://www.usatoday.com/story/news/factcheck/2020/06/10/fact-check-does-clorox-splash-less-bleach-formula-disinfect/3169980001/
- https://www.cloroxpro.com/products/clorox/germicidal-bleach/
- https://www.allfloridapaper.com/fact-or-fiction-what-you-need-to-know-about-bleach/
- https://www.ethicalshift.com/recycle/disposing/health-&-beauty/how-to-dispose-of-hair-bleach/
- https://www.wikihow.com/Dispose-of-Bleach
- https://www.pvcfittingsonline.com/resource-center/is-bleach-safe-to-use-on-pvc-piping/
- https://doh.wa.gov/sites/default/files/legacy/Documents/8340//970-216-Disinfect-en-L.pdf