PhilGeis
Forum Replies Created
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You can try it
I agree - prefer parabens (0.2 methyl/0.1 propyl)/ -
try 100 ppm but you need to get it into the product - pretty insoluble.
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Name is not consistent with structure. Structure appears to be didodecyl benzene disulfonate sodium salt and I doubt it would be a simple product of combination.
There is an anionic surfactant dodecyl benzene sulfonate sodium salt used as a commercial detergent - OSHA hazardous and a substantial irritant you’d not use in cosmetics. https://www.fishersci.com/store/msds?partNumber=AC325910050&productDescription=DODECYLBENZENESULFONIC+A+5KG&vendorId=VN00032119&countryCode=US&language=enThink the one you questioned would be worse.
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Generally true for shampoo - cream/lotion susceptible to both.
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Should be OK - think finished product levels
>5000 ppm benzyl alcohol and >2000 ppm each acid in solution.
PET - look for 7 day kill. -
Formaldehyde labeling would be required for formalin and in many countries and EU for formaldehyde releaser.
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Right - with the timing but I’d rinse right after sanitizing so it doesn’t screw up your paint etc. - then apply 6-12 hour limit.
Plastic/paint will be your on going risk.
Process water - turn off the tap. -
What will be product(s) pH?
K903 has some efficacy - tho’ supplier’s “extremely effective is BS.
forget Neodefend.
Don’t count on Benozate alone - don’t know what theory justifies but that’s prob. irresponsible.
If not freshly prepared - 6-12 hours - or frozen and thawed, the extracts are a big micro risk and need preservation - K sorbate needs pH adjustment and is pretty weak. -
6.5 is better - 7 is ok. NOT lower than 6 - it’ll evolve chlorine gas and that is a very bad health risk. 20-30 minutes - recirculate if you can. Commercial liquid bleach is usually ~ 5%.
you can buy test strips on Amazon
Water - you need to rinse out the stuff with water no worse than process water - NOT tap water. Start production - fill with product no more than 6 hours after sanitization.
What is composition of your system? Stainless steel? PVC? Y
Clean it before you attempt to sanitize.
You should wear eye protection.
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100 ppm available chlorine pH ~6.5 BUT NO Lower than 6 is a good sanitizer. Rinse with process water.
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better idea
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Under stand the preservative combination but have no experience or data for the minimal CMIT level.
For sanitization - what about hypochlorite?
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Sorry - my comment before was in ref to both at effective levels. +
Why not sanitize? Preservation - even pumped up - fails to poor hygiene. Can you describe your sanitization challenges more specifically.
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What’s pH?
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Time might beat kinetics but I wouldn’t. It’s instable in water solution . Think your wasting your time with the tiny but of the stuff.
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Would not use isothiazolinones in leave on products - sensitization/ risk much more so than phenoxy of DMDM Hydantoin.
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Hard to separate indie brand BS from its occasional innovation. They’re primarily formulated around a “hero” ingredient (and “aluminum-free” claim) rather than practical efficacy.
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Why <1 ppm? Lonza doesn’t offer any data. This could be marketing BS like so many of the preservative combinations offered as broad spectrum across wide pH range and formulations.
Don’t know the answer. Stuff is so soluble - maybe you could test with semi quant agar diffusion. -
chemicalmatt said:That is really low Aw, so if you use any preservative at all it wouldn’t need much. Dr. Phil?
Saw this one and agree - risk should be low. Needs Aw measured and know that’s not av or accessed by most folks. Would be real interesting to see effect of the two moderator ingredients.
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Help to describe product and package.
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Couldn’t find it - but should be on its MSDS.
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Hydrosols like essential oils can differ profoundly from batch to batch.
No way has your supplier determined specific components essential for effective preservation - much less ensure each batch is so composed. -
amitvedakar said:DMDM hydantoin in shampoo. Does not cause scalp irritation??MCIT/MIT +Phenoxyethanol. not enough? @PhilGeis
No.
With MCIT (at 5ppm) - you don’t need phenoxyethanol. Of these, phenoxyethanol would be the least preferred.
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Ask Lonza #’s 1 and 2
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Typically is stable in surfactant solution. Water solution is the problem.