Members Directory - Chemists Corner

PhilGeis

Member

October 10, 2024 at 6:36 am in reply to: Some floor cleaner samples are milky white while others are not.

prob not preservation as ketchito suggests.

BD55 is DMDM Hydantoin - a formaldehyde releaser that should be good enough -limited activity vs fungi esp. mold is prob covered with surfactant. However , it should only be used in cosmetics. Household cleaners are regulated by EPA. If you’re in US, you need Arxada’s EPA registered version of DMDM Hydantoin - Dantogard.

PhilGeis

Member

October 9, 2024 at 10:17 am in reply to: Formulating eco-friendly plant-based surfactants dishwash gel & powder

A simple search on Amazon will find plenty of dishwash “soap” products based on surfactants with eco-friendly/natural. enviro positioning - with and without sulfate.

e.g. Puracy line https://www.amazon.com/Puracy-Natural-Sulfate-Free-Dishwashing-Detergent/dp/B00HAPEXLK

its surfactant system - Lauryl/Myristyl Glucoside (Coconut Oil-Based Cleanser), Cocamidopropyl Hydroxysultaine (Coconut-Based Cleanser), Sodium Lauroamphoacetate (Coconut Oil-Based Cleanser), Lauramine Oxide (Coconut-Based Cleanser),

You’ll have a very difficult time finding on Amazon or google one based on true soap - metallic salt of a fatty acid such as that from saponification of plant oils.

True soap was the basis for surfactant products (shampoos, dish and clothes wash products) until mid 20th century consumer switched en masse to then new synthetic surfactant products (Dreft for dishwasher - Dopal, Drell, Tide for other apps) based on absence of soap scum and reduced irritancy in use.

https://homegeargeek.com/who-invented-dishwashing-liquid/

and

https://en.wikipedia.org/wiki/Dishwashing_liquid

This reply was modified 10 months, 2 weeks ago by PhilGeis.

PhilGeis

Member

October 7, 2024 at 10:43 am in reply to: Formulating eco-friendly plant-based surfactants dishwash gel & powder

Liquid. Assume hand dishwash?

eco-friendly is meaningless, you can say that about +/- anything. plant based - you could use plant based SLS Na lauryl sulfate. phosphate free - you’d have a difficult time finding a liquid hand dishwash product with phosphate.

Sulfate free - you can true some glucosides - decy l - amine oxides, etc. or a true soap-based product as Mike mentioned. For true soap, your consumer will have to deal with soap scum - esp. those consumers with hard water.

Automatics are tougher - esp. powders that often use phosphates to address hard water.

PhilGeis

Member

October 4, 2024 at 4:46 am in reply to: Geogard ECT and heat

Think the compounds are stable at temp - don’t know that extends to this formula.

One can do what they want for personal use - in any other context, this batch should be scrapped.

PhilGeis

Member

September 27, 2024 at 8:42 am in reply to: Why does i getting foaming texture in my chemical sunscreen formulation.

You’ve confused phenylethyl alcohol with phenoxyethyl alcohol. - which are you using? Neither is sufficient and the former is not a good idea in any case

PhilGeis

Member

September 24, 2024 at 5:05 am in reply to: DMDM Hydantoin and FREE Formaldehyde

to the chemistry, I found the primary formula variable controlling free formaldehyde was perfume.

PhilGeis

Member

September 23, 2024 at 11:17 am in reply to: DMDM Hydantoin and FREE Formaldehyde

Sadly - I think the EU limit is 10 ppm so free formaldehyde per se is irrelevant- don’t use FA releasers in that regulatory climate.

FA releasers are also banned in Washington state. https://www.bdlaw.com/publications/washingtons-department-of-ecology-plans-to-ban-formaldehyde-releasers-from-cosmetics/

Ignorance is the only excuse.

PhilGeis

Member

September 21, 2024 at 7:36 am in reply to: Mold preservation with sodium benzoate

meant the cap and pent glycols

PhilGeis

Member

September 21, 2024 at 6:09 am in reply to: Mold preservation with sodium benzoate

What is formula, package and product? This would not be esp food in a shampoo.

Generally, Na benzoate is ok - glycols are too low and needs a chelator.

PhilGeis

Member

September 12, 2024 at 2:58 pm in reply to: Optiphen, Euxyl® PE 9010 or Euxyl® K712 in Shampoo+

Please speak in chemical names - not supplier terminology. Phenoxy/EHG with Benzoate and EDTA is reasonable. Why not use CMIT?

PhilGeis

Member

September 11, 2024 at 4:27 pm in reply to: How does this product’s ingredient list contain zero water?

Can you name the product?

PhilGeis

Member

October 11, 2024 at 6:09 am in reply to: Formulating eco-friendly plant-based surfactants dishwash gel & powder

And how is OP to learn soap making - and why, it is poor surfactant technology that consumer have rejected. Philosophy? What “philosophy” do you perceive for Head & Shoulders, the best selling shampoo in the world?

PhilGeis

Member

October 10, 2024 at 8:01 am in reply to: Formulating eco-friendly plant-based surfactants dishwash gel & powder

Agree Mike - soap making is as much an art as a science/technology. This alone is a compelling reason why andy982183 should not pursue soap as basis for his product.

PhilGeis

Member

October 10, 2024 at 6:41 am in reply to: Formulating eco-friendly plant-based surfactants dishwash gel & powder

Please Mike - the subject is technology/science of formulae , not your life story, ego and tiny, obscure brands.

This reply was modified 10 months, 2 weeks ago by PhilGeis.

PhilGeis

Member

October 7, 2024 at 6:57 pm in reply to: Formulating eco-friendly plant-based surfactants dishwash gel & powder

Good idea, if the science is beyond you,

This reply was modified 10 months, 3 weeks ago by PhilGeis.

PhilGeis

Member

October 7, 2024 at 6:52 pm in reply to: Formulating eco-friendly plant-based surfactants dishwash gel & powder

Typos aside - the meaning is pretty clear.

PhilGeis

Member

October 7, 2024 at 6:48 pm in reply to: Formulating eco-friendly plant-based surfactants dishwash gel & powder

Thanks Mike - no technical definition. Please speak to science not ad speak.

Figure a guy selling a product sees no problem with it. The entire surfactant market was established 6853.s based soap scum that folks knew and now quite well.

This reply was modified 10 months, 3 weeks ago by PhilGeis.

PhilGeis

Member

October 7, 2024 at 6:16 pm in reply to: Formulating eco-friendly plant-based surfactants dishwash gel & powder

ecofriendly is subjective nontechnical ad-speak.

of course SLS can be plant based - C12 alkyl from coconut. Soap is more (meaningless) ecofriendly? How so?

synthetic surfactants were successful for one reason - no more soap scum “Saponified oils” = soap.

This reply was modified 10 months, 3 weeks ago by PhilGeis.

PhilGeis

Member

October 7, 2024 at 6:45 am in reply to: Geogard ECT and heat

Some have reported efficacy with benzoate/benzyl alcohol and with benzoate/sorbic combinations. But as graillotion commented, I do think you’ll find a Gram neg gap that you’ll need to address.

You might tell us pH, packaged and expecgted use.

PhilGeis

Member

October 7, 2024 at 6:12 am in reply to: Geogard ECT and heat

Thanks, I see. Suggest you let your challenge testing be guide. In that, don’t settle for the weak standards offered in methods - you should have no recovery of bacteria/candida at day 7 and some effective reduction in mold.

PhilGeis

Member

October 6, 2024 at 9:38 am in reply to: Geogard ECT and heat

If this is product of error in making, dump it. Not sure what you’d do with/learn from the stuff.

To the question:

PG, tocopherol and glycerol are not preservatives.

Sorbate and Benzyl alcohol are chemically and PE physically at risk. Magnitude begs pH, package and anticipated use but if an effect, prob only significant in longer term stability.