Carbon black or FeO - Chemists Corner

Formulating

Carbon black or FeO

Posted by AbbasMo on July 26, 2021 at 12:14 pm

Hey guys

I have a mascara formula that I use of FeO Cl 77499 in that as black color agent, but I haven’t dark black color now.

I know that carbon black can help me in this issue but it’s so harmful base on EWG.
In other side, I saw many mascaras that hadn’t carbon black in Formulas.

What’s your opinion?

Thank you in advance for your help

AbbasMo replied 3 years, 2 months ago 4 Members · 11 Replies
11 Replies

PhilGeis

Member
July 26, 2021 at 1:28 pm

https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=74.2052
AbbasMo

Member
July 26, 2021 at 7:15 pm

PhilGeis said:

https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=74.2052

Thanks a lot
I have a question now, Do FeO containing mascaras have carbon black also?
Could they not have reported this?
Bill_Toge

Member
July 27, 2021 at 8:43 pm

how much iron oxide (which is Fe3O4, strictly speaking) are you using?

believe me, if you put enough of it in you can make your mascara very black indeed
AbbasMo

Member
July 28, 2021 at 5:50 am

Bill_Toge said:

how much iron oxide (which is Fe3O4, strictly speaking) are you using?

believe me, if you put enough of it in you can make your mascara very black indeed

Hi
I use 16% of Black Fe and 3% Brown Fe and 1% yellow Fe in my formulation.
This color combination still did not provide me with the desired black.
ngarayeva001

Member
August 8, 2021 at 12:21 am

Maybe the right solution is to stop relying on EWG? Seriously put EWG in search function of this forum and read what chemists say.
Bill_Toge

Member
August 9, 2021 at 8:18 pm

you’re best off using a dispersion rather than the dry powder; the powder needs to be milled very thoroughly to get the full depth of colour, and if you use a dispersion, the manufacturer will already have done the hard work
AbbasMo

Member
August 27, 2021 at 10:38 am

ngarayeva001 said:

Maybe the right solution is to stop relying on EWG? Seriously put EWG in search function of this forum and read what chemists say.

OK, Thanks, I want have safe products, only.
AbbasMo

Member
August 27, 2021 at 10:45 am

Bill_Toge said:

you’re best off using a dispersion rather than the dry powder; the powder needs to be milled very thoroughly to get the full depth of colour, and if you use a dispersion, the manufacturer will already have done the hard work

Thanks, I can’t understand your mean.
What’s dispersion procedure? Do we need a particular mean?
Bill_Toge

Member
August 27, 2021 at 8:37 pm

AbbasMo said:

Bill_Toge said:

you’re best off using a dispersion rather than the dry powder; the powder needs to be milled very thoroughly to get the full depth of colour, and if you use a dispersion, the manufacturer will already have done the hard work

Thanks, I can’t understand your mean.
What’s dispersion procedure? Do we need a particular mean?

what I’m saying is that you’d be better off buying a pre-prepared black iron oxide dispersion (e.g. OD75BJE from Kobo Chemicals) than trying to grind it yourself
ngarayeva001

Member
August 29, 2021 at 4:27 am

I suggest that you rely on FDA or equivalent professional bodies around the globe, not EWG. Their ratings aren’t based on science. Moreover they are utterly inconsistent.
AbbasMo

Member
September 24, 2021 at 8:40 am

ngarayeva001 said:

I suggest that you rely on FDA or equivalent professional bodies around the globe, not EWG. Their ratings aren’t based on science. Moreover they are utterly inconsistent.

Thanks a lot