My Dishwash Colour is fading when I put it in direct sun - General - Chemists Corner

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My Dishwash Colour is fading when I put it in direct sun

Posted by Rafique on June 10, 2021 at 1:57 am

Dear expert
Need suggestion
My formula is

Selfunic 96 7%
Sles 70 7%
Caustic to ajust ph
Citric acid 2g/kg
Color food lime yellow
Salt. 20g / kg
Formaline 1g/kg

Your help will be appreciated.

ketchito replied 1 year, 10 months ago 5 Members · 5 Replies
5 Replies

chemicalmatt

Member
June 12, 2021 at 3:31 pm

Food lime yellow? That would be Yellow 5?
ozgirl

Member
June 14, 2021 at 11:25 pm

This is a very common problem and there are three main options for this problem

1. Change the colour and use a different dye

2. Put the product in an opaque or amber bottle

3. Get a UV blocking additive added to your clear PET bottle. This is more expensive than standard bottles. It is done during manufacture of the bottle and minimum order quantities are generally required.
Aziz

Member
June 16, 2021 at 5:16 pm

Quality of Sulphonic acid may lead to an unstable product and result in discolouration which I suffered.
Rafique

Member
July 23, 2021 at 5:28 am

I used food color and somebody suggest me pigment color. Can we use it in dishwash
ketchito

Member
July 23, 2021 at 12:21 pm

@Rafique If the issue doesn’t show up when you put the product away from UV light and If there’s no pH drift causing the color fade, then add a small amount of a UV absrober (such as Benzophenone-4…0.05% might work).

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