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Suggest reason(s) of those problems
*For hand soap contains: distilled water, CAPB, N70, NaCl, perfume, colorant, Cocoamide DEA, cathon cg 0.1%<div>
I have discoloration and bad odor of some samples after just 3 months
*For perfume which contains just alcohol, distilled water, perfume I
have discoloration
*For shower gel contains : distilled water, CAPB, N70, NaCl, perfume, colorant, Cocoamide DEA, Pq 7,cathon cg 0.1%
I have discoloration of some samples after just 3 months.
Can you suggest please the reason of such results.
Our guess in company is may ( bad quality of color, weak Preservative and contamination in water)
@ozgirl @Perry44 @chemicalmatt @Pharma @Abdullah @Chemist77 @Graillotion @ngarayeva001
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15 Replies
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Microbial contamination is your most likely reason for the bad odor. What is your pH? Kathon CG is best up to pH 7 with some activity up to pH 8.
What type of discoloration? What colorant are you using? Is the color fading (UV stability of dye) or is it turning yellow/brown (fragrance oxidation)?
You can change packaging to opaque or use PET with UV filters to help reduce color changes.
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The pH is 7, discoloration going from pink to no coloration and it is liquid colorant that I did not know it’s origin.
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I can not change packaging I should find solution with a transparent package even in market there are same product with transparent package so there is solution even in such packaging
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You can get clear PET bottles with UV Filters in the plastic that reduce the impact of UV on your product.
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Using a colorant that you don’t know its origin is concerning from a safety point of view.
It also means that you can’t really trouble shoot the issue because you don’t know what you are working with. I would look for a different colorant with a known origin.
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Thanks a lot for your suggestion, especially uv filtring packaging nice new information ????
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smell and color change - prob should culture. What are pH’s of products?
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Shower gel and hand liquid soap have 7 as pH
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In the case of your perfume, do you use colorants as in your other products? Do you also perceive bad olor?
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Yes In perfume I also use colorant and no the perfume did not change the odor.
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You mighr be experiencing two different issues at the same time: color loss due to dye oxidation (for this a UV filter is needed), and product contamination (review your preservative system).
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Thanks a lot for your comments.
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If the Bad odor is fishy, it could be because of Cocamide DEA which stands for Cocamide Diethanol amine and the odor of amine is fishy
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The level of cocoamide DEA is low near to 1% so I don’t go with your guess but maybe.
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