Suggest reason(s) of those problems

General

Suggest reason(s) of those problems

Posted by Fekher on October 11, 2023 at 5:34 pm
*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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- This discussion was modified 7 months, 1 week ago by Fekher.
Fekher replied 7 months ago 5 Members · 15 Replies
15 Replies

ozgirl

Member
October 11, 2023 at 5:46 pm

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.
- Fekher
  
  Member
  October 11, 2023 at 5:53 pm
  
  The pH is 7, discoloration going from pink to no coloration and it is liquid colorant that I did not know it’s origin.
  - Fekher
    
    Member
    October 11, 2023 at 6:00 pm
    
    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
    - ozgirl
      
      Member
      October 12, 2023 at 6:41 pm
      
      You can get clear PET bottles with UV Filters in the plastic that reduce the impact of UV on your product.
  - ozgirl
    
    Member
    October 12, 2023 at 6:40 pm
    
    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.
    - Fekher
      
      Member
      October 13, 2023 at 2:44 pm
      
      Thanks a lot for your suggestion, especially uv filtring packaging nice new information 😊
PhilGeis

Member
October 11, 2023 at 5:48 pm

smell and color change - prob should culture. What are pH’s of products?
- Fekher
  
  Member
  October 11, 2023 at 5:54 pm
  
  Shower gel and hand liquid soap have 7 as pH
Fekher

Member
October 11, 2023 at 5:56 pm

@PhilGeis @Paprik @ketchito @evchem2
ketchito

Member
October 11, 2023 at 10:39 pm

In the case of your perfume, do you use colorants as in your other products? Do you also perceive bad olor?
- Fekher
  
  Member
  October 11, 2023 at 11:48 pm
  
  Yes In perfume I also use colorant and no the perfume did not change the odor.
  - ketchito
    
    Member
    October 12, 2023 at 10:51 pm
    
    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).
    - Fekher
      
      Member
      October 13, 2023 at 2:46 pm
      
      Thanks a lot for your comments.
JOJO91343

Member
October 11, 2023 at 11:51 pm

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
- Fekher
  
  Member
  October 12, 2023 at 11:45 am
  
  The level of cocoamide DEA is low near to 1% so I don’t go with your guess but maybe.