You Are Here:  HomePreservatives -  Potassium Sorbate

Potassium Sorbate




Price: $2.95

QTY
Add to cart
Add to wish list

Potassium Sorbate, FCC Kosher   CAS No. 24634-61-5

Potassium sorbate is a food grade preservative generally regarded as safe (GRAS) worldwide. It is the inactive salt of sorbic acid. It readily dissolves in water where it converts to sorbic acid, its active form, at a low pH. Sorbic acid is very pH dependent. While it shows some activity up to pH 6 (about 6%), it is most active at pH 4.4 (70%). At pH 5.0 it is 37% active. As sorbic acid, it is considered to be active against mold, fair against yeast and poor against most bacteria. Sorbic acid is an unsaturated fatty acid and as such is subject to oxidation (use of an antioxidant like Mixed Tocopherols T50 is recommended). It is also sensitive to UV light and may turn yellow in solution.  Gluconolactone is reported to stabilize potassium sorbate against discoloration and darkening in aqueous solutions and may be useful in stabilizing sorbic acid in the water phase of a product.

While sorbic acid is naturally occurring in some fruits (like the berries of the mountain ash), virtually all of the world's production of sorbic acid, from which potassium sorbate is derived, is manufactured synthetically, and is a nature-identical compound chemically equivalent to the molecule found in nature. It is a widely used preservative in food production, but cannot be considered "natural" (no matter what you've heard!).

Sorbic acid can cause contact dermatitis at concentrations above or below 0.5%. Studies show that if it is used at a concentration of no more than 0.2% it is unlikely to constitute a safety hazard.

Potassium sorbate is not a broad spectrum preservative for cosmetic use and should be combined with other preservatives. If potassium sorbate is used as a preservative, the pH of the finished product may need to be reduced for potassium sorbate to be effective.  This is because potassium sorbate is the inactive salt form of sorbic acid.  To be useful, the pH of the formulation must be low enough to release the free acid for useful activity. 

Following is a chart to of the relative activity at various pH:

Activity of Sorbic Acid
pH % Active Sorbic Acid
3 98
4 85
5 37
6 5.5
7 0

All cosmetic products should undergo microbial testing to ensure the efficacy of any preservative system.

At temperatures above 60°C (140°F), potassium sorbate can begin to sublime. Add to the water phase of formulations at a temperature below 60°C (140°F). If adding it after oil and water phases have been combined, predissolving the required potassium sorbate in a portion of the water phase will make it easier to incorporate into the formed emulsion.

PLEASE NOTE:  While our Potassium Sorbate is a food grade product, it is repackaged as a cosmetic raw material and is for external use only!  Do not purchase this for use in food processing!

Recommended Use Levels: 0.1% - 0.5%
Appearance: White noodles (prills)
Solubility: Soluble in water up to 58%
Storage: Store in a cool dry place away from heat or light.
INCI: Potassium Sorbate

California Prop 65 Statement: The following statement is made in order to comply with the California Safe Drinking Water and Toxic Enforcement Act of 1986. This product is not known to the State of California to cause cancer, birth defects or other reproductive harm.

Here you will find Material Safety Data Sheets (MSDS) and Technical Data Sheets. The files are in PDF format. To access a file, click on the relevant button or the file name. For your convenience, it will open up in a new browser window.

Please note: You must have Acrobat Reader to view the files listed here. If necessary, the Acrobat Reader link will directed you to a page where it can be downloaded.

Technical Data

 
Material Safety Data Sheet (MSDS)

Potassium Sorbate MSDS

 


Customers Also Bought

Customers who bought this item also bought...
dl-Panthenol
dl-Panthenol
Citric Acid
Citric Acid
Sodium Benzoate
Sodium Benzoate
Biguanide 20
Biguanide 20

News
05-25-2018
So that our staff may enjoy the Memorial Day Holiday, Lotioncrafter's offices will be closed on Monday, May 28th. We will reopen on Tuesday, May 29th. During this time, we will not be returning phone calls or email messages. Shipping will resume on Tuesday, May 29th. Orders, emails and phone calls will be handled in the order received, as best we are able. Please expect some delays as we work through the holiday backlog! We also cannot guarantee changes to orders will be seen before orders have shipped, those that we do catch, will be held back to adjust, which will mean a shipping delay. We appreciate your understanding. Have a safe and happy Memorial Day!

Previous news

Sign-up for our newsletter

Our Customers Say...
Sesaflash is awesome...I ordered a small bottle of it and think its wonderful....I have to say the shipping was awesome, I live in Ontario Canada..and I received my order in 4 days...will I order again, you bet ya.....5 stars from me
Sue
Sue

This is by far the most comprehensive and technologically advanced site I have visited. I am very impressed by your product availability and ease of using your website. Can't wait to receive my first order and look forward to working with you in the future.
Janet Fikany, (JanetLand Delectables)

I just wanted to express how impressed I am with Lotioncrafters for working with me! I expressed in my order how urgent it was I needed my supplies and they sent my products the same day! These are real people understanding real people's needs - THANK YOU SO MUCH!
Sarah

This company is amazing I have only had two orders and their customer service is the most professional I have encountered! I'm very satisfied
marites magpantay, (Beautyevolved)

This was my first time ordering and was very impressed with everything. Excellent packaging, fast shipping to Canada and I also received a partial refund on my shipping charges. I was totally shocked. It is so rare to find such honest businesses today. I would definitely recommend and I will probablly be back if I am succesful at doing my own serums.
Elena Matera

View All Testimonials
Write Your Own Testimonial



Copyright © 2002-2018 Lotioncrafter® LLC. All Rights Reserved. 48 Hope Lane, Eastsound, WA 98245 Tel: 360-376-8008 Fax: 360-376-1409


HACKER SAFE certified sites prevent over 99.9% of hacker crime.