You Are Here:  HomePreservatives -  Potassium Sorbate

Potassium Sorbate




Price: $2.95

QTY
Add to cart
Add to wish list

Potassium Sorbate, FCC Kosher   New Lower Pricing!
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 60C (140F), potassium sorbate can begin to sublime. Add to the water phase of formulations at a temperature below 60C (140F). 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

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
01-25-2018
A car drove off the Anacortes Ferry Dock about 9:45AM this morning and emergency crews are there in a search and recovery effort. Service to and from Orcas Island is expected to be suspended for many more hours. This will delay UPS and Mail shipments by a day as these services will miss connections on the mainland. We appreciate your understanding of this situation beyond our control. Please keep the occupants of the vehicle in your thoughts and prayers. Here's a link to the story: http://www.kiro7.com/news/local/vehicle-plunges-off-anacortes-ferry-dock/689312503

Previous news

Sign-up for our newsletter

Our Customers Say...
Hi Jenny,
I just had to write to you a give you a HUGE kudos!!!!!!!!!!

Not only did I place my order on Monday .. I didn't pay for it until Monday afternoon. I received it this morning ... Wednesday morning. For the record, I am 1791 miles away from you (yes, I looked it up). Truly unbelievable .. especially this time of year with the holiday rush!

You have always been .. and continue to be .. so helpful with your ingredients and products. You ship *SO* quickly! I just adore you .. your products ... your service. You have gained a customer for life!!!

I just hope that someday .. somewhere .. I can give back to you in some way. Maybe it'll be referrals? I'll be shouting from the rooftops how great you are!!
Lezlee W.

I recently placed an order and part of my order went to the wrong place. I received several personal phone calls along the way from Jen, the mistake was explained, another shipment was sent out right away, and received it within a matter of days. I love the shipping cost adjustments that are normally made with my orders. I love the quality of the products, the packaging, and the new website. Thank you, Jen.
JO
JO

I placed my first order a couple of days ago. It arrived today. Everything is professionally labeled and packaged. Thank you! I will be back. Nancy
Nancy Babbs, (Bellevue Organics)

A great experience. Prompt service, delivery in 2 days, box carefully packed with a thank you item, and when shipping costs turned out to be less than estimated, a partial refund. Email communication throughout the transaction really makes this company exceptional... Will definitely recommend to others. Thanks so much!
Mary Feuer

Got my products well in time. Second time I have ordered from Lotioncrafter, very happy with the customer service and products. Super excited about the ingredients I got.
Trym

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.