Functionality: Sodium Citrate is often paired with Citric Acid in a formula to create a buffer solution. Buffer solutions are useful in cosmetics where a key ingredient might become unstable if the pH shifts too far from a starting point. This can be the case in AHA products, Self-tanners, sunscreens, zinc balms and many others.
A Sodium Citrate/ Citric Acid buffer will usually keep a product at a pH of between 5.6 and 6.2 depending on the concentration of each ingredient.
Here are some general buffering guidelines:
@ pH 4 Citric Acid 0.12% : Sodium Citrate 0.11%
@ pH 4.5 Citric Acid 0.1%: Sodium Citrate: 0.15%
@ pH 5 Citric Acid 0.07% : Sodium Citrate 0.19%
@ pH 5.5 Citric Acid 0.046%: Sodium Citrate 0.22%
@ pH 6 Citric Acid 0.024% : Sodium Citrate 0.26%
New Directions Australia Pty Ltd. does not supply food grade raw materials and therefore cannot waive GST.
Prior to use: Customers should always refer to the Material Safety Data Sheet / Specification Sheet OR the ingredients label as affixed to each product which are current at the time of supply of the product.
The information provided is for educational purposes only. Individuals receiving this information must exercise their independent judgment in determining its appropriateness for a particular purpose or use.As the ordinary or otherwise use(s) of products is outside the control of New Directions Australia Pty Ltd., no representation or warranty, expressed or implied, is made as to the effect(s) of such use(s), (including damage or injury), or the results obtained. New Directions Australia Pty Ltd. expressly disclaims responsibility as to the ordinary or otherwise use(s). Furthermore, nothing contained herein should be considered as a recommendation by New Directions Australia Pty Ltd. as to the fitness for any use. The liability of New Directions Australia Pty Ltd. is limited to the value of the goods and does not include any consequential losses.