Sodium Phosphate Dibasic
* A buffering agent
* Also known as Disodium Phosphate
Functions:
Sodium Phosphate Dibasic is used in cosmetics and personal care products primarily as a buffering agent, although it is also seen as a corrosion inhibitor, fragrance ingredient, and pH adjuster. It is also used in some laxatives, especially those used to cleanse the bowel before diagnostic procedures such as colonoscopies, according to CosmeticsInfo.org. A patent filed by Pond's also lists Sodium Phosphate Dibasic as a buffering agent, sometimes functioning as a weak buffer and sometimes as a strong buffer.
Sodium Phosphate Dibasic is FDA approved, and the CIR has deferred its approval to the FDA's classification.
Safety Measures/Side Effects:
The Cosmetics Database has found Sodium Phosphate Dibasic to be a low hazard ingredient, and only notes minimal concerns regarding neurotoxicity and organ system toxicity, as well as irritation because animal studies showed broad systemic effects and skin irritation at moderate doses (it does note that low dose studies may be unavailable for this ingredient).
The Material Safety Data Sheet lists Sodium Phosphate Dibasic as "Slightly hazardous in case of skin contact (irritant), of eye contact (irritant), of ingestion, of Inhalation," and notes no chronic health effects from its use.
Recommended Products w/ Sodium Phosphate Dibasic:
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