Sodium ascorbyl phosphate, or SAP, is a water-soluble and stable compound derived from Vitamin C. It is created by combining salt and phosphate with ascorbic acid. The enzymes involved in the process effectively split the ingredients, delivering a pure ascorbic acid. SAP’s water solubility and stability make it easy to incorporate into different formulations.
SAP is also more bioavailable than other forms of vitamin C, such as ascorbic acid, MAP, and others. It needs a pH of 6-7 and doesn’t work well in an acidic environment. SAP doesn’t oxidize, making it an ideal ingredient for various beauty products.
CAS Number: 66170-10-3
Appearance: White to off-white powder
| CAS Number | 2 |
| Appearance | White to off-white powder |

Baisifu is a supplier of sodium ascorbyl phosphate that offers a wide range of benefits, including:
Our sodium ascorbyl phosphate is widely used for different products such as:

SAP is commonly used in various concentrations to address different skin concerns. At a concentration of 0.2-3%, SAP improves the skin’s defense against environmental stressors, especially when paired with oil-soluble Vitamin E. Around 5% is particularly effective for wrinkle smoothing and increasing skin elasticity. A 3% or higher concentration is used when targeting discoloration. Additionally, using SAP in concentrations of 1-5% can soothe breakouts and act as an anti-blemish agent when combined with salicylic acid and benzoyl peroxide.
Generally, SAF is safe to use in skincare formulations. However, proper packaging is important in maintaining its effectiveness. Exposure to light and air can weaken its efficacy, so storing this compound in a cool and dry place, away from sunlight, is important.
| Chemical Formula | C6H9O9P3Na |
| Melting Point | 260 °C |
| Assay | 99% |
| Purity | 95% |
| Packaging Size | 1kg/bag; 25kg/Carton |

Vitamin C forms an important ingredient in most skincare formulations. However, your cosmetic products should deliver vitamin C safely.
Apart from sodium Ascorbyl phosphate, Baisifu also suppliesanother water soluble derivative of vitamin C called magnesium Ascorbyl phosphate. Therefore, it is critical to know the difference between these cosmetic ingredients before starting formulation product:
| Sodium Ascorbyl Phosphate | Magnesium Ascorbyl Phosphate | |
| Role in skincare product | · Anti-acne properties since it inhibits acne causing bacteria while also reducing sebum oxidation | · Hydrating properties making it suitable for sensitive and dry skin |
| Recommended working pH | · 6.0 to 7.0 | · 6.0 to 8.0 |
| Stability | · More stable than pure vitamin C and magnesium Ascorbyl phosphate | · More stable than pure vitamin C, however, it tends to be less stable than the sodium Ascorbyl phosphate |
| Skin type | · Oily skin that is prone to acne | · Dry and sensitive skin |
Sodium Ascorbyl phosphate is a popular ingredient in the cosmetic industry. Like other vitamin C derivatives, the aim is to ensure L-ascorbic acid reaches the skin surface without degrading or causing any form of irritation.
Once the sodium Ascorbyl phosphate penetrates the skin, enzymes in the skin steadily coverts it into L-ascorbic. The process is safe and does not cause any skin irritations, making perfect for sensitive skin.
After conversion, it neutralizes free radicals, enhances sun protection, boosts collagen synthesis, and helps brighten skin, besides offering anti-acne properties.

For an improved performance, you can combine sodium Ascorbyl phosphate with other cosmetic ingredients like tocopherol (vitamin E), ferulic acid, coenzyme Q10, hyaluronic acid, glycerin, ceramides, niacinamide (vitamin B3), alpha arbutin, kojic acid,retinoids and peptides.
In case you have problem getting the right formulation, Baisifu team is here to help.Let us knowthe main goals of your skincare products, and we will recommend a suitable cosmetic ingredient.
Baisifu is an ISO 22716 certified sodium Ascorbyl phosphate (SAP) manufacturer and supplier in China. We supply high purity SAP, while working with third party laboratories and our R&D to ensure you get quality cosmetic ingredients.
As a sodium Ascorbyl phosphate supplier in China, every product is a companied by the certificate of analysis (CoA) for verification. This ensures your new skincare products meet the right formulation requirements.
Whether you are a small factory, or existing cosmetics manufacturer, Baisifu offers flexible MOQ and competitive prices.
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