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Products Description
Vitamin C Sodium Ascorbyl Phosphate is a water-soluble, stable vitamin C derivative with a molecular formula of C₆H₇Na₂O₉P and a molecular weight of 322.05. Its structure is composed of phosphate, sodium ions and ascorbic acid, and it has strong hydrophilicity and high stability. The compound is usually a white to off-white powder, and its aqueous solution is colorless and transparent with a pH value of about 9.0 to 10.0. In cosmetics, Vitamin C Sodium Ascorbyl Phosphate can be converted into an active form of ascorbic acid by skin enzymes to exert an antioxidant effect. It has high stability, is not easily affected by light, oxygen and heat, and is suitable for a variety of skin types. This ingredient is often used in skin care products as a stable source of vitamin C.
Vitamin C Sodium Ascorbyl Phosphate test Report
|
Analysis Items |
Specification |
Result |
|
Appearance |
White or pale yellowish powder |
white powder |
|
ldentification |
Match with the reference IR spectrum |
Conform |
|
Assay |
≥98.0% |
99.0% |
|
Loss on drying |
≤11.0% |
9.8% |
|
pH |
8.00-10.00 |
9.05 |
|
Clarity of solution |
Clear |
Conform |
|
Color of solution |
Not deeper than yellow 0.5 |
Conform |
|
Free phosphoric.acid |
≤0.5% |
Conform |
|
Chloride (In Cl) |
≤0.035% |
Conform |
|
Heavy metals(In Pb) |
≤10mg/kg |
<10mg/kg |
|
Arsenic |
≤1.0mg/kg |
<1.0mg/kg |
|
Conclusion: Conform to Specification |
||
Benefits of Vitamin C Sodium Ascorbyl Phosphate
High chemical stability
Vitamin C Sodium Ascorbyl Phosphate is a derivative of vitamin C. It forms a stable phosphate bond with L-ascorbic acid (Vitamin C) through a phosphate group in its molecular structure. This structure improves its stability in aqueous solution and can avoid the rapid degradation reaction of traditional vitamin C when exposed to air, light or high temperature. Especially under neutral or slightly alkaline pH conditions (pH 7.0~10.0), its chemical activity lasts much longer than L-ascorbic acid. The stability of this product can be maintained for more than 12 months under room temperature storage, and it can still maintain more than 90% activity for at least 30 days under high temperature (40°C), which is extremely beneficial for the development of many skin care products that require hot filling or long-term storage. The product has a pH value of 9.05, which meets the requirements of the aqueous phase formula system for stability maintenance performance. It appears in a "clear" state in the solution, indicating that it has good dispersion performance and is not prone to precipitation or crystallization.
Dual effects of anti-oxidation and whitening
Sodium Ascorbyl Phosphate itself does not directly possess all the physiological activities of traditional vitamin C, but after contacting phosphatase on the skin surface, it will gradually hydrolyze and release free L-ascorbic acid, thereby playing the role of anti-oxidation, inhibiting melanin production and promoting collagen synthesis in the epidermis. This slow-release mechanism can prolong the action time of active vitamin C in the skin and reduce the adverse reactions caused by a one-time large-dose stimulation. Its antioxidant mechanism is mainly reflected in the scavenging of free radicals (ROS) and blocking the oxidation chain reaction, thereby protecting skin cells from damage by factors such as UV radiation, pollutants and lipid peroxidation. SAP can significantly reduce the expression level of hydroxyl radicals and superoxide anions in the skin at a concentration of 2%, and inhibit the lipid peroxidation rate by more than 40%. After 4 weeks of continuous use, the skin roughness decreased by an average of 11%, and the area of pigmentation decreased by 9%, showing good clinical efficacy.
Strong operability
SAP also has good water solubility, with a solubility higher than 10 g/100 mL (at 25°C), which is convenient for process operation. It does not require the use of solvents or emulsifiers to assist in dissolution and can be added directly to the water phase, thereby simplifying the production process and reducing manufacturing costs. For brands that hope to control product prices through mass production, the controllability of this raw material is particularly important. Due to the excellent stability of SAP, many international raw material manufacturers and suppliers use it as a standard whitening and antioxidant active substance in cleansing, essence, sunscreen, lotion, gel and other categories. Especially in compound systems, such as when combined with ingredients such as niacinamide, azelaic acid, and tranexamic acid, there will be no obvious reaction interference, which can ensure the long-term performance consistency of the entire formula.
Quality Certification
Welcome To Contact Us
For thirteen years,ZHENYIBIO has been focusing on Whitening ingredient. As a professional manufacturer of Vitamin C Sodium Ascorbyl Phosphate, we continuously improve production processes and strengthen cooperative services.
Phone Number
(86)-0153 0920 6328
alexxue@zhenyibio.com
FAQ
Q: How stable is SAP compared to pure vitamin C?
A: SAP is a phosphated vitamin C derivative that has stronger light stability and oxidation stability in the formula, is not easy to change color or become ineffective, and is suitable for long-term storage and transportation.
Q: How does SAP work in the skin?
A: SAP can be gradually converted into active vitamin C (L-Ascorbic Acid) by the enzyme system in the skin after contact with the skin, thereby exerting antioxidant and whitening effects.
Q: Is SAP photosensitivity?
A: Unlike L-Ascorbic Acid, SAP is not photosensitivity, so it can be used in daily skin care products without increasing the risk of photosensitivity.
Q: Can SAP be used as a main anti-acne ingredient?
A: SAP has an inhibitory effect on Propionibacterium acnes and can reduce pigmentation caused by inflammation, so it is also commonly used in anti-acne skin care products.
Q: What is the difference between SAP and ethyl vitamin C and ascorbyl glucoside?
A: SAP has good water solubility and high safety, and is suitable for mild whitening and long-term use; ethyl vitamin C has strong fat solubility and better penetration; ascorbyl glucoside has better stability but slightly lower conversion rate. Each has its own advantages, and should be selected in combination with formula requirements when purchasing.
Q: Does SAP have an instant brightening effect?
A: Although SAP is known for its progressive whitening, it also has a certain instant skin brightening effect, especially under the synergistic effect of moisturizing and anti-oxidation, it can enhance skin feel.
Q: Is SAP effective against blue light and pollution?
A: SAP has a certain ability to resist free radicals, which can reduce the damage to the skin caused by environmental stress such as blue light and air pollution, and is suitable for anti-pollution formula requirements.
Q: What is the optimal pH range for SAP?
A: SAP is most stable between pH 6.0 and 7.0, and is more suitable for skin acceptance. In formula design, a neutral environment should be maintained as a priority.
Q: Is SAP suitable for cleansing products?
A: SAP can also be used in cleansing, but due to the short contact time, its antioxidant or whitening effect is limited. It is more suitable for long-term contact products such as essences, creams, and masks.
Q: Can SAP be used together with sunscreen ingredients?
A: Yes, SAP is compatible with physical and chemical sunscreens, and synergistic antioxidants can enhance the sunscreen effect. It is commonly found in day creams and sunscreen essences.
Q: Is SAP prone to caking or discoloration during the production process?
A: SAP has good crystallinity and is usually relatively stable, but it is easy to absorb moisture in high temperature and high humidity environments. It should be avoided from contact with water vapor during packaging and transportation.
Q: Does SAP need to add a special stabilizer to the formula?
A: SAP itself is relatively stable and usually does not require additional antioxidants, but antioxidants or chelating agents (such as EDTA) can be added as appropriate in compound systems containing multiple sensitive ingredients.
Q: Is SAP a high-cost component in the formula cost?
A: Compared with traditional whitening ingredients, such as arbutin, niacinamide, etc., SAP is a mid-to-high-end raw material, but due to its mildness, safety and multi-effects, it still has advantages in cost performance.
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