Description

Magnesium Ascorbyl Phosphate CAS NO 113170-55-1 is a stable, water-soluble derivative of Vitamin C (ascorbic acid) where the phosphate group is complexed with magnesium. This chemical modification is critical as it provides exceptional stability against oxidation, heat, and light compared to pure ascorbic acid, while still being enzymatically converted to active Vitamin C in the skin. It is primarily sought after by manufacturers in the cosmetics, personal care, and nutraceutical industries for its potent antioxidant and skin-brightening properties. Its stability makes it an ideal active ingredient for a wide range of formulated products requiring a long shelf life.

Application

• Cosmetic & Skincare Formulations: As a key active in anti-aging serums, creams, and lotions for its collagen synthesis promotion and antioxidant protection.
• Skin Brightening Products: Used in treatments for hyperpigmentation, age spots, and uneven skin tone due to its ability to inhibit melanin production.
• Sun Care and After-Sun Products: Incorporated for its antioxidant activity to neutralize free radicals generated by UV exposure.
• Hair Care Products: Added to shampoos and conditioners for antioxidant benefits and to protect hair from environmental damage.
• Pharmaceutical Topicals: Used in certain dermatological preparations for wound healing and skin repair.
• Functional Food & Dietary Supplements: As a stable source of Vitamin C in powdered drink mixes and supplement tablets (subject to appropriate regulatory compliance).

Basic Information

Product Name	Magnesium Ascorbyl Phosphate
CAS No.	113170-55-1
Molecular Formula	C6H6O9P·1/2Mg
Molecular Weight	279.42 g/mol (anhydrous basis)
Synonyms	L-Ascorbic Acid, Magnesium Phosphate (2:1); Magnesium Ascorbate Phosphate; Ascorbyl Phosphate Magnesium; Vitamin C Phosphate Magnesium Salt; MAP (Cosmetic Ingredient); 2-O-Phosphono-L-ascorbic Acid Magnesium Salt; Magnesium L-Ascorbyl-2-Phosphate; 3-Oxo-L-gulofuranolactone Magnesium Phosphate Enol Ester
EINECS	Contact for details

Quality Control

Our Magnesium Ascorbyl Phosphate is manufactured under strict quality management systems. Each batch is tested to ensure it meets high-purity standards suitable for cosmetic and personal care applications. We provide comprehensive Certificates of Analysis (COA) that detail purity, assay, and impurity profiles. While typically produced to cosmetic-grade specifications, compliance with relevant standards can be discussed based on customer requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); therefore, the container must be kept tightly sealed after opening to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
pH (10% solution)	6.0 - 8.0
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	Contact for details
Microbiological Analysis	Meets cosmetic-grade limits

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.