Calcium Ascorbate

Product Description

Green Stone Swiss supplies high-purity Calcium Ascorbate manufactured under strict GMP-aligned quality systems, ensuring consistent batch-to-batch performance for professional cosmetic and personal care brands worldwide. Our direct factory supply model delivers reliable bulk quantities with full technical documentation and free sample support.

Calcium Ascorbate is the calcium salt of ascorbic acid. In skin care it is a water-soluble vitamin C salt, distinct from Sodium Ascorbate and from free ascorbic acid. This grade is a white to pale yellow powder that dissolves in water.

Essences and light gels continue to specify this INCI when the formula needs vitamin C without adding sodium. Cosmetic-grade Calcium Ascorbate remains a practical bulk active when the assay is on the COA.

Product Specification

• INCI Name: Calcium Ascorbate
• CAS No.: 5743-27-1
• Molecular Formula: C₁₂H₁₄CaO₁₂
• Molecular Weight: 390.31 Da
• Appearance: White to pale yellow powder
• Purity: Typical ≥98%
• Solubility: Soluble in water
• Suggested pH: 5.0–7.0 in finished systems
• Storage: Store in a cool, dry place; protect from light, air, and moisture

Key Benefits & Applications

Calcium Ascorbate is a water-soluble vitamin C salt used in antioxidant and tone-care systems.

• Dissolves in the water phase of essences and gels
• Used when the formula should avoid the sodium salt
• Distinct from Sodium Ascorbate; specify the cation on the COA
• Fits leave-on and rinse-off systems at a modest dose
• Typical use level: 0.1–1.0% in the finished formula

Formulation Guidelines

Follow these guidelines to dissolve Calcium Ascorbate in a cool water phase.

• Suggested Use Level: Typical 0.1–1.0% in the finished formula
• pH Range: Suggested 5.0–7.0 after adjustment
• Addition: Dissolve in the water phase during cool-down, below 40°C
• Stability: Protect from light and air; do not hold a hot solution
• Combine with Ferulic Acid when an oil-phase antioxidant is needed beside this salt.