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🧪 Citric Acid

Citric Acid | INCI: Citric Acid | CAS: 77-92-9

INCI Information

INCI Name
Citric Acid
Common Name
Citric Acid
CAS Number
77-92-9
Category
pH Adjuster / Chelating
Molecular Formula
C₆H₈O₇
Molecular Weight
192.12 g/mol
Appearance
White, crystalline powder or granules
Solubility
Very soluble in water (59 g/100ml at 20°C)
Typical Concentration
0.1% – 2%
pH Range
Strongly acidic (1% solution pH ~2.2)
Functions:
pH adjusterChelating agentPreservative aid
Available Purity Grades:
  • 99.0% (Food grade)
  • 99.5% (USP/EP)
  • 99.9% (Pharma)

💰 Indicative Price Range (Bulk)

Typical B2B pricing across verified suppliers
$1 – $4 $/kg
Prices vary by purity, MOQ, and order volume. Always request formal quotes.

📖 About Citric Acid

Citric Acid is the most widely used pH adjuster in cosmetics. It lowers pH, chelates metal ions (improving preservative efficacy), and adds a pleasant citrus scent at low concentrations.

🛒 Purchasing Guide & Tips

❓ Frequently Asked Questions

❓ Is Citric Acid natural?

Yes, it's found naturally in citrus fruits. Commercial production is via fermentation of molasses.

❓ Can I use it as a preservative?

It's not a preservative alone, but it enhances preservative effectiveness by lowering pH and chelating metals.

❓ What's the difference between citric acid and sodium citrate?

Citric acid lowers pH; sodium citrate buffers pH and is gentler on skin. Many formulators use both.

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