Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
1. Basic Product Profile
- Full IUPAC Name: Cross-linked poly(acrylic acid)
- Aliases: Carbopol 940, Polyacrylic acid crosslinked polymer
- CAS Number: 9003-01-4
- EINECS: N/A
- Molecular Formula: (C3H4O2)n cross-linked polymer
- Molecular Weight: Ultra-high molecular weight polymer
- Chemical Classification: Cross-linked acrylic polymer thickener, cosmetic rheology modifier, pharmaceutical gel excipient
- Core Advantages
High-efficiency thickening, suspending and gel-forming performance after neutralization. Produces clear, smooth gel system with excellent suspension capacity and long-term viscosity stability. Non-toxic, biocompatible, compliant with USP/EP/FCC standards, widely used in personal care, topical pharmaceutical preparations and water-based industrial formulations.
2. Physical & Chemical Properties
2.1 Physical Index
- Appearance: White fluffy fine powder
- Odor: Faint characteristic acrylic odor
- Solubility: Swells and hydrates in water, polar aqueous alcohols; insoluble in non-polar organic solvents
- pH (1% aqueous dispersion): 2.5–3.5
- Viscosity (0.5% neutralized gel): 40,000–60,000 mPa·s
- Hygroscopy: Strongly hygroscopic, requires sealed moisture-proof storage
- Particle Feature: Ultra-fine powder for fast hydration without agglomeration
2.2 Chemical Properties
- Cross-linked Polyacrylic Acid Structure: Abundant carboxyl groups on polymer chain; neutralization with triethanolamine, NaOH generates negative charge repulsion to form high-viscosity gel
- Ion Sensitivity: Viscosity sharply drops in high-concentration electrolyte solution; compatible with low-salt formula systems
- Thermal Stability: Stable below 100℃; long-term high temperature leads to slight viscosity loss
- Photostability: Add antioxidant to avoid viscosity attenuation under prolonged UV exposure
- Compatibility: Compatible with non-ionic surfactants, humectants and common cosmetic excipients; incompatible with high-concentration cationic substances and heavy metal ions
3. Main Application Fields
3.1 Cosmetic & Personal Care (Core Usage)
Thickener, stabilizer and gel matrix for facial gel, hand sanitizer, sunscreen, hair styling gel and body care lotions; provides transparent gel texture and stabilizes suspended functional particles.
3.2 Pharmaceutical Topical Preparations
Gel base for antibiotic ointment, anti-inflammatory skin gel, ophthalmic gel and transdermal drug delivery systems; meets medical auxiliary material standards.
3.3 Water-based Industrial Formulations
Thickener for water-based coatings, water-soluble adhesives and household cleaning gel products.
4. Quality Specification Table
| Test Item | Standard Index |
| CAS No. | 9003-01-4 |
| Molecular Formula | (C3H4O2)n cross-linked polymer |
| Appearance | White fluffy fine powder |
| Viscosity (0.5% neutralized gel) | 40,000–60,000 mPa·s |
| pH (1% dispersion) | 2.5–3.5 |
| Moisture Content (KF) | ≤2.00% |
| Heavy Metals (Pb) | ≤10 ppm (Cosmetic/Pharma Grade) |
| Residue on Ignition | ≤0.10% |
| Bulk Package | 25kg woven bag with PE inner liner |
| Sample Package | 1kg / 5kg sealed moisture-proof plastic bag |
| Storage Requirements | Hermetic moisture-proof cool dry warehouse ≤25℃; isolate humid air and volatile alkaline substances |
| Transportation Rule | Non-hazardous acrylic polymer auxiliary, waterproof packaging required during transit |
| Shelf Life | 24 months under intact sealed packaging |
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