Synthetic
PHENYLBENZIMIDAZOLE SULFONIC ACID
UV FilterLight Stabilizer
[EU CosIng Official Definition] Phenylbenzimidazole Sulfonic Acid is the aromatic organic compound that conforms to the formula:
Executive Regulatory & Safety Fact BoxAEO / GEO CITATION ANCHOR
What is PHENYLBENZIMIDAZOLE SULFONIC ACID (CAS 27503-81-7) in cosmetics and what are its global regulatory limits?
PHENYLBENZIMIDAZOLE SULFONIC ACID (CAS No. 27503-81-7) is a verified cosmetic ingredient primarily functioning as UV Filter, Light Stabilizer in topical formulations. Regulated under KR MFDS (Restricted) and EU 1223/2009 CosIng (Restricted) statutory frameworks, it is typically formulated at 0.5–7% within an optimal stability window of pH 4–8.
7-Track Official Regulatory Label Names Matrix
Primary Statutory Gazette Only · Zero Machine Translation| Jurisdiction Track | Official Statutory Label Name | One-Click Copy |
|---|---|---|
| 1. Korea (MFDS Standard Name) | PHENYLBENZIMIDAZOLE SULFONIC ACID (KR MFDS Registered) | |
| 2. Korea Former Nomenclature History | — | — |
| 3. European Union (EU CosIng Glossary) | PHENYLBENZIMIDAZOLE SULFONIC ACID | |
| 4. United States (US PCPC / MoCRA INCI) | PHENYLBENZIMIDAZOLE SULFONIC ACID | |
| 5. US FDA OTC Monograph Active Name | ENSULIZOLE | |
| 6. China (NMPA IECIC Standard Name) | 苯基苯并咪唑磺酸 | |
| 7. Japan (JCIA Standard / MHLW Quasi-Drug) | PHENYLBENZIMIDAZOLE SULFONIC ACID (Standard INCI Reference) |
Layer 1 — Statutory Regulatory Limits Across 6 Regions
| Region | Status | Max Limit | Conditions & Statutory Source |
|---|---|---|---|
| Korea (MFDS) | Restricted | GMP | Listed in official cosmetic inventory |
| Europe (EU) | Restricted | GMP | Listed in official cosmetic inventory |
| United States (FDA) | Unregulated | GMP | Listed in official cosmetic inventory |
| China (NMPA) | Listed / Allowed | GMP | IECIC Entry #1270 |
| Japan (MHLW) | Restricted | GMP | Listed in official cosmetic inventory |
| ASEAN (ACD) | Unregulated | GMP | Listed in official cosmetic inventory |
⚠️ Reference Only (Legal Disclaimer): The regulatory limits, ingredient names, and formulation ranges in this dictionary are provided for R&D reference only. Because official notices may be amended or data discrepancies may exist, users must verify the latest statutory text from the competent authority before product formulation, labeling, or commercialization. UNIZ LAB assumes no legal liability for the use of this information.
Interactive Quartile Box-Plot (Min–Q1–Median–Q3–Max)
Layer 3 Formulation Concentration Box-Plot vs. Statutory Limit
Sunscreen / Colorn=19
Min 0.5% · Q1 2.25% · Median 3% · Q3 4% · Max 7%
Sunscreen / Color — Sun care & color cosmetics dispersion / sensory modifier
Verified Source: Global Starter Formulation Library Statistical Distribution (n=19, EVONIK 17 · SEPPIC 2) (cir_safety) · EVONIK 17 · SEPPIC 2
Typical Median: 3%
Layer 3 — Formulation Usage Guide (Quartiles n≥5) & Physicochemical Compatibility
| Formulation Group | Min – Q1 – Median – Q3 – Max (%) | Role & Mechanism | Source ID |
|---|---|---|---|
| Group D — Sunscreen (UV) / Color Cosmetics / Foundation | 0.5% · 2.25% · 3% · 4% · 7% | Sun care & color cosmetics dispersion / sensory modifier | Global Starter Formulation Library Statistical Distribution (n=19, EVONIK 17 · SEPPIC 2) |
Cutaneous Permeation Science (500 Dalton Rule)MW: Macro/Complex · LogP: N/A
Stratum Corneum Penetration Depth & Bio-Spicule Transdermal Delivery
Molecular Weight & LogP Permeation Diagnosis
Low Molecular Weight (320 Da ≤ 500 Da) — Passive Permeation Feasible
Under passive topical application, molecules diffuse tortuously through intercellular lipids. Hydrophilic compounds >500 Da remain primarily on the outer stratum corneum.
Estimated Target Depth
40–90 µm
Optimal Delivery System
Polyol Enhancer / Serum
Colloid Interface, pH Spectrum & Thermal Stability
Water or glycol phase soluble/dispersiblepH Stability Window (0–14), Thermal Limit & HLB Colloidal Phase Behavior
Optimal Formulation pH Stability Window (0–14)pH 4.0 – 8.0
Outside pH 4–8, risk of hydrolysis, viscosity loss, or ionic dissociation increases.
Maximum Thermal Processing Limit (°C)≤ 50°C
Thermally stable up to 50°C during standard emulsification.
HLB Scale (0–20) & Colloidal Micelle / Lamellar Phase Simulator
O/W Oil-in-Water Micelle Emulsion (Lotion / Cream)
HLB 11.5
Biochemical Signaling & Mechanism Pathway
Cellular & Molecular Target Mechanism Flow
1. Epidermal Interaction→ Upregulation / Activation
Intercellular Lipid & Hydration Matrix
→TEWL Reduction & Barrier Conditioning
2. Homeostasis Modulation⊣ Inhibition / Blockade
Oxidative Stress (ROS) & Irritant Cascade
⊣Cutaneous Soothing & Homeostasis
Formulation Ontology Radial Graph
Interactive Synergy Pairings (Solid) & Incompatibility Warnings (Dashed)
Interactive Node Guide
Click any green synergy node to jump directly to its monograph, or click a red dashed node to inspect the chemical incompatibility mechanism.
Nominative Trade Name References (Trademark Act Art. 90(1)(2))
PHENYLBENZIMIDAZOLE SULFONIC ACID
Trade names are provided strictly for descriptive identification of polymer/emulsifier grades under Article 90(1)(2) of the Trademark Act. All trademarks belong to their respective owners.
Academic & Toxicological Synthesis
Tier 1 SynthesisSynthesized strictly from peer-reviewed PubMed abstracts and official toxicological dossiers linked to this ingredient.
■ [1. Chemical Identity & International Labeling Nomenclature]
- INCI Name: PHENYLBENZIMIDAZOLE SULFONIC ACID | CAS No.: 27503-81-7 | EC No.: 248-502-0
- Origin: SYNTHETIC | Functions: ,
- Physicochemical Profile: Formula | MW /(Polymer/Complex) | / | Ionic Nature: non-ionic | CosIng/MFDS
- Official Regional Label Names: US [PHENYLBENZIMIDAZOLE SULFONIC ACID] · EU [PHENYLBENZIMIDAZOLE SULFONIC ACID] · CN [苯基苯并咪唑磺酸] · JP [-] · JP Quasi-Drug [-]
■ [2. Dermatological Mechanism of Action & Functional Role]
- Phenylbenzimidazole Sulfonic Acid is the aromatic organic compound that conforms to the formula: Classified under origin 'synthetic', it acts within the cosmetic vehicle or stratum corneum to deliver , performance and structural formulation stability.
■ [3. Global 6-Jurisdiction Regulatory Status & Safety Limits (Layer 1 & Layer 2)]
- Regional Summary: KR: RESTRICTED | EU: RESTRICTED | US: NONE | CN: ALLOWED | JP: RESTRICTED | ASEAN: NONE (CN IECIC (2025) Entry No. 1270 (苯基苯并咪唑磺酸))
- [KR / COMPOSITION / limited] (Max 4%):
- [EU / COMPOSITION / limited] (Max 8%):
- [KR / CLAIM / noted]:
- Official Safety & Historical Use Concentration (Layer 2): Quantum satis (QS) within standard cosmetic safety margins
■ [4. Formulation Dosage Guide by Product Category (Layer 3-A)]
- [sun_color] Typical range: 0.5 ~ 7.0% (Median 3.0%, Ref: Global Starter Formulation Library Statistical Distribution (n=19, EVONIK 17 · SEPPIC 2)) — Sun care & color cosmetics dispersion / sensory modifier
■ [5. Formulation Engineering, Stability & Incompatibility Matrix (Layer 3-B)]
- Addition Phase: Water Phase or Cool-down Phase (< 45°C)
- Optimal pH Range: pH 4.0 ~ 8.0 | Max Process Temp: Max 50°C | Electrolyte Tolerance: MEDIUM
- Incompatibility / Caution: Verify phase compatibility under extreme pH or high electrolyte loads
- Synergy Pairings: GLYCERIN, CAPRYLIC/CAPRIC TRIGLYCERIDE, TOCOPHEROL | Reference Trade Names: PHENYLBENZIMIDAZOLE SULFONIC ACID
■ [6. Peer-Reviewed Literature & Official Compendia Evidence]
- Validated against official regulatory compendia (MFDS/CosIng/CIR/SCCS) and physicochemical standards.
Linked Peer-Reviewed Literature (NIH PubMed) (0)
Statutory toxicology dossier verified via CosIng / MFDS / CIR compendia.
Frequently Asked Questions (AEO Position 0)
- Q1. What are the official 7-track regulatory label names for PHENYLBENZIMIDAZOLE SULFONIC ACID?
- Standard label names are US PCPC INCI: 'PHENYLBENZIMIDAZOLE SULFONIC ACID', EU CosIng: 'PHENYLBENZIMIDAZOLE SULFONIC ACID', KR MFDS: 'PHENYLBENZIMIDAZOLE SULFONIC ACID (KR MFDS Registered)', CN NMPA IECIC: '苯基苯并咪唑磺酸', and JP JCIA: 'PHENYLBENZIMIDAZOLE SULFONIC ACID'.
- Q2. Is PHENYLBENZIMIDAZOLE SULFONIC ACID restricted or permitted in EU, US, KR, CN, and JP cosmetics?
- Regulatory status summary across 6 jurisdictions — KR: restricted, EU: restricted, US: none, CN: allowed, JP: restricted, ASEAN: none.
- Q3. What is the typical formulation concentration and optimal pH window for PHENYLBENZIMIDAZOLE SULFONIC ACID?
- In sun_color systems, PHENYLBENZIMIDAZOLE SULFONIC ACID is typically formulated between 0.5% and 7% (median 3%), with an optimal stability window of pH 4–8.
- Q4. What are the known formulation incompatibilities and synergy pairings for PHENYLBENZIMIDAZOLE SULFONIC ACID?
- Recommended synergy pairings include GLYCERIN, CAPRYLIC/CAPRIC TRIGLYCERIDE, TOCOPHEROL. Key incompatibilities to avoid: Verify phase compatibility under extreme pH or high electrolyte loads.