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.
4-Hydroxybenzaldehyde
1. Basic Product Information
Product Name: 4-Hydroxybenzaldehyde
CAS Number: 123-08-0
Molecular Formula: C7H6O2
Molecular Weight: 122.12
Synonyms: p-Hydroxybenzaldehyde, 4-Formylphenol
Product Category: Fine aromatic chemical, pharmaceutical intermediate, spice raw material, dye intermediate, cosmetic additive
2. Physical and Chemical Properties
Physical Indicators
- Appearance: White to pale yellow crystalline powder
- Odor: Slight aromatic phenolic scent
- Solubility: Soluble in ethanol, methanol, ether, acetone and hot water; slightly soluble in cold water; insoluble in aliphatic hydrocarbons
- Melting Point: 115–118 °C
- Boiling Point: 284 °C (760 mmHg)
- Density (20 °C): 1.129 g/cm3
- Hygroscopicity: Non-hygroscopic under sealed dry storage
- Aqueous Stability: Stable in neutral and weakly acidic environments; prone to oxidation and discoloration under alkaline, light or heated conditions
Chemical Characteristics
- Molecular Structure: Benzene ring with para-positioned hydroxyl and aldehyde functional groups
- Core Functional Mechanism: Dual reactive groups enable condensation, oxidation, reduction and coupling reactions; serves as key skeleton builder for pharmaceuticals and flavors
- Photostability: Light-sensitive; long-term UV irradiation accelerates oxidation and darkens the product
- Thermal Stability: Stable below 100 °C; high-temperature decomposition releases irritant phenolic and aldehyde fumes
- Chemical Compatibility: Compatible with neutral organic solvents; incompatible with strong oxidants, concentrated strong alkalis and heavy metal salts
3. Main Application Fields
- Core Application: Pharmaceutical Synthetic Intermediate
Raw material for producing antihypertensive drugs, antibacterial agents, anti-inflammatory medicines and cephalosporin side chains - Fragrance & Flavor Intermediate
Precursor for synthesizing vanillin, raspberry ketone and other edible & daily fragrances - Dye & Pigment Raw Material
Coupling component for manufacturing acid dyes, azo pigments and textile colorants - Cosmetic Functional Raw Material
Antioxidant and whitening auxiliary used in skincare formulations - Laboratory Organic Synthesis Reagent
Substrate for condensation reaction and chiral compound preparation
4. Platform Category & Product Group Guidance
1) Domestic B2B Platform Category
Recommended Path: Organic Intermediates / Organic Intermediates
Reason: Multi-purpose aromatic fine chemical widely used in pharmacy, flavor and dye industries
2) English Product Group Dropdown Options
Recommended Selection: Basic Organic Chemicals
Do NOT select Pharmaceutical Chemicals exclusively; it is universal industrial synthetic raw material
3. Standard Foreign Trade Packaging Specification
1kg sealed plastic bag for lab test samples; 25kg PE-lined fiber drum for bulk factory orders; light-proof sealed packaging available
5. Quality Specification Table
| Test Item | Standard Requirement |
| CAS Number | 123-08-0 |
| Molecular Formula | C7H6O2 |
| Appearance | Uniform white crystalline powder without dark impurities |
| HPLC Purity | Pharma Grade ≥99.0%, Industrial Grade ≥98.5% |
| Melting Point | 115–118 °C |
| Water Content (KF Method) | ≤0.20% |
| Heavy Metals (Pb) | ≤10 ppm |
| Ash Content | ≤0.05% |
| Standard Storage Package | Light-proof sealed PE lined fiber drum, dry warehouse storage |
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