Description

Stearaldehyde is a high-purity, long-chain aliphatic aldehyde with the CAS number 638-66-4. This compound serves as a versatile and critical building block in organic synthesis, valued for its ability to introduce the stearyl (C18) chain into target molecules. It is essential for manufacturers in the fragrance, pharmaceutical, and specialty chemical industries seeking to produce surfactants, lubricant additives, and polymer intermediates.

Application

• Fragrance & Flavor Intermediates: Used as a key precursor in the synthesis of musk compounds and other long-chain aroma chemicals.
• Pharmaceutical Synthesis: Acts as a building block for creating lipid-based drug delivery systems and active pharmaceutical ingredients (APIs).
• Surfactant & Emulsifier Production: A crucial raw material for manufacturing non-ionic surfactants and emulsifying agents.
• Lubricant & Fuel Additives: Employed in the synthesis of additives that improve viscosity and anti-wear properties.
• Polymer & Resin Modification: Used to introduce hydrophobic alkyl chains into polymers, enhancing their properties.
• Organic Synthesis & Research: A valuable reagent in academic and industrial laboratories for aldol condensations and reductive amination reactions.

Basic Information

Item	Detail
Product Name	Stearaldehyde
CAS No.	638-66-4
Molecular Formula	C₁₈H₃₆O
Molecular Weight	268.48 g/mol
Synonyms	Octadecanal; n-Octadecanal; Stearic Aldehyde; n-Stearaldehyde; 1-Octadecanal; C18 Aldehyde; Aldehyde C18; Stearyl Aldehyde
EINECS	211-354-4

Quality Control

Our Stearaldehyde is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing, including Gas Chromatography (GC) and Infrared Spectroscopy (IR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen) in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its sensitivity to oxidation, minimize headspace and avoid prolonged exposure to air.

Specification

Item	Specification
Appearance	White to off-white solid / waxy flakes
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Melting Point	Approx. 38 - 42 °C

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.