4-methylbenzaldehyde

C8H8O

CAS104-87-0

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Identification

CAS Number
104-87-0
EC Number
203-246-9
UN Number
PubChem CID
7725

Physical-chemical properties

Molecular Formula
C8H8O
Molar Mass
120.15 g/mol
IUPAC Name
4-methylbenzaldehyde

Chemical Identifiers

InChI
InChI=1S/C8H8O/c1-7-2-4-8(6-9)5-3-7/h2-6H,1H3
InChI Key
FXLOVSHXALFLKQ-UHFFFAOYSA-N

Overview

4-methylbenzaldehyde (CAS 104-87-0) is an aromatic aldehyde compound with a characteristic sweet, almond-like odor and excellent solubility properties. This organic compound, also known as para-tolualdehyde, belongs to the benzaldehyde family and serves as a crucial intermediate in various industrial chemical processes. With its molecular formula C8H8O and molecular weight of 120.15 g/mol, 4-methylbenzaldehyde appears as a colorless to pale yellow liquid under standard conditions. The compound features a benzene ring substituted with both an aldehyde group and a methyl group in the para position, giving it distinctive chemical reactivity patterns that make it valuable for synthetic applications. From a safety perspective, 4-methylbenzaldehyde presents relatively low hazard concerns, as evidenced by the absence of GHS pictograms and signal words in its classification. However, standard laboratory safety protocols should always be observed when handling this chemical, including appropriate ventilation and personal protective equipment. The compound exhibits good thermal stability and can be stored under normal warehouse conditions when properly sealed to prevent oxidation. In industrial applications, 4-methylbenzaldehyde finds extensive use in the pharmaceutical industry as an intermediate for active pharmaceutical ingredients, particularly in the synthesis of various therapeutic compounds. The fragrance and flavor industry also utilizes this compound for creating aromatic profiles in perfumes, cosmetics, and food additives. Additionally, it serves as a building block in specialty chemical manufacturing, where its aldehyde functionality enables condensation reactions and other synthetic transformations. OYSI maintains reliable supply chains for 4-methylbenzaldehyde to support European industrial customers across pharmaceutical, fragrance, and specialty chemical sectors.

Safety & Classification

No Hazard Classification

This substance is not classified as hazardous according to CLP Regulation (EC) No 1272/2008.

Frequently Asked Questions

What is 4-methylbenzaldehyde?

4-methylbenzaldehyde is an aromatic aldehyde compound with the molecular formula C8H8O and CAS number 104-87-0. It consists of a benzene ring substituted with both a methyl group and an aldehyde functional group in the para position. With a molecular weight of 120.15 g/mol, this organic compound is commonly known as para-tolualdehyde or p-tolualdehyde in industrial applications.

What are the physicochemical properties of 4-methylbenzaldehyde?

4-methylbenzaldehyde is a colorless to pale yellow liquid at room temperature with a characteristic sweet, almond-like aromatic odor. It has a boiling point of approximately 204°C and is sparingly soluble in water but readily soluble in organic solvents such as ethanol, ether, and benzene. The compound exhibits typical aldehyde reactivity and can undergo oxidation, reduction, and condensation reactions.

What is 4-methylbenzaldehyde used for?

4-methylbenzaldehyde is primarily used as an intermediate in organic synthesis for pharmaceutical and fine chemical manufacturing. It serves as a key building block in the production of various drugs, agrochemicals, and specialty chemicals. The compound is also utilized in the fragrance industry due to its pleasant aromatic properties and in the synthesis of dyes, resins, and other organic compounds requiring aromatic aldehyde functionality.

How to handle 4-methylbenzaldehyde safely?

4-methylbenzaldehyde should be handled in well-ventilated areas with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Although it has no specific GHS classification, standard laboratory safety practices should be followed. Avoid direct skin and eye contact, and prevent inhalation of vapors. Use in fume hoods when possible and ensure proper ventilation to minimize exposure risks.

How to store 4-methylbenzaldehyde correctly?

4-methylbenzaldehyde should be stored in tightly sealed containers in a cool, dry, and well-ventilated area away from direct sunlight and heat sources. Keep containers upright and protect from physical damage. Store separately from strong oxidizing agents and bases to prevent unwanted reactions. Maintain storage temperatures below 25°C and ensure proper labeling and inventory management for optimal product stability.

What to do in case of contact with 4-methylbenzaldehyde?

In case of skin contact with 4-methylbenzaldehyde, immediately wash the affected area with plenty of soap and water for at least 15 minutes. For eye contact, flush thoroughly with clean water for 15 minutes and seek medical attention if irritation persists. If inhaled, move to fresh air immediately. Remove contaminated clothing and wash before reuse. Seek medical advice if symptoms develop or persist.

How to dispose of 4-methylbenzaldehyde appropriately?

4-methylbenzaldehyde waste must be disposed of according to local and national hazardous waste regulations. Do not pour down drains or release into the environment. Contact licensed waste disposal companies for proper treatment and disposal. Small quantities may be suitable for incineration at authorized facilities. Always consult local environmental authorities for specific disposal requirements and maintain proper waste documentation and tracking.

How to transport 4-methylbenzaldehyde?

4-methylbenzaldehyde transport should follow general chemical shipping guidelines as no specific ADR classification is assigned. Use appropriate packaging materials compatible with organic chemicals and ensure containers are properly sealed and labeled. Follow standard dangerous goods documentation procedures and comply with carrier-specific requirements. Protect packages from damage during transit and maintain proper temperature conditions to prevent product degradation.

Is 4-methylbenzaldehyde subject to specific regulations?

4-methylbenzaldehyde is subject to standard REACH registration requirements in the European Union for commercial use. It is not classified as a Substance of Very High Concern (SVHC) and has no specific GHS hazard classification. However, it must comply with general chemical safety regulations, workplace exposure limits, and environmental protection standards. Users should maintain safety data sheets and follow good manufacturing practices.

Where to buy 4-methylbenzaldehyde in Europe?

4-methylbenzaldehyde is available through OYSI, a specialized European distributor of technical chemicals serving industrial and research customers. OYSI provides reliable supply chains across Europe with proper documentation and regulatory compliance. Contact OYSI directly for availability, specifications, packaging options, and delivery arrangements. They offer technical support and ensure products meet European quality and safety standards for industrial applications.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.