4-methylphenol

C7H8O

CAS106-44-5
GHS06 Gefahrensymbol: Giftig – Totenkopf mit Knochen
GHS05 Gefahrensymbol: Ätzend – Ätzwirkung
Danger

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Identification

CAS Number
106-44-5
EC Number
203-398-6
UN Number
3455
Index Number
604-004-00-9
PubChem CID
2879

Physical-chemical properties

Molecular Formula
C7H8O
Molar Mass
108.14 g/mol
IUPAC Name
4-methylphenol

Chemical Identifiers

InChI
InChI=1S/C7H8O/c1-6-2-4-7(8)5-3-6/h2-5,8H,1H3
InChI Key
IWDCLRJOBJJRNH-UHFFFAOYSA-N

Overview

4-methylphenol (CAS 106-44-5) is a phenolic compound with antiseptic and disinfectant properties widely used in industrial applications. This organic compound, also known by its IUPAC name 4-methylphenol, belongs to the cresol family and appears as a colorless to pale yellow crystalline solid with a characteristic phenolic odor. With the molecular formula C7H8O and a molar mass of 108.14 g/mol, this substance represents an important intermediate in various chemical manufacturing processes. The compound is classified under EC number 203-398-6 and requires careful handling due to its hazardous properties. From a safety perspective, 4-methylphenol is classified as Acute Tox. 3 and Skin Corr. 1B, carrying the signal word "Danger" and displaying GHS06 and GHS05 pictograms. These classifications indicate acute toxicity risks and corrosive properties that can cause severe skin burns and eye damage. The substance falls under ADR class 6.1, requiring specialized transport conditions and appropriate safety protocols during handling and storage. The compound finds extensive application in the chemical industry, particularly as an intermediate in the production of antioxidants, pharmaceuticals, and specialty chemicals. It serves as a key component in manufacturing processes for disinfectants and preservatives, where its antimicrobial properties are highly valued. Additionally, 4-methylphenol is utilized in the synthesis of various phenolic resins and polymer additives, making it essential for materials science applications. Within the broader phenolic compound family, 4-methylphenol shares certain characteristics with related substances such as 3,5-dimethylphenol, though each compound offers distinct properties and applications tailored to specific industrial needs. OYSI provides reliable access to high-quality 4-methylphenol for European industrial customers requiring this essential chemical intermediate.

Safety & Classification

Danger
Classification:

Acute Tox. 3 *; Acute Tox. 3 *; Skin Corr. 1B

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H311

Toxic in contact with skin.

H301

Toxic if swallowed.

H314

Causes severe skin burns and eye damage.

Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).

First Aid Measures

Skin Contact

Toxic

Measures if substance contacts the skin

First Aid Actions

  • +P302IF ON SKIN:
  • +P352Wash with plenty of water.
  • +P361Take off immediately all contaminated clothing.
  • +P313Get medical advice/attention.

Related hazard statements:

Eye Contact

Harmful

Measures if substance gets into the eyes

First Aid Actions

  • +P305IF IN EYES:
  • +P351Rinse cautiously with water for several minutes.
  • +P338Remove contact lenses, if present and easy to do. Continue rinsing.
  • +P313Get medical advice/attention.

Related hazard statements:

Ingestion

Toxic

Measures if substance is accidentally swallowed

First Aid Actions

  • +P301IF SWALLOWED:
  • +P330Rinse mouth.
  • +P331Do NOT induce vomiting.
  • +P310Immediately call a POISON CENTER/doctor.

Related hazard statements:

General Measures

Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)

First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.

Transport (ADR)

UN Number3455
ADR Class6.1
Packing GroupII
Tunnel CodeD/E
Proper Shipping Namep-Cresol, flüssig*
Marine PollutantNo

Frequently Asked Questions

What is 4-methylphenol?

4-methylphenol is an organic chemical compound with the molecular formula C7H8O and CAS number 106-44-5. It belongs to the phenol family and has a molecular weight of 108.14 g/mol. This aromatic compound is characterized by a methyl group attached to the fourth position of the phenol ring. It is classified as a hazardous substance with acute toxicity and skin corrosion properties, requiring careful handling in industrial applications.

What are the physicochemical properties of 4-methylphenol?

4-methylphenol is typically a crystalline solid at room temperature with a characteristic phenolic odor. It appears as white to pale yellow crystals that can darken upon exposure to light and air. The compound is moderately soluble in water and highly soluble in organic solvents such as ethanol and ether. It has a melting point around 34-36°C and exhibits typical phenolic chemical reactivity including electrophilic aromatic substitution reactions.

What is 4-methylphenol used for?

4-methylphenol is primarily used as an intermediate in the production of antioxidants, pharmaceuticals, and agrochemicals. It serves as a building block for synthesizing butylated hydroxytoluene (BHT), a widely used antioxidant in food and industrial applications. The compound is also utilized in the manufacture of resins, dyes, and disinfectants. In the pharmaceutical industry, it acts as a precursor for various active ingredients and antiseptic formulations.

How to handle 4-methylphenol safely?

4-methylphenol requires strict safety precautions due to its Acute Tox. 3 and Skin Corr. 1B classifications. Essential personal protective equipment includes chemical-resistant gloves, safety goggles, and protective clothing covering all skin areas. Work in well-ventilated areas or under fume hoods to avoid inhalation. Prevent direct skin and eye contact as the substance can cause severe burns. Always wash hands thoroughly after handling and ensure emergency eyewash stations are accessible.

How to store 4-methylphenol correctly?

4-methylphenol should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep containers upright and protected from physical damage. Store separately from strong oxidizing agents, strong bases, and incompatible materials. Maintain storage temperatures below 25°C to prevent degradation. Ensure storage areas have appropriate spill containment measures and are accessible only to trained personnel with proper safety equipment.

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

Skin contact with 4-methylphenol requires immediate removal of contaminated clothing and thorough washing with plenty of water for at least 15 minutes. For eye contact, flush immediately with clean water for 15-20 minutes while holding eyelids open. If inhaled, move the person to fresh air immediately. In case of ingestion, do not induce vomiting and rinse mouth with water. Seek immediate medical attention for all exposure routes due to the substance's corrosive and toxic properties.

How to dispose of 4-methylphenol appropriately?

4-methylphenol disposal must comply with local and national hazardous waste regulations as it is classified as dangerous waste. The substance should never be disposed of down drains or in regular waste streams. Contact licensed hazardous waste disposal companies for proper treatment, which typically involves high-temperature incineration in approved facilities. Small quantities may require neutralization before disposal. Always consult local environmental authorities and follow waste classification codes for phenolic compounds.

How to transport 4-methylphenol?

4-methylphenol is classified under ADR as Class 6.1 (toxic substances), Packing Group II, indicating moderate danger during transport. It requires appropriate UN-approved packaging and labeling with GHS06 (skull and crossbones) and GHS05 (corrosion) pictograms along with 'Danger' signal word. Transportation must comply with ADR regulations for toxic substances, including proper documentation, vehicle placarding, and driver training. Only authorized carriers experienced in hazardous material transport should handle shipments.

Is 4-methylphenol subject to specific regulations?

4-methylphenol is subject to European REACH regulation requiring registration for import/manufacture above 1 ton per year. It falls under CLP regulation with mandatory hazard classification as Acute Tox. 3 and Skin Corr. 1B. The substance is not currently listed as SVHC (Substance of Very High Concern). Industrial users must comply with occupational exposure limits and implement appropriate risk management measures. Some applications may require additional authorizations depending on end-use and concentration levels.

Where to buy 4-methylphenol in Europe?

4-methylphenol is available through OYSI, a specialized European distributor of industrial chemicals. OYSI provides high-quality 4-methylphenol with proper documentation including safety data sheets and certificates of analysis. As an established chemical distributor, OYSI ensures compliance with European regulations including REACH registration and CLP labeling requirements. Contact OYSI directly for availability, technical specifications, packaging options, and delivery throughout Europe for your industrial chemical needs.

Data Sources

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