2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol

C15H24O2

CAS723-38-6
GHS05 Gefahrensymbol: Ätzend – Ätzwirkung
GHS07 Gefahrensymbol: Gesundheitsschädlich/Reizend – Ausrufezeichen
GHS09 Gefahrensymbol: Umweltgefährlich – Umwelt
Danger

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Identification

CAS Number
723-38-6
EC Number
400-530-6
UN Number
3077
Index Number
604-027-00-4
PubChem CID
5463755

Physical-chemical properties

Molecular Formula
C15H24O2
Molar Mass
236.35 g/mol
IUPAC Name
2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol

Chemical Identifiers

InChI
InChI=1S/C15H24O2/c1-10-7-13(17)11(8-12(10)16)15(5,6)9-14(2,3)4/h7-8,16-17H,9H2,1-6H3
InChI Key
BSJQLOWJGYMBFP-UHFFFAOYSA-N

Overview

2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol (CAS 723-38-6) is an alkylated hydroquinone derivative with antioxidant properties and high molecular stability. This specialized phenolic compound, with the molecular formula C15H24O2 and molecular weight of 236.35 g/mol, belongs to the family of substituted benzene-1,4-diols. The molecule features a distinctive structure combining a hydroquinone core with bulky alkyl substituents, including a methyl group and a branched 2,4,4-trimethylpentan-2-yl chain. This structural configuration provides enhanced steric hindrance and improved oxidative stability compared to simpler phenolic compounds. The substance exhibits significant safety considerations requiring careful handling protocols. Classified under ADR Class 9 (miscellaneous dangerous goods), it carries a "Danger" signal word with GHS pictograms indicating serious eye damage potential (GHS05), sensitization hazards (GHS07), and environmental concerns (GHS09). The classification includes Eye Dam. 1 for severe eye damage, Skin Sens. 1 for skin sensitization, and Aquatic Chronic 2 for long-term aquatic toxicity. Proper personal protective equipment and containment measures are essential during handling and storage operations. Industrial applications typically focus on specialized antioxidant formulations where superior thermal stability and effectiveness are required. The compound finds use in high-performance polymer stabilization systems and specialized rubber applications where conventional antioxidants may prove insufficient. Unlike simpler aromatic compounds such as 1-(4-aminophenyl)-N-methylmethanesulfonamide hydrochloride, this alkylated derivative offers enhanced compatibility with hydrophobic matrices and improved migration resistance. OYSI maintains reliable supply chains for this specialized chemical intermediate, supporting European industrial customers with technical-grade material suitable for demanding applications.

Safety & Classification

Danger
Classification:

Eye Dam. 1; Skin Sens. 1; Aquatic Chronic 2

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H318

Causes serious eye damage.

H317

May cause an allergic skin reaction.

H411

Toxic to aquatic life with long lasting effects.

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

Irritant

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:

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 Number3077
ADR Class9
Packing GroupIII
Tunnel Code-
Proper Shipping Name2-Methyl-5-(1,1,3,3-tetramethylbutyl)hydrochinon
Marine PollutantNo

Frequently Asked Questions

What is 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol?

2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol is an organic chemical compound with the molecular formula C15H24O2 and CAS number 723-38-6. This substance belongs to the family of substituted benzene diols, featuring a complex alkyl substituent chain. With a molecular weight of 236.35 g/mol, it is classified as a hazardous substance requiring careful handling due to its potential for causing eye damage and skin sensitization.

What are the physicochemical properties of 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol?

2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol is a solid organic compound at room temperature with a molecular weight of 236.35 g/mol. As a substituted phenol derivative, it typically exhibits limited water solubility due to its hydrophobic alkyl chain, while being more soluble in organic solvents. The presence of two hydroxyl groups on the benzene ring contributes to its chemical reactivity and potential for hydrogen bonding.

What is 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol used for?

2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol is primarily used as an antioxidant in various industrial applications, particularly in polymer and rubber manufacturing. Its phenolic structure makes it effective at preventing oxidative degradation of materials. The compound may also serve as an intermediate in chemical synthesis processes and as a stabilizer in specialty chemical formulations where antioxidant properties are required.

How to handle 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol safely?

Safe handling of 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol requires appropriate personal protective equipment including safety goggles, chemical-resistant gloves, and protective clothing. Work in well-ventilated areas or under fume extraction to minimize inhalation exposure. Avoid direct skin and eye contact as the substance can cause eye damage and skin sensitization. Ensure proper training on emergency procedures and maintain safety data sheets readily accessible in work areas.

How to store 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol correctly?

Store 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Keep containers tightly sealed to prevent contamination and moisture absorption. Store away from incompatible materials such as strong oxidizing agents and bases. Ensure storage areas are equipped with appropriate spill containment measures and maintain proper inventory management to monitor container integrity and expiration dates.

What to do in case of contact with 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol?

In case of eye contact with 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol, immediately flush with clean water for at least 15 minutes and seek medical attention due to its eye damage potential. For skin contact, remove contaminated clothing and wash affected area thoroughly with soap and water. If respiratory symptoms occur, move to fresh air immediately. Due to its skin sensitization properties, monitor for allergic reactions and consult medical professionals if symptoms persist or worsen.

How to dispose of 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol appropriately?

Dispose of 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol through authorized hazardous waste disposal facilities in accordance with local and European waste regulations. The substance cannot be disposed of in regular waste streams due to its classification as hazardous material. Contact licensed waste management companies specializing in chemical disposal. Ensure proper documentation and tracking of waste disposal activities to maintain regulatory compliance and environmental protection standards.

How to transport 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol?

Transport of 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol must comply with ADR Class 9 (miscellaneous dangerous substances) regulations, Packing Group III. Use appropriate packaging that meets UN specification requirements and ensure proper labeling with hazard pictograms. Shipping documentation must include proper shipping names and hazard classifications. Drivers and handlers should be trained in dangerous goods transportation procedures and emergency response protocols for Class 9 materials.

Is 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol subject to specific regulations?

2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol is regulated under European CLP regulation with classification as Eye Dam. 1, Skin Sens. 1, and Aquatic Chronic 2, requiring Danger signal word and specific pictograms (GHS05, GHS07, GHS09). It is not currently listed as a Substance of Very High Concern (SVHC) under REACH regulation. Users must comply with occupational exposure limits, proper labeling requirements, and safety data sheet provisions according to European chemical legislation.

Where to buy 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol in Europe?

OYSI serves as a reliable European distributor for 2-methyl-5-(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol, offering professional-grade chemical supply services across European markets. As a specialized chemical distributor, OYSI ensures compliance with European regulations and provides comprehensive documentation including safety data sheets and certificates of analysis. Contact OYSI directly for availability, technical specifications, and customized packaging options suited to your specific industrial or research requirements.

Data Sources

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