Description

Phenol, 4,4′-(3,3,5-trimethylcyclohexylidene)bis- (CAS# 129188-99-4) is a high-purity bisphenol derivative with the molecular formula C₂₁H₂₆O₂, widely utilized in advanced polymer synthesis and specialty chemical applications. This compound, also known as Bisphenol TMC or BPTMC, features a unique cyclohexylidene backbone with three methyl substituents, enhancing its thermal stability and reactivity in polycarbonate and epoxy resin formulations. Its structural rigidity makes it an ideal monomer for high-performance materials requiring exceptional mechanical strength, chemical resistance, and UV stability. Packaged under inert conditions to ensure purity and shelf life, this product is rigorously tested via HPLC, GC-MS, and NMR to meet industry standards (≥98% purity). Suitable for R&D and industrial-scale production, it is available in custom quantities with optional analytical certifications.

Properties

• CAS Number: 129188-99-4
• Complexity: 365
• IUPAC Name: 4-[1-(4-hydroxyphenyl)-3,3,5-trimethyl-cyclohexyl]phenol
• InChI: InChI=1S/C21H26O2/c1-15-12-20(2,3)14-21(13-15,16-4-8-18(22)9-5-16)17-6-10-19(23)11-7-17/h4-11,15,22-23H,12-14H2,1-3H3
• InChI Key: UMPGNGRIGSEMTC-UHFFFAOYSA-N
• Exact Mass: 310.193280068
• Molecular Formula: C21H26O2
• Molecular Weight: 310.4
• SMILES: CC1CC(CC(C1)(C2=CC=C(C=C2)O)C3=CC=C(C=C3)O)(C)C
• Topological: 40.5
• Monoisotopic Mass: 310.193280068
• Synonyms: 129188-99-4, Bisphenol TMC, Phenol, 4,4′-(3,3,5-trimethylcyclohexylidene)bis-, 4,4′-(3,3,5-trimethylcyclohexane-1,1-diyl)diphenol, 4-[1-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexyl]phenol, 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, BISP-TMC, BPTMC, MFCD28167155, Hydro Isophorone Bisphenol, SCHEMBL18187, SCHEMBL4826617, DTXSID50881048, BDBM176759, AKOS025287093, FB30802, AS-68282, US9688816, J, Bisphenol TMC 100 microg/mL in Methanol, NS00003456, CAS# 129188-99-4, E79165, Q65619821, 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethyl-cyclohexane, 3,3,5-Trimethyl-1,1-bis-(4-hydroxyphenyl)-cyclohexane, 2~3~,2~3~,2~5~-Trimethyl-2~3~,2~4~,2~5~,2~6~-tetrahydro-2~2~H-[1~1~,2~1~:2~1~,3~1~-terphenyl]-1~4~,3~4~-diol

Bisphenol TMC serves as a critical intermediate in the synthesis of high-temperature-resistant polycarbonates and epoxy resins, particularly for aerospace and automotive coatings. Its sterically hindered structure improves polymer chain mobility, enabling enhanced optical clarity in engineering plastics. Researchers also leverage its phenolic groups for crosslinking in adhesives and composites. Compatible with green chemistry initiatives due to reduced volatility compared to standard bisphenols.

Safety and Hazards

GHS Hazard Statements

• H410 (100%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P273, P391, and P501

Hazard Classes and Categories

• Skin Irrit. 2 (100%)
• Eye Irrit. 2 (100%)
• STOT SE 3 (100%)

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