3,4,5-Trichlorophenol TCI T1115

TCI T1115 is 3,4,5-Trichlorophenol, CAS number 609-19-8, a trichlorophenol isomer whose three chlorine atoms sit side by side at positions 3, 4, and 5 relative to the hydroxyl group. In the TCI catalogue it is listed under Non-Heterocyclic Building Blocks. In the laboratory it serves as a starting material for organic synthesis. It also serves as a reference compound for telling chlorophenol isomers apart in analytical and environmental research.

The 3,4,5 substitution pattern makes the molecule symmetrical about the axis passing through the hydroxyl group. Both positions next to the hydroxyl group (positions 2 and 6) remain open. This sets it apart from isomers such as 2,3,6-trichlorophenol, which carry substituents beside the hydroxyl group. These differences influence acidity, solubility, and chromatographic behavior, which is why this isomer is valuable as a comparison standard. The phenolic group can be alkylated or acylated. The ring chlorines also make the compound an interesting model for studying how halogens affect aromatic reactivity.

The 500 mg pack suits Indonesian laboratories that need only very small quantities, for example when preparing standard solutions or running small-scale synthesis trials. University research groups, environmental testing laboratories, and chemistry teaching facilities can order the exact amount they need without holding surplus reagent. This keeps the stock of a specialized chlorinated phenol manageable.

• Organic synthesis starting material: the free phenolic hydroxyl group can be alkylated or acylated, so this building block lets chemists introduce a 3,4,5-trichlorophenyl unit into target molecules.
• Isomer reference standard: because the 3,4,5 pattern differs from other trichlorophenols, the compound is a reliable comparison material for confirming which chlorophenol isomer is present in a sample.
• Analytical method development: its distinct acidity, solubility, and chromatographic behavior help analysts check separation and identification of chlorophenol isomers when developing or validating methods.
• Environmental research: as a reference compound for chlorophenol work, it supports researchers who need to identify and distinguish individual isomers in studies of chlorinated aromatic compounds.
• Studies of halogen effects: the chlorine atoms on the aromatic ring make it a useful model for examining how halogen substituents influence the reactivity of phenols in teaching and research.

• Product code: T1115

Store 3,4,5-Trichlorophenol in its original, tightly closed container, following the conditions stated on the manufacturer's label and safety data sheet. Keep it in a clean, dry, well-ventilated place, away from direct sunlight, heat sources, and incompatible chemicals. Chlorinated phenols require careful handling, so work in a fume hood or a well-ventilated area. Wear nitrile gloves, a laboratory coat, and safety glasses, and avoid contact with skin and eyes and inhalation of dust. Weigh small quantities carefully, since the pack is only 500 mg, and label any prepared solutions clearly. Dispose of waste in accordance with your institution's rules for halogenated organic waste.

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