CAS 50-43-1 corresponds to 2,4,6-trichlorobenzoic acid, which is a white to beige crystalline solid with the molecular formula C ₇ H ∝ Cl ∝ O ₂ and a molecular weight of 225.46. It is mainly used as a synthetic intermediate for pharmaceuticals, insecticides, and fungicides.

Core physical and chemical properties
-Chinese name: 2,4,6-trichlorobenzoic acid
-English name: 2,4,6-trichlorobenzoic acid
-Molecular formula: C ₇ H ∝ Cl ∝ O ₂
-Molecular weight: 225.46
-Melting point: 160-164 ° C
-Appearance: White to beige (or light yellow/light orange) crystalline powder
-Density: Approximately 1.56-1.64 g/cm ³ (estimated/measured difference)
-Boiling point: approximately 329.7 ° C (predicted at atmospheric pressure)
-Acidity coefficient (pKa): approximately 1.40
-Storage conditions: Sealed, dark, dry storage

Main applications and synthesis
1. Application field: Organic synthesis intermediates widely used in the production of pharmaceuticals, insecticides, and fungicides.
2. Synthesis pathway: Usually using 1,3,5-trichlorobenzene as raw material, intermediate is generated through Friedel Crafts acylation reaction, then oxidized and acidified.

Safety and hazard information
-GHS classification: Skin irritation (category 2), Eye irritation (category 2A), Specific target organ toxicity (single exposure, category 3)
-Signal word: Warning
-Danger statement: H315 (causing skin irritation), H319 (causing severe eye irritation), H335 (may cause respiratory irritation)
-Protective advice: Wear dust masks (N95), goggles, and gloves to avoid inhaling dust or contact with skin and eyes.

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2,4,6-trichlorobenzoic acid CAS 50-43-1
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