The 2,5-Dichlorobenzaldehyde, with the CAS registry number 6361-23-5, is also known as Benzaldehyde, 2,5-dichloro-. It belongs to the product categories of Aromatic Aldehydes & Derivatives (substituted); Aldehydes; Phenyls & Phenyl-Het; Benzaldehyde; C7; Carbonyl Compounds. Its EINECS number is 228-832-1. This chemical's molecular formula is C₇H₄Cl₂O and molecular weight is 175.01. What's more, its systematic name is 2,5-Dichlorobenzaldehyde. This chemical is stable at common pressure and temperature, and it should be sealed and stored in a cool and dry place. Moreover, it should be protected from light. It is mainly used as dyes intermediate.

Physical properties of 2,5-Dichlorobenzaldehyde are: (1)ACD/LogP: 2.873; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.87; (4)ACD/LogD (pH 7.4): 2.87; (5)ACD/BCF (pH 5.5): 89.78; (6)ACD/BCF (pH 7.4): 89.78; (7)ACD/KOC (pH 5.5): 870.32; (8)ACD/KOC (pH 7.4): 870.32; (9)#H bond acceptors: 1; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 1; (12)Polar Surface Area: 17.07 Å²; (13)Index of Refraction: 1.6; (14)Molar Refractivity: 42.796 cm³; (15)Molar Volume: 125.001 cm³; (16)Polarizability: 16.966×10^-24cm³; (17)Surface Tension: 45.2 dyne/cm; (18)Density: 1.4 g/cm³; (19)Flash Point: 96.588 °C; (20)Enthalpy of Vaporization: 46.868 kJ/mol; (21)Boiling Point: 231.999 °C at 760 mmHg; (22)Vapour Pressure: 0.06 mmHg at 25°C.

Preparation: this chemical can be prepared by 2,5-dichloro-benzyl alcohol at the ambient temperature. This reaction will need reagent K₂Cr₂O₇/H₂SO₄ and solvents CH₂Cl₂, H₂O with the reaction time of 4 hours. This reaction will also need catalyst Triethylbenzylammonium chloride. The yield is about 98%.

Uses of 2,5-Dichlorobenzaldehyde: it can be used to produce 1,4-dichloro-2-dichloromethyl-benzene at the temperature of 80 °C. It will need reagent (C₆H₅)₂CCl₂ and solvent cyclohexane with the reaction time of 1 hour. This reaction will also need catalyst FeCl₃. The yield is about 84.5%.

When you are using this chemical, please be cautious about it as the following:
This chemical is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)SMILES: O=Cc1cc(Cl)ccc1Cl
(2)Std. InChI: InChI=1S/C7H4Cl2O/c8-6-1-2-7(9)5(3-6)4-10/h1-4H
(3)Std. InChIKey: BUXHYMZMVMNDMG-UHFFFAOYSA-N