The IUPAC name of 5-Chlorosalicylic acid is 5-chloro-2-hydroxybenzoic acid. With the CAS registry number 321-14-2, it is also named as 2-Hydroxy-5-chlorobenzoic acid. The product's categories are Fine Chemical & Intermediates; Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts; Amino Acid Derivatives. It is white crystalline powder which is soluble in hot water, insoluble in cold water, easily soluble in alcohol, ether, benzene, chloroform and acetic acid.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 3.42; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.34; (4)ACD/LogD (pH 7.4): 0.27; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1.44; (8)ACD/KOC (pH 7.4): 1.22; (9)#H bond acceptors: 3; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 2; (12)Index of Refraction: 1.629; (13)Molar Refractivity: 39.95 cm³; (14)Molar Volume: 112.3 cm³; (15)Polarizability: 15.84×10^-24 cm³; (16)Surface Tension: 66 dyne/cm; (17)Enthalpy of Vaporization: 59.35 kJ/mol; (18)Vapour Pressure: 0.000132 mmHg at 25°C; (19)Rotatable Bond Count: 1; (20)Tautomer Count: 4; (21)Exact Mass: 171.992722; (22)MonoIsotopic Mass: 171.992722; (23)Topological Polar Surface Area: 57.5; (24)Heavy Atom Count: 11; (25)Complexity: 160.

Preparation of 5-Chlorosalicylic acid: It can be obtained by salicylic acid and chlorine.

Uses of 5-Chlorosalicylic acid: It can be used as intermediate of pesticide, medicine and dyes. It also can react with methanol to get 5-chloro-2-hydroxy-benzoic acid methyl ester. This reaction needs reagent hydrogen chloride.

When you are using this chemical, please be cautious about it as the following:
It is not only harmful by inhalation, in contact with skin and if swallowed, but also irritating to eyes, respiratory system and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing, gloves and eye/face protection.

People can use the following data to convert to the molecule structure.
1. SMILES:Clc1cc(C(=O)O)c(O)cc1
2. InChI:InChI=1/C7H5ClO3/c8-4-1-2-6(9)5(3-4)7(10)11/h1-3,9H,(H,10,11) 
3. InChIKey:NKBASRXWGAGQDP-UHFFFAOYAL

The following are the toxicity data which has been tested.