2-Chlorobenzoic Acid CAS 118-91-2 2-Chloro-Benzoicacid

• CAS No.: 118-91-2
• Formula: C7h5clo2
• EINECS: 204-285-4
• Certification: CCIC, REACH
• Environmental Protection: Yes
• Color: White
• Model NO.: 118-91-2
• Appearance: Powder
• Transport Package: Drums, Bags
• Specification: 99%
• Trademark: DETE
• Origin: China
• Production Capacity: 10000mts/Year

Product Description

 

Product Name:	2-Chlorobenzoic acid
Synonyms:	O-CHLOROBENZOIC ACID;RARECHEM AL BO 0021;2-CBA;2-Chlorbenzoesαure;2-chlorobenzoic;2-chloro-benzoicaci;OCBA;2-Chlorobenzoic Acid Zone Refined (number of passes:20)
CAS:	118-91-2
MF:	C7H5ClO2
MW:	156.57
EINECS:	204-285-4
Product Categories:	carboxylic acid| alkyl chloride;intermediate;Aromatics;acid;Building Blocks;Pyrrolidines;Alpha sort;C;CAlphabetic;CH;Carbonyl Compounds;Carboxylic Acids;Chemical Synthesis;Organic Building Blocks;Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts;Organics;Highly Purified Reagents;Other Categories;Zone Refined Products;C7;Carbonyl Compounds;Carboxylic Acids;Pesticides&Metabolites
Mol File:	118-91-2.mol

Melting point	138-140 °C (lit.)
Boiling point	285 °C
density	1.544
vapor pressure	0.001 hPa (25 °C)
refractive index	1.5812 (estimate)
Fp	173 °C
storage temp.	Store below +30°C.
solubility	cold water: soluble900 part
pka	2.92(at 25ºC)
form	Powder
color	White to off-white
PH	3.4 (0.2g/l, H2O, 20ºC)
Water Solubility	soluble in hot water
Merck	14,2124
BRN	907340
Stability:	Stable, combustible. Incompatible with strong bases, strong oxidizing agents.
InChIKey	IKCLCGXPQILATA-UHFFFAOYSA-N
CAS DataBase Reference	118-91-2(CAS DataBase Reference)
NIST Chemistry Reference	Benzoic acid, 2-chloro-(118-91-2)
EPA Substance Registry System	o-Chlorobenzoic acid (118-91-2)

Production Method

1. Use phthalic anhydride as a raw material for amidation and degradation reactions with sodium hydroxide and ammonia to prepare anthranilic acid, then diazotize with sodium nitrite and hydrochloric acid, and then replace it with cuprous chloride and hydrochloric acid. The crude o-chlorobenzoic acid is refined to obtain the finished product. 3. Obtained by chlorination and hydrolysis of o-chlorotoluene. 2. There are the following two preparation methods. Ortho-chlorotoluene chlorination hydrolysis method Ortho-chlorotoluene is placed in the reactor, irradiated with ultraviolet light, the reaction temperature is 100 ºC, and chlorine gas is introduced to carry out the chlorination reaction, and the depth of the chlorination reaction is increased to generate α, α, α, 2-tetra Chlorotoluene, or o-chlorotoluene as a raw material, chlorination with azobisisobutyronitrile as a catalyst, can also obtain α,α,α,2-tetrachlorotoluene, and then move the above product into the hydrolysis kettle, and add a little acid It is hydrolyzed to generate o-chlorobenzoyl chloride, and 2-chlorobenzoic acid can be obtained if the hydrolysis depth is large. The anthranilic acid diazotization method uses anthranilic acid as the raw material to add hydrochloric acid and sodium nitrite for diazotization, and then add a solution of Cu2Cl2 dissolved in hydrochloric acid to the diazonium solution, stir while adding, and obtain the result after post-treatment O-chlorobenzoic acid.

Use

It is an intermediate of medicines and pesticides. It is mainly used for the preparation of chlorpromazine, Kangyanling, diclofenac and other drugs, as well as dyes and color films.