87-56-9

Basic information

• Product Name: Mucochloric acid
• Synonyms: (2E)-2,3-Dichloro-4-oxo-2-butenoic acid;(z)-2,3-dichloro-4-oxo-2-butenoicacid;(z)-dichloro-4-oxomalealdehydicacid;(z)-malealdehydicaci;2,3-dichloro-3-formyl-acrylicaci;2-Butenoic acid, 2,3-dichlor-4-oxo-, (Z)-;2-Butenoic acid, 2,3-dichloro-4-oxo-, (Z)-;2-Butenoicacid,2,3-dichloro-4-oxo-,(Z)-
• CAS NO: 87-56-9
• Molecular Formula: C₄H₂Cl₂O₃
• Molecular Weight: 168.96
• EINECS: 201-752-4
• Product Categories: Intermediates;Mutagenesis Research Chemicals
• Mol File: 87-56-9.mol
• Article Data: 1

Chemical Properties

• Melting Point: 125-128 °C(lit.)
• Boiling Point: 238.75°C (rough estimate)
• Flash Point: 212 °F
• Appearance: White to light beige/Crystalline Powder
• Density: 1.85
• Vapor Pressure: 0.00186mmHg at 25°C
• Refractive Index: 1.4730 (estimate)
• Storage Temp.: Store below +30°C.
• Solubility: 27g/l
• PKA: 0.28±0.44(Predicted)
• Water Solubility: SOLUBLE IN HOT WATER
• Merck: 14,6297
• BRN: 1705641
• CAS DataBase Reference: Mucochloric acid(CAS DataBase Reference)
• NIST Chemistry Reference: Mucochloric acid(87-56-9)
• EPA Substance Registry System: Mucochloric acid(87-56-9)

Safety Data

• Hazard Codes: T,C
• Statements: 25-34-37-42/43
• Safety Statements: 26-36/37/39-45-22
• RIDADR: UN 2923 8/PG 3
• WGK Germany: 2
• RTECS: AS7700000
• TSCA: Yes
• HazardClass: 8
• PackingGroup: III
• Hazardous Substances Data: 87-56-9(Hazardous Substances Data)

Usage

Chemical Properties

WHITE TO LIGHT BEIGE CRYSTALLINE POWDER

Uses

Mucochloric Acid is an intermediate product of the herbicide Burex that can cause poisioning and skin damage upon exposure. Mucochloric Acid is also a chlorine disinfection byproduct in drinking water with mutagenic activity.

Safety Profile

Poison by ingestion. Moderate skin and severe eye irritant. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of Cl-.

Purification Methods

Crystallise the acid twice from water (charcoal). [Beilstein 3 IV 1720.]

InChI:InChI=1/C4H2Cl2O3/c5-2(1-7)3(6)4(8)9/h1H,(H,8,9)/p-1/b3-2+

Upstream product

• 98-01-1 furfural 
• 88-14-2 2-furanoic acid 
• 7697-37-2 nitric acid 
• 62674-12-8 3,4-dichloro-5H-furan-2-one 
• 69727-40-8 3,4-dichloro-2-furoic acid 
• 7647-01-0 hydrogenchloride 
• 95-50-1 1,2-dichloro-benzene 

Downstream Products

• 23066-93-5 3,4-dichloro-5-methoxy-2-(5H)furanone 
• 86901-13-5 6,7-dichloro-2,2-dimethyl-5-oxo-2,3,5,7a-tetrahydro-pyrrolo[2,1-b]thiazole-3-carboxylic acid methyl ester 
• 74840-47-4 5-chloro-2-methyl-4-pyrimidinecarboxylic acid 
• 6684-16-8 N-[2-chloro-3-(phenylamino)-2-propenylidene]-benzenamine monohydrochloride 
• 5428-89-7 5-chloropyrimidin-2-amine 
• 933-76-6 4,5-dichloro-2-methyl-3(2H)-pyridazinone 
• 64-18-6 formic acid 
• 13167-36-7 2,3-dichloro-acrylic acid 
• 932-22-9 4,5-dichloro-2H-pyridazin-3-one 
• 21661-16-5 3-chloro-2-(4-methoxy-phenoxy)-4-oxo-crotonic acid 
• 131139-75-8 2-anilino-3-chloro-4-phenylimino-crotonic acid 
• 20030-09-5 3,4-dichloro-5-(2-oxo-2-phenethyl)-5H-furan-2-one 
• 118898-48-9 2,3-dichloro-4-oxo-cis-crotonic acid benzyl ester 
• 53148-33-7 3-chloro-4-oxo-2-phenoxy-crotonic acid 

Relevant articles and documents

Ozone initiated oxidation of 1,2-dichlorobenzene catalyzed by manganese loaded gamma alumina and silica

The ozone-initiated oxidation of 1,2-dichlorobenzene catalysed by manganese supported on metal oxide (γ-Al2O3 and SiO2) at ambient temperature and pressure conditions is reported in this study. Wet impregnation method was used to synthesise various percentages of Mn loading on γ-Al2O3 and SiO2 supports. The catalysts were characterised by FT-IR, SEM, EDX, TEM, ICP-OES, BET and XRD techniques. All the reactions were conducted in an impinger glass reactor using 25 mL pure 1,2-dichlorobenzene and 0.25 g of the catalysts. The reaction products were characterised by GC–MS and FT-IR for quantitative and qualitative identification of the products. The 2.5, 5, 7.5 and 10 % of Mn impregnated on γ-Al2O3 and SiO2 were found to be more active than γ-Al2O3 and SiO2 supports. The 5 % Mn/SiO2 catalyst was found to be the most active catalyst in the ozonation reaction of 1,2-dichlorobenzene with a percentage conversion of 44 % and percentage selectivity of 88 % towards the main product mucochloric acid. Whereas, 5 % Mn/γ-Al2O3 catalyst resulted in the percentage conversion of 40 % and percentage selectivity of 86 % towards the main product mucochloric acid. The activity of the catalysts is attributed to manganese loaded on γ-Al2O3 and SiO2 supports.