ChemicalBook--->CAS DataBase List--->87-56-9

87-56-9

87-56-9 Structure

87-56-9 Structure
IdentificationMore
[Name]

Mucochloric acid
[CAS]

87-56-9
[Synonyms]

2,3-DICHLORO-4-OXO-2-BUTENOIC ACID
2,3-DICHLOROMALEALDEHYDIC ACID
2,3-DICHLOROMALEIC ALDEHYDE ACID
A,B-DICHLORO-B-FORMYLACRYLIC ACID
Dichloroformylacrylic acid
DICHLOROMALEALDEHYDIC ACID
DICHLOROMALEALDEHYDRIC ACID
MUCOCHLORIC ACID
(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)-
3,4-Dichloro-2-hydroxycrotonolactone
3,4-Dichloro-2-hydroxycrotonolactonic acid
3,4-dichloro-2-hydroxycrotonolactonicacid
3-dichloro-4-oxo-(z)-2-butenoicaci
[EINECS(EC#)]

201-752-4
[Molecular Formula]

C4H2Cl2O3
[MDL Number]

MFCD00006966
[Molecular Weight]

168.96
[MOL File]

87-56-9.mol
Chemical PropertiesBack Directory
[Appearance]

WHITE TO LIGHT BEIGE CRYSTALLINE POWDER
[Melting point ]

125-128 °C(lit.)
[Boiling point ]

238.75°C (rough estimate)
[density ]

1.85
[refractive index ]

1.4730 (estimate)
[Fp ]

212 °F
[storage temp. ]

Store below +30°C.
[solubility ]

27g/l
[form ]

Crystalline Powder
[pka]

0.28±0.44(Predicted)
[color ]

White to light beige
[PH]

2.4 (27g/l, H2O, 20℃)
[Water Solubility ]

SOLUBLE IN HOT WATER
[Merck ]

14,6297
[BRN ]

1705641
[InChI]

1S/C4H2Cl2O3/c5-2(1-7)3(6)4(8)9/h1H,(H,8,9)/b3-2+
[InChIKey]

LUMLZKVIXLWTCI-NSCUHMNNSA-N
[SMILES]

OC(=O)\C(Cl)=C(/Cl)C=O
[Surface tension]

72.58mN/m at 998g/L and 21℃
[CAS DataBase Reference]

87-56-9(CAS DataBase Reference)
[NIST Chemistry Reference]

Mucochloric acid(87-56-9)
[EPA Substance Registry System]

87-56-9(EPA Substance)
Safety DataBack Directory
[Symbol(GHS) ]

Corrosion (GHS05)Skull and Crossbones (GHS06)
GHS05,GHS06
[Signal word ]

Danger
[Hazard statements ]

H301-H314-H335
[Precautionary statements ]

P260-P270-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338
[Hazard Codes ]

T,C
[Risk Statements ]

R25:Toxic if swallowed.
R34:Causes burns.
R37:Irritating to the respiratory system.
R42/43:May cause sensitization by inhalation and skin contact .
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S22:Do not breathe dust .
[RIDADR ]

UN 2923 8/PG 3
[WGK Germany ]

2
[RTECS ]

AS7700000
[TSCA ]

Yes
[REACH Registrations]

Active
[HazardClass ]

8
[PackingGroup ]

III
[HS Code ]

29183000
[Storage Class]

6.1B - Non-combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
[Hazard Classifications]

Acute Tox. 3 Oral
Eye Dam. 1
Skin Corr. 1B
STOT SE 3
[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-.
[Hazardous Substances Data]

87-56-9(Hazardous Substances Data)
[Toxicity]

LD50 in rats: 0.5-1.0 g/kg orally; 10-25 mg/kg i.p., Fassett in Industrial Hygiene and Toxicology vol. II, F. A. Patty, Ed. (Interscience, New York, 2nd ed., 1962) p 1977
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Manganese dioxide
[Preparation Products]

2,3-Dichloro-5,8-dihydroxy-1,4-naphthoquinone-->Pyridaben-->2-Aminopyrimidine-->4-Chloro-2-(tetrahydro-2H-pyran-2-yl)-5-hydroxypyridazin-3(2H)-one-->5-Chloro-2-methoxypyrimidine-4-carboxylic acid-->5-Chloro-2-(methylsulfonyl)pyrimidine-->5-Chloro-2-(methylsulfonyl)pyrimidine-4-carboxylic acid-->4,5-Dichloro-3(2H)-pyridazinone-->Pyridaben E.C.-->Pyridaben W.P.-->2-Chloromalonaldehyde-->5-Chloropyrimidin-2-amine-->1-Phenyl-4,5-dichloro-6-pyridazone-->5-Chloro-2-(methylthio)pyrimidine-4-carboxylic acid-->2-Butenedioic acid, 2,3-dichloro-, (2Z)--->2-(tert-Butyl)-4,5-dichloro-2,3-dihydropyridazin-3-one
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

2,3-Dichloro-4-oxo-2-butenoic acid(87-56-9).msds
Hazard InformationBack Directory
[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.
[Purification Methods]

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

Mucochloric acid(87-56-9)1HNMR
Mucochloric acid(87-56-9)FT-IR
Mucochloric acid(87-56-9)IR
Mucochloric acid(87-56-9)Raman
Well-known Reagent Company Product InformationBack Directory
[Acros Organics]

Mucochloric acid, 99%(87-56-9)
[Alfa Aesar]

Mucochloric acid, 99% (dry wt.), water <4.0%(87-56-9)
[Sigma Aldrich]

87-56-9(sigmaaldrich)
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