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C44605

Sigma-Aldrich

3-Chloro-4-hydroxybenzoic acid hemihydrate

98%

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Linear Formula:
ClC6H3(OH)CO21/2H2O
CAS Number:
Molecular Weight:
181.57
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

98%

form

powder

mp

171-173 °C (lit.)

SMILES string

O.OC(=O)c1ccc(O)c(Cl)c1.OC(=O)c2ccc(O)c(Cl)c2

InChI

1S/2C7H5ClO3.H2O/c2*8-5-3-4(7(10)11)1-2-6(5)9;/h2*1-3,9H,(H,10,11);1H2

InChI key

VXRQGICSNYPXAC-UHFFFAOYSA-N

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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X Zhang et al.
Applied and environmental microbiology, 58(11), 3580-3585 (1992-11-01)
To study the anaerobic degradation of the chimera 3-chloro-4-hydroxybenzoate (3-Cl,4-OHB), anaerobic freshwater sediment samples from the vicinity of Athens, Ga., were adapted for the transformation of 4-hydroxybenzoate (4-OHB), 3-chlorobenzoate (3-CB), 2-chlorophenol (2-CP), and 2,4-dichlorophenol (2,4-DCP). In nonadapted samples, both 4-OHB
R A Sanford et al.
Applied and environmental microbiology, 62(10), 3800-3808 (1996-10-01)
Strain Co23, an anaerobic spore-forming microorganism, was enriched and isolated from a compost soil on the basis of its ability to grow with 2,3-dichlorophenol (DCP) as its electron acceptor, ortho chlorines were removed from polysubstituted phenols but not from monohalophenols.
R H Felton et al.
Biochemistry, 23(17), 3955-3959 (1984-08-14)
Solvent proton nuclear magnetic dispersion studies at 25, 100, and 300 MHz have been performed on protocatechuate 3,4-dioxygenase (PCD) and its complexes with 3-chloro-4-hydroxybenzoate and 3-fluoro-4-hydroxybenzoate. Longitudinal and transverse relaxation rates were measured for these compounds and for the apoenzyme.
T Mester et al.
Applied and environmental microbiology, 63(5), 1987-1994 (1997-05-01)
Aryl metabolites are known to have an important role in the ligninolytic system of white rot fungi. The addition of known precursors and aromatic acids representing lignin degradation products stimulated the production of aryl metabolites (veratryl alcohol, veratraldehyde, p-anisaldehyde, and
F E Löffler et al.
Applied and environmental microbiology, 65(9), 4049-4056 (1999-09-03)
Measurements of the hydrogen consumption threshold and the tracking of electrons transferred to the chlorinated electron acceptor (f(e)) reliably detected chlororespiratory physiology in both mixed cultures and pure cultures capable of using tetrachloroethene, cis-1, 2-dichloroethene, vinyl chloride, 2-chlorophenol, 3-chlorobenzoate, 3-chloro-4-hydroxybenzoate

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