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ChemicalBook >> CAS DataBase List >>2,4-Dichlorophenol

2,4-Dichlorophenol

CAS No.
120-83-2
Chemical Name:
2,4-Dichlorophenol
Synonyms
2,4-DCP;Isobac;a13-00078;NCI-C55345;2,4-Phenol;2,4-Dichlorphenol;2,4-dichloro-pheno;2,4-dlchlorophenol;2,4-DICHLOROPHENOL;4,6-dichlorophenol
CBNumber:
CB4458696
Molecular Formula:
C6H4Cl2O
Molecular Weight:
163
MDL Number:
MFCD00002169
MOL File:
120-83-2.mol
MSDS File:
SDS
Last updated:2024-12-18 14:08:52

2,4-Dichlorophenol Properties

Melting point 42-43 °C(lit.)
Boiling point 209-210 °C(lit.)
Density 1.383
vapor pressure 1.3 hPa (50 °C)
refractive index 1.4430 (estimate)
Flash point 237 °F
storage temp. 2-8°C
solubility methanol: soluble1g in 10ml
pka pK1:7.85 (25°C)
color White to beige
Water Solubility 4.5 g/L (20 ºC)
Merck 14,3072
BRN 742467
Henry's Law Constant 2.88 x 10-6 atm?m3/mol at 20 °C (Sheikheldin et al., 2001) 3.23 x 10-6 atm?m3/mol at 25 °C (estimated, Leuenberger et al., 1985a)
InChIKey HFZWRUODUSTPEG-UHFFFAOYSA-N
LogP 3.25 at 20℃
CAS DataBase Reference 120-83-2(CAS DataBase Reference)
EWG's Food Scores 4
FDA UNII R669TG1950
NIST Chemistry Reference Phenol, 2,4-dichloro-(120-83-2)
EPA Substance Registry System 2,4-Dichlorophenol (120-83-2)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
GHS05,GHS06,GHS09
Signal word  Danger
Hazard statements  H302-H311-H314-H411
Precautionary statements  P260-P273-P280-P301+P312-P303+P361+P353-P305+P351+P338
Hazard Codes  T,N,F
Risk Statements  22-24-34-51/53-39/23/24/25-23/24/25-11-25
Safety Statements  26-36/37/39-45-61-36/37-16-7
RIDADR  UN 2928 6.1/PG 2
WGK Germany  3
RTECS  SK8575000
TSCA  Yes
HazardClass  6.1
PackingGroup  III
HS Code  29081000
Hazardous Substances Data 120-83-2(Hazardous Substances Data)
Toxicity Acute oral LD50 for mice 1,276 mg/kg, rats 580 mg/kg (quoted, RTECS, 1985).
NFPA 704
1
3 0

2,4-Dichlorophenol price More Price(31)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 8.03774 2,4-Dichlorophenol for synthesis 120-83-2 100g $38.2 2024-03-01 Buy
Sigma-Aldrich PHR2595 2,4-dichlorophenol Pharmaceutical Secondary Standard; Certified Reference Material 120-83-2 200MG $200 2024-03-01 Buy
Sigma-Aldrich 8.03774 2,4-Dichlorophenol for synthesis 120-83-2 500g $65.6 2024-03-01 Buy
Sigma-Aldrich 105953 2,4-Dichlorophenol 99% 120-83-2 5g $34.1 2024-03-01 Buy
Sigma-Aldrich 07846 2,4-Dichlorophenol certified reference material, TraceCERT 120-83-2 100mg $142 2024-03-01 Buy
Product number Packaging Price Buy
8.03774 100g $38.2 Buy
PHR2595 200MG $200 Buy
8.03774 500g $65.6 Buy
105953 5g $34.1 Buy
07846 100mg $142 Buy

2,4-Dichlorophenol Chemical Properties,Uses,Production

Description

2,4-DCP is a colorless crystalline solid with acharacteristic odor. Molecular weight=163.00; Boilingpoint=210℃; Freezing/Melting point=45.0℃; Flashpoint=113℃. Hazard Identification (based on NFPA-704M Rating System): Health 1, Flammability 1, Reactivity 0.Slightly soluble in water.

Chemical Properties

2,4-DCP is a colorless crystalline solid with a characteristic odor

Chemical Properties

white to beige crystalline solid

Physical properties

Colorless to yellow crystals with a sweet, musty, or medicinal odor. At 40 °C, the average odor threshold concentration and the lowest concentration at which an odor was detected were 29 and 5.4 μg/L, respectively. Similarly, at 25 °C, the average taste threshold concentration and the lowest concentration at which a taste was detected were 2.5 and 0.98 μg/L, respectively (Young et al., 1996).

Uses

Intermediate in production of herbicidal chlorophenoxy acids such as 2,4- dichlorophenoxyacetic acid

Uses

2,4-Dichlorophenol is a chlorinated derivative of phenol and is used as an intermediate for the preparation of herbicide 2,4-dichlorophenoxyacetic acid (D435680).

Definition

ChEBI: A dichlorophenol that is phenol carrying chloro substituents at positions 2 and 4.

Synthesis Reference(s)

Synthetic Communications, 20, p. 2991, 1990 DOI: 10.1080/00397919008051517

General Description

Colorless crystalline solid with a medicinal odor. Melting point 45°C. Sinks in water. Strong irritant to tissues; toxic by ingestion.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

2,4-Dichlorophenol can react vigorously with oxidizing agents. Can also react with acids or acid fumes. Incompatible with acid chlorides and acid anhydrides.

Health Hazard

Tremors, convulsions, shortness of breath, inhibition of respiratory system.

Safety Profile

Suspected carcinogen with experimental carcinogenic and teratogenic data. Poison by intraperitoneal route. Moderately toxic by ingestion and subcutaneous routes. An experimental teratogen. Mutation data reported. Combustible when exposed to heat or flame. Can react vigorously with oxidizing materials. To fight fre, use alcohol foam, foam, CO2, dry chemical. When heated to decomposition, or on contact with acid or acid fumes, it emits hghly toxic fumes of Cl-. See also CHLOROPHENOLS.

Potential Exposure

2,4-Dichlorophenol is a commercially produced substituted phenol used in the manufacture of industrial and agricultural products; in synthesis of pharmaceuticals. As an intermediate in the chemical industry, 2,4-DCP is utilized as the feedstock for the manufacture of 2,4-dichlorophenoxyacetic acid (2,4-D), and 2,4-D derivatives (germicides, soil sterilants, etc.); certain methyl compounds used in mothproofing, antiseptics and seed disinfectants. 2,4-DCP is also reacted with benzene sulfonyl chloride to produce miticides or further chlorinated to pentachlorophenol, a wood preservative. It is thus a widely used pesticide intermediate. The only group expected to be at risk for high exposure to 2,4-DCP is industrial workers involved in the manufacturing or handling of 2,4-DCP and 2,4-D

First aid

If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seekmedical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Speed in removing material from skinis of extreme importance. Shampoo hair promptly if contaminated. Seek medical attention immediately. If thischemical has been inhaled, remove from exposure, beginrescue breathing (using universal precautions, includingresuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and inducevomiting. Do not make an unconscious person vomit.

Carcinogenicity

In mammalian cells in vitro 2,4-DCP produced chromosomal aberrations and induced unscheduled DNA synthesis; it was negative for sister chromatid exchange in vivo and was mostly negative in bacterial assays.
Oral exposure of pregnant rats to 750mg/kg/day for 10 gestational days induced slightly decreased fetal weight, delayed ossification of sternal and vertebral arches, and some early embryonic deaths.10 Maternal deaths also occurred at this dose, indicating that 2,4-DCP was not selectively toxic to embryos or fetuses. No effects were noted in dams or offspring exposed at 375mg/kg/day.
A threshold limit value (TLV) has not been established for 2,4-dichlorophenol.

Environmental Fate

Biological. In activated sludge, 2.8% mineralized to carbon dioxide after 5 d (Freitag et al., 1985). In freshwater lake sediments, anaerobic reductive dechlorination produced 4-chlorophenol (Kohring et al., 1989). Chloroperoxidase, a fungal enzyme isolated from Caldariomyces fumago, converted 9 to 12% of 2,4-dichlorophenol to 2,4,6-trichlorophenol (Wannstedt et al., 1990). When 2,4-dichlorophenol was statically incubated in the dark at 25 °C with yeast extract and settled domestic wastewater inoculum, significant biodegradation with rapid adaptation was observed. At concentrations of 5 and 10 mg/L, 100 and 99% biodegradation, respectively, were observed after 7 d (Tabak et al., 1981). In activated sludge inoculum, 98.0% COD removal was achieved. The average rate of biodegradation was 10.5 mg COD/g?h (Pitter, 1976).
Surface Water. Hoigné and Bader (1983) reported 2,4-dichlorophenol reacts with ozone at a rate constant of <1,500/M?sec at the pH range of 1.5 to 3.0.
Groundwater. Nielsen et al. (1996) studied the degradation of 2,4-dichlorophenol in a shallow, glaciofluvial, unconfined sandy aquifer in Jutland, Denmark. As part of the in situ microcosm study, a cylinder that was open at the bottom and screened at the top was installed through a cased borehole approximately 5 m below grade. Five liters of water was aerated with atmospheric air to ensure aerobic conditions were maintained. Groundwater was analyzed weekly for approximately 3 months to determine 2,4-dichlorophenol concentrations with time. The experimentally determined first-order biodegradation rate constant and corresponding half-life were 0.20/d and 3.47 d, respectively.
Photolytic. In distilled water, photolysis occurs at a slower rate than in estuarine waters containing humic substances. Photolysis products identified in distilled water were the three isomers of chlorocyclopentadienic acid. The following half-lives were reported for 2,4- dichlorophenol in estuarine water exposed to sunlight and microbes: 0.6 and 2.0 h during summer (24 °C) and winter (10 °C), respectively; in distilled water: 0.8 and 3.0 h during summer and winter, respectively; in poisoned estuarine water: 0.7 and 2.0 h during summer and winter, respectively (Hwang et al., 1986). When titanium dioxide suspended in an aqueous solution was irradiated with UV light (λ = 365 nm), 2,4-dichlorophenol was converted to carbon dioxide at a significant rate (Matthews, 1986). An aqueous solution containing hydrogen peroxide and irradiated by UV light (λ = 296 nm) converted 2,4-dichlorophenol to chlorohydroquinone and 1,4- dihydroquinone (Moza et al., 1988). A carbon dioxide yield of 50.4% was achieved when 2,4- dichlorophenol adsorbed on silica gel was irradiated with UV light (λ >290 nm) for 17 h (Freitag et al., 1985).
Chemical/Physical. 2,4-Dichlorophenol will not hydrolyze to any reasonable extent (Kollig, 1993). Reported second-order rate constants for the reaction of 2,4-dichlorophenol and singlet oxygen in water at 292 K: 7 x 106/M?sec at pH 5.5, 2 x 106/M?sec at pH 6, 1.0 x 105/M?sec at pH 6.65, 1.5 x 106/M?sec at pH 7.0, 7.6 x 105/M?sec at pH 7.9, 1.20 x 104/M?sec at pH 9.0 to 9.6. At pH 8, the half-life of 2,4-dichlorophenol is 62 h (Scully and Hoigné, 1987). In an aqueous phosphate buffer at 27 °C, 2,4-dichlorophenol reacted with singlet oxygen at a rate of 5.1 x 106/M?sec (Tratnyek and Hoigné, 1991). At neutral pH, 2,4-dichlorophenol was completely oxidized by potassium permanganate (2.0 mg/L) after 15 min (quoted, Verschueren, 1983).

storage

Color Code—Blue: Health Hazard/Poison: Storein a secure poison location. Prior to working with 2,4-DCPyou should be trained on its proper handling and storage.Store in tightly closed containers in a refrigerator awayfrom oxidizers, acid, acid fumes, acid chlorides, acid anhydrides, caustics. A regulated, marked area should be established where this chemical is handled, used, or stored incompliance with OSHA Standard 1910.1045.

Shipping

UN2020 Chlorophenols, solid, Hazard Class: 6.1; Labels: 6.1-Poisonous materials

Purification Methods

Crystallise it from pet ether (b 30-40o). Purify it also by repeated zone melting, using a P2O5 guard tube to exclude moisture. It is very hygroscopic when dry. [Beilstein 6 IV 885.]

Incompatibilities

Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, and epoxides. Contact with acids or acid fumes causes decomposition releasing poisonous chlorine gas. Incompatible with caustics, acid anhydrides; acid chlorides. Quickly corrodes aluminum; slowly corrodes zinc, tin, brass, bronze, copper and its alloys. May accumulate static electrical charges, and may cause ignition of its vapors.

Waste Disposal

Dissolve in a combustible solvent and incinerate in a furnace equipped with afterburner and scrubber. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be disposed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≧100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal

108-95-2
106-48-9
120-83-2
Synthesis of 2,4-Dichlorophenol from Phenol
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View Lastest Price from 2,4-Dichlorophenol manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
2,4-Dichlorophenol pictures 2024-12-20 2,4-Dichlorophenol
120-83-2
 US $5.00 / KG 1KG 99% 500mt/year Jinan Finer Chemical Co., Ltd
2,4-Dichlorophenol pictures 2024-11-22 2,4-Dichlorophenol
120-83-2
 US $1.00 / KG 1KG 99% 10 mt Hebei Weibang Biotechnology Co., Ltd
2,4-Dichlorophenol pictures 2024-10-25 2,4-Dichlorophenol
120-83-2
 US $0.00-0.00 / kg 1kg 99% 100tons Hebei Yanxi Chemical Co., Ltd.
DICHLOROPHENOL(2,4-) 1-Hydroxy-2,4-dichlorobenzene 2,4-Dichlorophenol,>85% 2,4-DichlorophenolForSynthesis 2,4-dichlorophenol solution 1,3-DICHLORO-4-HYDROXYBENZENE 2,4-Dichlorphenol 2,4-DICHLOROPHENOL 99+% 3) 2,4-DI CHLORO PHENOL 2,4-Dichlorophenol [for Biochemical Research] 2.4-Dichlorophenol 5g [120-83-2] 2,4-Dichlorophenol (100 mg)F0E1130.99mg/mg(ai) 2,4-Dichlorophenol (100 mg) 2,4-Dichlorophenol in methanol 2,4-Dichlorophenol, 99% 100GR 2,4-DICHLOROPHENOL pract 2,4-dichlorohydroxybenzene 2,4-dichloro-pheno 2,4-dlchlorophenol a13-00078 Isobac NCI-C55345 Phenol,2,4-dichloro- Rcra waste number U081 rcrawastenumberu081 Dichlorophenol, 2,4-DCP 2,4-dichloro phenol(DCP) 2,4-DICHLOROPHENOL, 1X1ML, MEOH, 5000UG/ ML 2,4-DICHLOROPHENOL PESTANAL 2,4-DICHLOROPHENOL, 5000MG, NEAT 2,4-Dichlorophenol, 99% 5GR 2,4-Dichlorophenol Standard 2,4-Dichlorophenol, standard for GC,>=99.5%(GC) 2,4-DICHLOROPHENOL 2,4-DICHLORO-1-HYDROXY-BENZENE 4,6-dichlorophenol 2,4-Dichlorophenol > 2,4-DichlorophenolSolution,500mg/L,1ml 2,4,-DichlorophenolSolution,1000mg/L,1ml 2,4-Dichlorophenol[forBiochemicalResearch]> 2,4-DichlorophenolSolution,100mg/L,1ml 2,4-DichlorophenolSolution,2000mg/L,1ml [phenyl-U-14C6] 2,4-dichlorophenol 2,4-Dichlorophenol,>98% 2,4-Dichlorophenol Solution in Methanol, 100μg/mL 2,4-Phenol 2,4-Dichlorophenol practical grade, 95% 2,4-DCP Triclosan Impurity 2 2,4 Di Chloro Phenol/2,4-Dichlorophenol 2,4-dichlorophenol-cp std 2,4-Dichlorophenol 98% For Synthesis L12451000ME2,4-DichlorophenoL10μg/mLin Meth 120-83-2 5017-96-5 C6H4CI2O Building Blocks Chlorinated Compounds (Environmental Endocrine Disruptors)