ChemicalBook > CAS DataBase List > 2,4-Dichlorophenol

2,4-Dichlorophenol

Product Name
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
Formula Weight
163
MOL File
120-83-2.mol
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2,4-Dichlorophenol Property

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)
NIST Chemistry Reference
Phenol, 2,4-dichloro-(120-83-2)
EPA Substance Registry System
2,4-Dichlorophenol (120-83-2)
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Safety

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).
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H302Harmful if swallowed

H311Toxic in contact with skin

H314Causes severe skin burns and eye damage

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
8.03774
Product name
2,4-Dichlorophenol
Purity
for synthesis
Packaging
100g
Price
$38.2
Updated
2024/03/01
Sigma-Aldrich
Product number
PHR2595
Product name
2,4-dichlorophenol
Purity
Pharmaceutical Secondary Standard; Certified Reference Material
Packaging
200MG
Price
$200
Updated
2024/03/01
Sigma-Aldrich
Product number
8.03774
Product name
2,4-Dichlorophenol
Purity
for synthesis
Packaging
500g
Price
$65.6
Updated
2024/03/01
Sigma-Aldrich
Product number
105953
Product name
2,4-Dichlorophenol
Purity
99%
Packaging
5g
Price
$34.1
Updated
2024/03/01
Sigma-Aldrich
Product number
07846
Product name
2,4-Dichlorophenol
Purity
certified reference material, TraceCERT
Packaging
100mg
Price
$142
Updated
2024/03/01
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2,4-Dichlorophenol Chemical Properties,Usage,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

white to beige crystalline solid

Chemical Properties

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

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

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View Lastest Price from 2,4-Dichlorophenol manufacturers

Henan Fengda Chemical Co., Ltd
Product
2,4-Dichlorophenol 120-83-2
Price
US $100.00-1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
g-kg-tons, free sample is available
Release date
2023-12-24
Hebei Yanxi Chemical Co., Ltd.
Product
2,4-Dichlorophenol 120-83-2
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
100tons
Release date
2023-09-21
Hebei Mojin Biotechnology Co., Ltd
Product
2,4-Dichlorophenol 120-83-2
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
50000KG/month
Release date
2023-10-16

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  • 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-DCP
  • 2,4-DICHLORO-1-HYDROXY-BENZENE
  • 4,6-dichlorophenol
  • 2,4-Dichlorophenol &gt
  • 2,4-DichlorophenolSolution,500mg/L,1ml
  • 2,4,-DichlorophenolSolution,1000mg/L,1ml
  • 2,4-Dichlorophenol[forBiochemicalResearch]&gt
  • 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%
  • Triclosan Impurity 2
  • 120-83-2
  • 5017-96-5
  • C6H4CI2O
  • Building Blocks
  • Chlorinated Compounds (Environmental Endocrine Disruptors)
  • Environmental Endocrine Disruptors
  • Organic Building Blocks
  • Phenols
  • Oxygen Compounds