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Home > Encyclopedia > 3,5-Dichloroaniline

3,5-Dichloroaniline

3,5-Dichloroaniline structure

3,5-Dichloroaniline 

structure
  • CAS No:

    626-43-7

  • Formula:

    C6H5Cl2N

  • Chemical Name:

    3,5-Dichloroaniline

  • Synonyms:

    Benzenamine,3,5-dichloro-;Aniline,3,5-dichloro-;3,5-Dichlorobenzenamine;3,5-Dichloroaniline;3,5-Dichlorophenylamine;3,5-Dichlorolaniline;3,5-DCA

  • Categories:

    Organic Chemistry  >  Amides

Description

white to brown crystals


3,5-dichloroaniline is a dichloroaniline.

3,5-Dichloroaniline Basic Attributes

162.02

162.02

636492

210-948-9

OZ75ZM1S3G

DTXSID7030307

Needles from petroleum ether or dilute alcohol

29214210

Characteristics

26

2.90

dark gray crystalline

1.58 g/cm3

51-53 °C

260 °C @ Press: 741 Torr

>230 °F

1.614

H2O: 0.6 g/L (26 ºC)

0-6°C

Safety Information

II

6.1

UN 3442 6.1/PG 2

3

23/24/25-33-50/53

28-36/37-45-60-61-28A

T,N,Xi

Irritant

Stable under normal shipping and handling conditions. Substance may undergo color change upon exposure to light and air.

P261-P273-P280-P301 + P310-P311-P501

H301-H311-H331-H373-H410

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

|Danger|H301 (99.3%): Toxic if swallowed [Danger Acute toxicity, oral]|P260, P261, P264, P270, P271, P273, P280, P301+P310, P302+P352, P304+P340, P311, P312, P314, P321, P322, P330, P361, P363, P391, P403+P233, P405, and P501|Aggregated GHS information provided by 143 companies from 14 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H301: Toxic if swallowed [Danger Acute toxicity, oral]|P260, P261, P264, P270, P271, P272, P280, P301+P310, P302+P352, P304+P340, P305+P351+P338, P310, P311, P312, P314, P321, P322, P330, P333+P313, P361, P363, P403+P233, P405, and P501|Warning|H371: May cause damage to organs [Warning Specific target organ toxicity, single exposure]|P260, P264, P270, P309+P311, P405, and P501

POSSIBLE EXPOSURE TO HIGHER CONCN (PIPE BREAKAGE, SPLASHING, CLEANING OR REPAIR OF STORAGE TANKS) NECESSITATES USE OF SAFETY GOGGLES, GAS MASK, APRON, & RUBBER GLOVES. /ANILINE/|RESPIRATOR FOR ORGANIC VAPORS, SPLASHPROOF GOGGLES ... /&/ BOOTS. /ANILINE/|Respiratory protection from aniline is as follows: vapor concentration of 100 ppm or less: a chemical cartridge respirator with a full facepiece and an organic vapor cartridge(s) or a gas mask with a chin-style front or back-mounted organic vapor canister or any supplied-air respirator with a full facepiece, helmet or hood, or any self-contained breathing apparatus with a full facepiece; greater than 100 ppm or entry and escape from unknown concentrations: self-contained breathing apparatus with a full facepiece operated in pressure demand or other positive pressure mode or a combination respirator which includes a type C supplied-air respirator with a full facepiece operated in pressure-demand or other positive pressure or continuous-flow mode and an auxiliary self-contained breathing apparatus operated in pressure-demand or other positive pressure mode; escape: any gas mask providing protection against organic vapors or any self-contained breathing apparatus. /Aniline/|Butyl rubber protective clothing ... . /Aniline/

If material on fire or involved in fire: Use dry chemical or carbon dioxide. Cool all affected containers with flooding quantities of water. use water in flooding quantities as fog. /Dichloroaniline/|Personnel protection: ... Wear positive pressure self-contained breathing apparatus when fighting fires involving this material. /Dichloroaniline/

SRP: Local exhaust ventilation should be applied wherever there is an incidence of point source emmissions or dispersion of regulated contaminants in the work area. Ventilation control of the contaminant as close to its point of generation is both the most economical and safest method to minimize personnel exposure to airborne contaminants.|... ANILINE SHOULD BE REACTED IN CLOSED VESSELS AS FAR AS POSSIBLE. IN FACTORIES VENTILATION SHOULD BE SUFFICIENT TO KEEP ATMOSPHERIC ANILINE CONTENT WELL BELOW PERMITTED LEVEL. /ANILINE/|Eating and smoking should not be allowed in areas where liquid aniline is handled, processed, or stored. /Aniline/|Clothing which becomes soaked with aniline should be promptly removed. /Aniline/|For more Preventive Measures (Complete) data for 3,5-DICHLOROANILINE (9 total), please visit the HSDB record page.

/GUIDE 153: SUBSTANCES - TOXIC AND/OR CORROSIVE (COMBUSTIBLE)/ Health: TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution. /Dichloroanilines; Dichloroanilines, liquid; Dichloroanilines, solid/|/GUIDE 153: SUBSTANCES - TOXIC AND/OR CORROSIVE (COMBUSTIBLE)/ Fire or Explosion: Combustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. Those substances designated with a "P" may polymerize explosively when heated or involved in a fire. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form. /Dichloroanilines; Dichloroanilines, liquid; Dichloroanilines, solid/|/GUIDE 153: SUBSTANCES - TOXIC AND/OR CORROSIVE (COMBUSTIBLE)/ Public Safety: CALL Emergency Response Telephone Number ... . As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. Keep unauthorized personnel away. Stay upwind. Keep out of low areas. Ventilate enclosed areas. /Dichloroanilines; Dichloroanilines, liquid; Dichloroanilines, solid/|/GUIDE 153: SUBSTANCES - TOXIC AND/OR CORROSIVE (COMBUSTIBLE)/ Protective Clothing: Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection. Structural firefighters' protective clothing provides limited protection in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible. /Dichloroanilines; Dichloroanilines, liquid; Dichloroanilines, solid/|For more DOT Emergency Guidelines (Complete) data for 3,5-DICHLOROANILINE (8 total), please visit the HSDB record page.

No person may /transport,/ offer or accept a hazardous material for transportation in commerce unless that person is registered in conformance ... and the hazardous material is properly classed, described, packaged, marked, labeled, and in condition for shipment as required or authorized by ... /the hazardous materials regulations (49 CFR 171-177)./|The International Air Transport Association (IATA) Dangerous Goods Regulations are published by the IATA Dangerous Goods Board pursuant to IATA Resolutions 618 and 619 and constitute a manual of industry carrier regulations to be followed by all IATA Member airlines when transporting hazardous materials.|The International Maritime Dangerous Goods Code lays down basic principles for transporting hazardous chemicals. Detailed recommendations for individual substances and a number of recommendations for good practice are included in the classes dealing with such substances. A general index of technical names has also been compiled. This index should always be consulted when attempting to locate the appropriate procedures to be used when shipping any substance or article.

This action promulgates standards of performance for equipment leaks of Volatile Organic Compounds (VOC) in the Synthetic Organic Chemical Manufacturing Industry (SOCMI). The intended effect of these standards is to require all newly constructed, modified, and reconstructed SOCMI process units to use the best demonstrated system of continuous emission reduction for equipment leaks of VOC, considering costs, non air quality health and environmental impact and energy requirements. 3,5-Dichloroaniline is produced, as an intermediate or a final product, by process units covered under this subpart.

Toxicity

3,5-Dichloroaniline's production and use in the production of pesticides, dyes, and pharmaceuticals(1) may result in its release to the environment through various waste streams.

TERRESTRIAL FATE: Based on a classification scheme(1), a Koc value of 309(2) indicates that 3,5-dichloroaniline is expected to have moderate mobility in soil(SRC). When released to soil, 3,5-dichloroaniline may undergo covalent chemical bonding with humic materials, which can result in its chemical alteration to a latent form and tight adsorption. When covalently bound in this latent form, leaching in soil systems is not generally expected to occur. This covalent bonding proceeds in two steps; a rapid and reversible bonding followed by a slower and much less reversible reaction(3). Incubation of 3,5-dichloroaniline in covered beakers containing a sandy loam soil for 14 days yielded the azo compound 3,3',5,5'-tetrachloroazobenzene(4). Volatilization of 3,5-dichloroaniline from moist soil surfaces is expected to be an important fate process(SRC) given an estimated Henry's Law constant of 1.58X10-4 atm-cu m/mole(SRC), using a fragment constant estimation method(5). 3,5-Dichloroaniline is not expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 8.51X10-3 mm Hg(SRC), determined from a fragment constant method(6).|AQUATIC FATE: Based on a classification scheme(1), a Koc value of 309(2) indicates that 3,5-dichloroaniline is expected to adsorb to suspended solids and sediment in water(SRC). 3,5-Dichloroaniline may undergo a covalent chemical bonding with sediment resulting in its chemical alteration to a latent form resulting in stronger adsorption. Using the Closed Bottle screening test, a 0% theoretical BOD(Biological Oxygen Demand) was observed over a 30-day inoculation period using a sewage inoculum(3). Volatilization from water surfaces is expected(4) based upon an estimated Henry's Law constant of 1.58X10-6 atm-cu m/mole(SRC), developed using a fragment constant estimation method(5). Volatilization half-lives for a model river and model lake are 30 days and 219 days, respectively(SRC), using an estimation method(4). However, the volatilization half-life does not take into account the effects of adsorption. A Koc value of 309(2) and 3,5-dichloroaniline's ability to undergo covalent chemical bonding with sediment, suggests that volatilization could be attenuated by adsorption to suspended solids and sediments in water(SRC). This is apparent from the results of two EXAMS model runs, one in which the effect of adsorption was considered, yielding an estimated half-life of 621 days in a model pond 2 m deep, and one in which the effect of adsorption was ignored, yielding an estimated half-life of 321 days in a model pond 2 m deep(6). According to a classification scheme(7), an estimated BCF of 94(4,SRC), from the log Kow(8), suggests the potential for bioconcentration in aquatic organisms is moderate.|ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semi-volatile organic compounds in the atmosphere(1), 3,5-dichloroaniline, which has an estimated vapor pressure of 8.51X10-3 mm Hg at 25 °C(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase 3,5-dichloroaniline is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 7 hours(SRC) from its estimated rate constant of 5.33X10-11 atm-cu m/mole(3).

The rate constant for the vapor-phase reaction of 3,5-dichloroaniline with photochemically-produced hydroxyl radicals has been estimated as 5.33X10-11 cu cm/molecule-sec at 25 °C(SRC) using a structure estimation method(1). This corresponds to an atmospheric half-life of about 7 hours at an atmospheric concentration of 5X10+5 hydroxyl radicals per cu cm(1). 3,5-Dichloroaniline is not expected to undergo hydrolysis in the environment due to the lack of hydrolyzable functional groups(2).

An estimated BCF of 94 was calculated for 3,5-dichloroaniline(SRC), using a log Kow of 2.90(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is moderate.

309.03 L/kg|The Koc of 3,5-dichloroaniline is 309(1). According to a classification scheme(2), this estimated Koc value suggests that 3,5-dichloroaniline is expected to have moderate mobility in soil. However, chloroanilines have been shown to bind strongly to humus or organic matter in soils due to the high reactivity of the aromatic amino group(3,4), suggesting that mobility may be much lower in some soils(SRC).

The Henry's Law constant for 3,5-dichloroaniline is estimated as 1.58X10-6 atm-cu m/mole(SRC) using a fragment constant estimation method(1). This Henry's Law constant indicates that 3,5-dichloroaniline is expected to volatilize from water surfaces(2). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as approximately 30 days(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as approximately 219 days(SRC). However, the volatilization half life does not take into account the effects of adsorption. A Koc value of 309(3), suggests that volatilization could be attenuated by adsorption to suspended solids and sediments in water(SRC). This is apparent from the results of two EXAMS model runs, one in which the effect of adsorption was considered, yielding an estimated half-life of 621 days in a model pond 2 m deep, and one in which the effect of adsorption was ignored, yielding an estimated half-life of 321 days in a model pond 2 m deep(4). 3,5-Dichloroaniline's Henry's Law constant(1) indicates that volatilization from moist soil surfaces may occur(SRC). 3,5-Dichloroaniline is not expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 8.51X10-3 mm Hg(SRC), determined from a fragment constant method(5).

GROUNDWATER: 3,5-Dichloroaniline was detected in 7 out of 8 wells sampled from an industrialized area in Milan, Italy between Nov 1995 to Nov 1996 at concentrations ranging from 0.01 ng/l to 0.055 ng/l(1).|SURFACE WATER: In 1979, 3,5-Dichloroaniline was detected in the Rhine River in 11 of 46 samples at Lobith, Germany (0.19 ppb (max), 0.02 ppb (mean)), 2 of 12 samples at Boven Merwede, Netherlands (0.08 ppb (max), 0.01 ppb (mean)), and 2 of 13 samples at Ijssel, Netherlands (0.18 ppb (max), 0.02 ppb (mean))(1).

Occupational exposure to 3,5-dichloroaniline may occur through inhalation and dermal contact with this compound at workplaces where 3,5-dichloroaniline is produced or used(SRC). The general population may be exposed to 3,5-dichloroaniline via drinking water(1,2) and pesticide, dye, and pharmaceutical products containing 3,5-dichloroaniline(2).

Drug Information

Using hairless rat skin maintained in a Franz diffusion cell, the percutaneous penetration of four aromatic amines: para-chloroaniline, meta-trifluoromethylaniline, dichloro-3,4-aniline and dichloro-3,5-aniline were studied. The purpose of the studies was to determine the permeation parameters (rate of permeation, permeability rat constant) in order to compare the rate of absorption of the four amines. The results show that the four amines penetrate significantly across the skin, but with different rates. 10 h after in vitro application (2 mg/cm sq), the extent of permeation was para-chloroaniline meta-trifluoromethylaniline > dichloro-3,4-aniline > dichloro-3,5-aniline.

Three bacterial strains were isolated from soils adapted to iprodione and identified as Pseudomonas fluorescens, Pseudomonas sp. and Pseudomonas paucimobilis. The first two strains transformed iprodione to N-(3,5-dichlorophenyl)-2,4-dioxoimidazolidine and under restrictive conditions to 3,5-dichlorophenylurea acetic acid; the latter subsequently degraded N-(3,5-dichlorophenyl)-2,4-dioxoimidazolidine to 3,5-dichlorophenylurea acetic acid and 3,5-dichlorophenylurea acetic acid to 3,5-dichloroaniline. We constructed bacterial combinations consisting of Pseudomonas paucimobilis plus one of the iprodione degraders and showed that these combinations transformed iprodione into 3,5-dichloroaniline. It is known that 3,5-dichloroaniline was the major metabolite found in adapted soils, suggesting that such a bacterial combination might be responsible for degrading iprodione into 3,5-dichloroaniline in adapted soils.

Basic treatment: Establish patent airway. Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for shock and treat if necessary ... . Anticipate seizures and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with normal saline during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 mL/kg up to 200 mL of water for dilution if the patent can swallow, has a strong gag reflex, and does not drool. Administer activated charcoal ... . /Aniline and related compounds/|Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious. Monitor cardiac rhythm and treat arrhythmias as necessary ... . Start an IV with D5W TKO /SRP: "To keep open", minimal flow rate/. Use lactated Ringer's if signs of hypovolemia are present. Watch for signs of fluid overload. Administer 1% solution methylene blue if patient is symptomatic with severe hypoxia, cyanosis, and cardiac compromise not responding to oxygen. ... . For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors if hypotensive with a normal fluid volume. Watch for signs of fluid overload ... . Treat seizures with diazepam (Valium) ... . Use proparacaine hydrochloride to assist eye irrigation. /Aniline and related compounds/

3,5-Dichloroaniline is an intermediate in the production of certain fungicides. This study characterized the capacity of 3,5-dichloroaniline and two putative metabolites to induce methemoglobin formation. In vivo intraperitoneal (i.p.) administration of 0.8 mmol/kg 3,5-dichloroaniline resulted in elevated (P < 0.05) methemoglobin levels at 2 and 4 h after injection and returned to control values within 8 h. In vitro methemoglobin generation was monitored in washed erythrocytes incubated for 60 min at 37~ C with 4 and 8 mM 3,5-dichloroaniline. Methemoglobin generation in vitro was higher (P < 0.05) than control values in erythrocytes incubated for 30 min with 0.2-0.6 mM 4-amino-2,6-dichlorophenol or 5-100 muM 3,5-dichlorophenylhydroxylamine. The in vitro methemoglobin generating capacity in decreasing order was: 3,5-dichlorophenylhydroxylamine > 4-amino-2,6-dichlorophenolults of the in vitro studies further indicated that none of the compounds tested induced lipid peroxidation. Erythrocytes incubated with 5-100 muM 3,5-dichlorophenylhydroxylamine in vitro were associated with depletion of glutathione. These results indicated that: (a) 3,5-dichloroaniline and its metabolites can induce methemoglobin formation; (b) the N-hydroxy metabolite was the most potent inducer of hemoglobin oxidation and (c) glutathione depletion was associated with methemoglobin formation by 3,5-dichlorophenylhydroxylamine.

3,5-dichloroaniline

3,5-Dichloroaniline Use and Manufacturing

Methods of Manufacturing

The preparation methods are as follows. (1) Using o-nitroaniline as raw material, add 25% hydrochloric acid and o-nitroaniline to the reactor, start stirring, and pass chlorine gas at 10-20℃ and negative pressure for chlorination. After the chlorine gas has been ventilated, continue stirring for 15 minutes , And then filter, the filter cake is washed with water to neutral, that is, 2, 4-dichloro-6-nitroaniline. Add industrial ethanol into another reactor, add 2, 4-dichloro-6-nitroaniline under stirring, add 95% H2SO4 below 40℃, cool to 15℃, add sodium nitrite in batches, After adding sodium nitrite, keep the temperature at 15°C and react for 4h, then put the material into the denitrification kettle, slowly heat to the reflux temperature of 80°C, and keep it at reflux for 2h, then heat up to distill out the ethanol, and put the liquid material into the distillation kettle. Steam distillation, the oil-water material obtained by distillation is stratified to obtain 3, 5-dichloronitrobenzene. Put a certain amount of water and 3, 5-dichloronitrobenzene in the reaction kettle, heat to reflux with stirring, add dropwise to prepare a certain concentration of sodium disulfide solution, add dropwise within 1h, and keep refluxing After 3h, stand still for stratification, and the lower oily substance is washed thoroughly with hot water to obtain 3, 5-dichloroaniline. (2) Using p-nitroaniline as raw material, p-nitroaniline is chlorinated in the presence of hydrochloric acid in a reactor to obtain 2, 6-dichloro-4-nitroaniline, and then 2, 6-dichloro- 4-Nitroaniline is diazotized with NaNO2 in the presence of sulfuric acid to obtain the corresponding diazonium sulfate, which is denitrified in ethanol solution to obtain 3, 5-dichloronitrobenzene, which is then reduced or catalyzed by Na2S2 Hydrogenation can produce 3, 5-dichloroaniline. (3) Dichlorobenzene as the raw material method Ishihara Sangyo Co., Ltd. uses o-dichlorobenzene or p-dichlorobenzene as raw materials to obtain brominated dichlorobenzene, which is rearranged in the presence of the catalyst AlCl3 to obtain 3, 5-dichloro Brominated benzene, and then ammoniated with ammonia to obtain 3, 5-dichloroaniline.

Uses

Oil intermediates. Organic Synthesis

Benzenamine, 3,5-dichloro-: ACTIVE

APPLICATION OF THE HALL ELECTROLYTIC CONDUCTIVITY DETECTOR FOR THE ANALYSIS OF CHLOROANILINES & CHLORONITROANILINES IN POTW (WATER TREATMENT) SLUDGES. /CHLOROANILINES AND CHLORONITROANILINES/|APPLICATIONS OF FUSED SILICA CAPILLARY COLUMNS TO THE ANALYSIS OF ENVIRONMENTAL SAMPLES ARE PRESENTED. THE CHROMATOGRAPHIC BEHAVIOR (RETENTION TIME, RELATIVE RETENTION TIME) OF ORGANIC COMPOUNDS OF ENVIRONMENTAL SIGNIFICANCE NOT LISTED AS CONSENT DECREE PRIORITY POLLUTANTS WAS INVESTIGATED ON SE-54 FUSED SILICA CAPILLARY COLUMN RETENTION INDICES RELATIVE RETENTION TIME & MASS SPECTRAL RESPONSE FACTORS ARE PRESENTED FOR 28 COMPOUNDS INCLUDING A NUMBER OF CHLORO- & NITRO-SUBSTITUTED ANILINES. THE DIRECT APPLICATION OF THE FUSED SILICA CAPILLARY COLUMN/MASS SPECTROMETRY INTERFACE TO THE ANALYSIS OF THESE COMPOUNDS IN ACTUAL ENVIRONMENTAL SAMPLES ARE PRESENTED, INCLUDING VENT EMISSIONS FROM A FUNGICIDE MANUFACTURING PROCESS & CONTAMINATED SOIL & WATER SAMPLES FROM 2 METROPOLITAN BOSTON (MA USA) CONSTRUCTION SITES. /CHLORO- AND NITRO-SUBSTITUTED ANILINES/

It is possible to separate urea compounds from chloroaniline, occurring often as metabolites of the former, by high-pressure liquid chromatography. Silica gel is used as stationary phase & depending on the kind of groups to be separated, various hexane:methylene chloride mixtures are used as mobile phase. This isocratic elution is usually unfeasible in the case of urea herbicides associated with chloroanilines of greatly varying polarity. In this case, the polarity of the mobile phase must be adjusted to that of the substances to be eluted. /Chloroanilines/

Environmental transformation -> Pesticide transformation products (metabolite, successor)

3,5-dichloroaniline is a known environmental transformation product of iprodione.|RP 32596 is a known environmental transformation product of Iprodione.

Computed Properties

Molecular Weight:162.01
XLogP3:2.9
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:1
Exact Mass:160.9799046
Monoisotopic Mass:160.9799046
Topological Polar Surface Area:26
Heavy Atom Count:9
Complexity:87.1
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

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