2-(3,4-二氯苯基)-4-甲基-1,2,4-恶二唑烷二酮

Name: 2-(3,4-二氯苯基)-4-甲基-1,2,4-恶二唑烷二酮
Brand: 济南圣和化工有限公司

CAS 20354-26-1C9H6Cl2N2O3MW 261.06

2-(3,4-二氯苯基)-4-甲基-1,2,4-恶二唑烷二酮，CAS 登记号 20354-26-1，由济南圣和化工有限公司现货供应，可提供纯度按批次COA提供(不公开发布) 的规格，下游主要用于有机化学品。支持样品与小批量试用，批量价格请联系我们获取，验收以批次 COA 为准。

规格参数

CAS号20354-26-1

分子式C9H6Cl2N2O3

分子量261.06

熔点123-124 °C

LogP2.7

纯度按批次COA提供(不公开发布)

包装按订单/批次确认(不公开发布)

应用领域有机化学品

类别有机化学品

用途与场景

有机化学品

包装与供货

包装规格按订单/批次确认(不公开发布)

纯度规格按批次COA提供(不公开发布)

储存条件密封、阴凉干燥处保存

供货周期现货/按订单安排

文件与支持

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常见问题

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本页已列出 2-(3,4-二氯苯基)-4-甲基-1,2,4-恶二唑烷二酮的 CAS 号：20354-26-1，可与随货 COA 核对。

可以提供哪些规格和包装？

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2-(3,4-二氯苯基)-4-甲基-1,2,4-恶二唑烷二酮一般用在什么产品里？

主要涉及有机化学品。

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PubChem 公开数据

Description

2-(3,4-dichlorophenyl)-4-methyl-1,2,4-oxadiazolidinedione · CAS 20354-26-1 · C9H6Cl2N2O3. UNII E35M7EMD3V. Melting Point: 123-124 °C; Density: 1.24 at 25 °C; Vapor Pressure: 0.000001 [mmHg].

Identification

CAS Registry Number	20354-26-1
PubChem CID	4690
Molecular formula	C9H6Cl2N2O3
IUPAC name	2-(3,4-dichlorophenyl)-4-methyl-1,2,4-oxadiazolidine-3,5-dione
UNII (FDA)	E35M7EMD3V

Computed Descriptors

Molecular Weight	261.06
XLogP3	2.7
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	1
Exact Mass	259.9755474
Monoisotopic Mass	259.9755474
Topological Polar Surface Area	49.9
Heavy Atom Count	16
Formal Charge	0

Physical & Chemical Properties

Melting Point	123-124 °C
Density	1.24 at 25 °C
Vapor Pressure	0.000001 [mmHg]
Vapor Pressure	133 uPa at 25 °C

Physical description & handling notes

Methazole appears as colorless crystals to light tan solid. Non corrosive. Herbicide.
White solid; Technical material: Light tan solid; [HSDB]
White solid
Decomposes before boiling
@ 25 °C: 1.5 MG/L WATER, 40 G/L ACETONE, 6.5 G/L METHANOL, 55 G/L XYLENE
@ 25 °C in ethanol approx equal to 1.0% wt/wt

GHS Hazard Classification

Reported hazard statements	H302, H312, H315, H319, H411

H302: Harmful if swallowed [Warning Acute toxicity, oral]

H312: Harmful in contact with skin [Warning Acute toxicity, dermal]

Documented Uses

Used as pre- and post-emergence herbicide for control of annual broad-leaved weeds and some grasses in cotton, onions, potatoes, citrus and stone fruit, vines, lucerne, tea, and nuts; [HSDB]
Pre- and post-emergence control of annual broad-leaved weeds and some grasses incotton, garlic, onions, potatoes, citrus fruit, stone fruit, vines, lucerne, tea, and nut crops.
PRODUCED BY CYCLIZATION, WITH A HALOFORMATE, OF 1-(3,4-DICHLOROPHENYL)-1-HYDROXY-3-METHYLUREA, WHICH IS FORMED BY REACTION OF N-(3,4-DICHLOROPHENYL)HYDROXYLAMINE WITH METHYL ISOCYANATE.
METHAZOLE APPEARS TO BE A PROHERBICIDE WHILE DIURON & LINURON ACT DIRECTLY & VIA METABOLITES AS PHOTOSYNTHETIC INHIBITORS.
It is a selective herbicide effective against certain grasses and many broad-leaved weeds: pre-emergence in garlic and potatoes (1-2 kg ai/ha); as a directed spray on soil or emerged weeds in citrus, stone-fruits, nuts, tea and established vines (6 kg/ha) and on cotton 15 cm tall (1-2 kg/ha), onions (>2 leaves) (2.5 kg/ha), newly seeded or winter-dormant lucerne (>1 yr old) (2.25 kg/ha). It is preferably applied to moist soil; lower rates are applicable to light sandy soils.
LITTLE OR NO INTACT HERBICIDE WAS TRANSLOCATED FROM ROOTS TO LEAVES BUT RADIOACTIVITY IN LEAVES ACCOUNTED FOR 80-90% OF METHANOL-SOLUBLE LABEL @ 47 DAYS POSTTREATMENT. MOST OF THIS (14)C WAS RECOVERED AS DCPU /1-(3,4-DICHLOROPHENYL)UREA/ (50-60%) & UNIDENTIFIED POLAR METABOLITE (30-40%).

Synonyms

Methazole; 20354-26-1; Metazole; Oxydiazol; Bioxone; Paxilon; Tunic; Metazol; Mezopur; CHLORMETHAZOLE; 2-(3,4-Dichlorophenyl)-4-methyl-1,2,4-oxadiazolidine-3,5-dione; Probe 75; VCS 438; E35M7EMD3V; DTXSID1040293; RefChem:811715

Frequently Asked Questions

What are the CAS number and molecular formula of 2-(3,4-dichlorophenyl)-4-methyl-1,2,4-oxadiazolidinedione?

CAS 20354-26-1; molecular formula C9H6Cl2N2O3; molecular weight — g/mol.

What other names is 2-(3,4-dichlorophenyl)-4-methyl-1,2,4-oxadiazolidinedione known by?

Methazole, 20354-26-1, Metazole, Oxydiazol, Bioxone, Paxilon.

Is 2-(3,4-dichlorophenyl)-4-methyl-1,2,4-oxadiazolidinedione classified as hazardous?

Hazard statements reported: H302, H312, H315, H319, H411.

What are the key physical properties of 2-(3,4-dichlorophenyl)-4-methyl-1,2,4-oxadiazolidinedione?

Melting Point: 123-124 °C; Density: 1.24 at 25 °C; Vapor Pressure: 0.000001 [mmHg]; Vapor Pressure: 133 uPa at 25 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.

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