13645-74-4

• 常用中文名：4,5-二溴-2-甲基哒嗪-3(2H)-酮
• 常用英文名：4,5-Dibromo-2-methyl-3(2H)-pyridazinone
• CAS号：13645-74-4
• 分子式：C₅H₄Br₂N₂O
• 分子量：267.906
• 发布时间：2018-10-12 17:48:41
• 更新时间：2025-09-18 18:21:41

名称

• 中文名: 4,5-二溴-2-甲基-2H-吡嗪-3-酮
• 英文名: 4,5-dibromo-2-methylpyridazin-3-one
• 英文别名: 4,5-dibromo-2-methylpyridazin-3(2H)-one; 3(2H)-Pyridazinone, 4,5-dibromo-2-methyl-; 3(2H)-Pyridazinone,4,5-dibromo-2-methyl; 4,5-Dibromo-2-methyl-3(2H)-pyridazinone; 4,5-dibromo-2-methyl-2H-pyridazin-3-one; 2-methyl-4,5-dibromo-3(2H)-pyridazinone

物化性质

• 密度: 2.2±0.1 g/cm3
• 沸点: 236.9±50.0 °C at 760 mmHg
• 熔点: 120 °C
• 分子式: C₅H₄Br₂N₂O
• 分子量: 267.906
• 闪点: 97.1±30.1 °C
• 精确质量: 265.869019
• PSA: 34.89000
• LogP: 0.00
• 蒸汽压: 0.0±0.5 mmHg at 25°C
• 折射率: 1.679
• 储存条件: 2-8°C，惰性气氛

毒性和生态

CHEMICAL IDENTIFICATION RTECS NUMBER : UR6178000 CHEMICAL NAME : 3(2H)-Pyridazinone, 4,5-dibromo-2-methyl- CAS REGISTRY NUMBER : 13645-74-4 LAST UPDATED : 199212 DATA ITEMS CITED : 2 MOLECULAR FORMULA : C5-H4-Br-N2-O MOLECULAR WEIGHT : 188.02 HEALTH HAZARD DATA ACUTE TOXICITY DATA TYPE OF TEST : LD - Lethal dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : >1 gm/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : FRPSAX Farmaco, Edizione Scientifica. (Casella Postale 227, 27100 Pavia, Italy) V.8-43 1953-88 For publisher information, see FRMCE8 Volume(issue)/page/year: 40,,921,1985 TYPE OF TEST : LD - Lethal dose ROUTE OF EXPOSURE : Intraperitoneal SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : >300 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : FRPSAX Farmaco, Edizione Scientifica. (Casella Postale 227, 27100 Pavia, Italy) V.8-43 1953-88 For publisher information, see FRMCE8 Volume(issue)/page/year: 40,921,1985

安全

• 海关编码: 2933990090

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海关

海关编码	2933990090
中文概述	2933990090. 其他仅含氮杂原子的杂环化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0%
申报要素	品名, 成分含量, 用途, 乌洛托品请注明外观, 6－己内酰胺请注明外观, 签约日期
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%