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2,4-二氯苯氧丁酸

2,4-二氯苯氧丁酸用途

【用途一】
广谱性、激素型除草剂，有良好的展着性和内吸性。通常用于水田和麦田等，主要防除禾本科作物田中的双子叶杂草、异性莎科及某些恶性杂草，如鸭舌草、眼子菜、小三棱草、蓼、看麦娘、豚草、野苋、藜等。

2,4-二氯苯氧丁酸名称

[ CAS 号 ]:
94-82-6

[ 中文名 ]:
2,4-滴丁酸

[ 英文名 ]:
2,4-Dichlorophenoxybutyric acid

[中文别名 ]:

[英文别名 ]:

2,4-D butyric acid
Butyrac
Butoxone
Butyrac 118
4-(2,4-DICHLOROPHENOXY)BUTYRIC ACID
2,4-Dichlorophenoxybutyric acid
Butyrac 200
EINECS 202-366-9
Buratal
4-(2,4-dichlorophenoxy)butanoic acid

2,4-二氯苯氧丁酸物理化学性质

[ 密度 ]:
1.369g/cm3

[ 沸点 ]:
150 (0.2 torr)

[ 熔点 ]:
118-120 °C(lit.)

[ 分子式 ]:
C₁₀H₁₀Cl₂O₃

[ 分子量 ]:
249.09100

[ 精确质量 ]:
248.00100

[ PSA ]:
46.53000

[ LogP ]:
3.23700

[ 外观性状 ]:
无色晶体

[ 折射率 ]:
1.552

[ 储存条件 ]:
库房通风低温干燥,与食品原料分开储运

2,4-二氯苯氧丁酸MSDS

2,4-二氯苯氧丁酸毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: ES9100000

CHEMICAL NAME :: Butyric acid, 4-(2,4-dichlorophenoxy)-

CAS REGISTRY NUMBER :: 94-82-6

BEILSTEIN REFERENCE NO. :: 1976809

LAST UPDATED :: 199706

DATA ITEMS CITED :: 16

MOLECULAR FORMULA :: C10-H10-Cl2-O3

MOLECULAR WEIGHT :: 249.10

WISWESSER LINE NOTATION :: QV3OR BG DG

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 700 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 800 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 750 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: >10 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 18928 mg/kg/13W-I

TOXIC EFFECTS :: Endocrine - other changes Blood - changes in leukocyte (WBC) count Related to Chronic Data - death

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 4368 mg/kg/60W-I

TOXIC EFFECTS :: Liver - other changes Blood - changes in spleen Nutritional and Gross Metabolic - weight loss or decreased weight gain

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 5 gm/kg/10D-I

TOXIC EFFECTS :: Nutritional and Gross Metabolic - weight loss or decreased weight gain Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - catalases Related to Chronic Data - death

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 17 mg/kg

SEX/DURATION :: female 1-7 day(s) after conception

TOXIC EFFECTS :: Reproductive - Specific Developmental Abnormalities - other developmental abnormalities Reproductive - Effects on Newborn - stillbirth

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 416 mg/kg

SEX/DURATION :: female 5 day(s) after conception

TOXIC EFFECTS :: Reproductive - Fertility - pre-implantation mortality (e.g. reduction in number of implants per female; total number of implants per corpora lutea) Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus)

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 416 mg/kg

SEX/DURATION :: female 9 day(s) after conception

TOXIC EFFECTS :: Reproductive - Effects on Embryo or Fetus - fetal death

MUTATION DATA

TYPE OF TEST :: DNA repair

TEST SYSTEM :: Bacteria - Bacillus subtilis

DOSE/DURATION :: 5 mg/disc

REFERENCE :: NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: PB80-133226 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989

2,4-二氯苯氧丁酸安全信息

[ 符号 ]:

GHS07, GHS09

[ 信号词 ]:
Warning

[ 危害声明 ]:
H302-H411

[ 警示性声明 ]:
P273

[ 危害码 (欧洲) ]:
Xn: Harmful;N: Dangerous for the environment;

[ 风险声明 (欧洲) ]:
R22;R51/53

[ 安全声明 (欧洲) ]:
S25-S29-S46-S61

[ 危险品运输编码 ]:
UN 3077 9/PG 3

[ WGK德国 ]:
2

[ RTECS号 ]:
ES9100000

[ 包装等级 ]:
III

[ 危险类别 ]:
6.1(b)

[ 海关编码 ]:
2918990021

2,4-二氯苯氧丁酸合成路线

2,4-二氯苯氧丁酸上下游产品

2,4-二氯苯氧丁酸上游产品

2,4-二氯苯氧丁酸下游产品

2,4-二氯苯氧丁酸制备

2，4-滴的合成先合成苯酚钠与氯乙酸钠，然后两者缩合，反应在110～120℃下进行，反应过程维持溶液微碱性，一氯醋酸与苯酚投料比1：1.16。然后进行氯化反应，以氯气为氯化剂，反应温度92～98℃。
也有报道采用下列操作方法：工业苯酚31.6g(0.332mol)和适量甲苯混合后，升温至近回流点，同时滴加氢氧化钠和氯乙酸水溶液，滴加时间1h，于回流温度反应1h，反应毕加自来水230mL，分出有机相溶剂循环使用，得苯氧基乙酸，无需蒸馏操作，直接供氯化反应。以氯气为氯化剂。加微量催化剂（如碘粉），氯化时间1～3.5h，氯化温度65～90℃，氯化结束于室温下过滤洗涤，干燥得2，4-D 57.0g，两步总收率≥76%，质量明显提高。
2,4-滴丁酯的合成将湿2，4-滴在搅拌下加入至定量丁醇中，升温至120～140℃，保持4h，充分脱水，丁醇回流。待分离器水面不再上升时，停止回流，升温至160～170℃，减压蒸出丁醇。

2,4-二氯苯氧丁酸海关

[ 海关编码 ]: 2918990021

[ 中文概述 ]:
2918990021 2,4-滴、2,4-滴丙酸、2,4-滴丁酸等〔包括精2,4-滴丙酸、苯醚菌酯〕。监管条件:S(进出口农药登记证明)。增值税率:17.0%。退税率:9.0%。最低关税:6.5%。普通关税:30.0%

[ 申报要素 ]: 品名, 成分含量, 用途

[ 监管条件 ]: S.进出口农药登记证明

[ Summary ]:
2918990021 2-(2,4-dichlorophenoxy)acetic acid。supervision conditions:s(import or export registration certificate for pesticides)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:6.5%。general tariff:30.0%

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