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2,4-ジクロロ安息香酸

2,4-ジクロロ安息香酸 化学構造式
50-84-0
CAS番号.
50-84-0
化学名:
2,4-ジクロロ安息香酸
别名:
2,4-ジクロロ安息香酸;2,4ジクロロ安息香酸;2,4-ジクロロ安息香酸 塩化物;2,4‐ジクロロ安息香酸
英語化学名:
2,4-Dichlorobenzoic acid
英語别名:
2,4-DCBA;'LGC' (1305);2.4-Dichlorobe;AKOS BBS-00003747;Dichlorbenzoic aci;RARECHEM AL BO 0324;2,4-Dichlorobenzoic;2,4-Dichlorbenzoic a;2,4-dichloro-benzoicaci;2,4-Dichlorbenzoic acid
CBNumber:
CB9255955
化学式:
C7H4Cl2O2
分子量:
191.01
MOL File:
50-84-0.mol

2,4-ジクロロ安息香酸 物理性質

融点 :
157-160 °C(lit.)
沸点 :
200 °C
比重(密度) :
1.4410 (rough estimate)
屈折率 :
1.4590 (estimate)
貯蔵温度 :
Store below +30°C.
溶解性:
ethanol: soluble1g/10 mL, clear, colorless
外見 :
Powder
色:
White to almost white
PH:
2.8 (0.36g/l, H2O, 15℃)
水溶解度 :
0.36 g/L (15 ºC)
BRN :
1868192
安定性::
Stable. Incompatible with strong oxidizing agents.
CAS データベース:
50-84-0(CAS DataBase Reference)
NISTの化学物質情報:
2,4-Dichlorobenzoic acid(50-84-0)
EPAの化学物質情報:
Benzoic acid, 2,4-dichloro-(50-84-0)
安全性情報
  • リスクと安全性に関する声明
  • 危険有害性情報のコード(GHS)
主な危険性  Xn,Xi
Rフレーズ  22-36/37/38
Sフレーズ  26-36-37/39-22
WGK Germany  3
RTECS 番号 DG6650000
Hazard Note  Irritant
TSCA  Yes
HSコード  29163900
化審法 (3)-1410, (3)-1424
絵表示(GHS)
注意喚起語 Warning
危険有害性情報
コード 危険有害性情報 危険有害性クラス 区分 注意喚起語 シンボル P コード
H302 飲み込むと有害 急性毒性、経口 4 警告 P264, P270, P301+P312, P330, P501
H315 皮膚刺激 皮膚腐食性/刺激性 2 警告 P264, P280, P302+P352, P321,P332+P313, P362
H319 強い眼刺激 眼に対する重篤な損傷性/眼刺激 性 2A 警告 P264, P280, P305+P351+P338,P337+P313P
H335 呼吸器への刺激のおそれ 特定標的臓器毒性、単回暴露; 気道刺激性 3 警告
注意書き
P261 粉じん/煙/ガス/ミスト/蒸気/スプレーの吸入を避ける こと。
P264 取扱い後は皮膚をよく洗うこと。
P264 取扱い後は手や顔をよく洗うこと。
P270 この製品を使用する時に、飲食または喫煙をしないこ と。
P280 保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。
P304+P340 吸入した場合:空気の新鮮な場所に移し、呼吸しやすい 姿勢で休息させること。
P405 施錠して保管すること。
P501 内容物/容器を...に廃棄すること。

2,4-ジクロロ安息香酸 価格 もっと(25)

メーカー 製品番号 製品説明 CAS番号 包装 価格 更新時間 購入
富士フイルム和光純薬株式会社(wako) W01APOOR18360 2,4-ジクロロ安息香酸
2,4-Dichlorobenzoic acid
50-84-0 250g ¥30300 2018-12-26 購入
富士フイルム和光純薬株式会社(wako) W01APOOR18360 2,4-ジクロロ安息香酸
2,4-Dichlorobenzoic acid
50-84-0 1kg ¥66000 2018-12-26 購入
東京化成工業 D0337 2,4-ジクロロ安息香酸 >97.0%(GC)(T)
2,4-Dichlorobenzoic Acid >97.0%(GC)(T)
50-84-0 25g ¥2100 2018-12-04 購入
東京化成工業 D0337 2,4-ジクロロ安息香酸 >97.0%(GC)(T)
2,4-Dichlorobenzoic Acid >97.0%(GC)(T)
50-84-0 500g ¥12400 2018-12-04 購入
関東化学株式会社(KANTO) 16090-1A 2,4‐ジクロロ安息香酸 98%
2,4‐Dichlorobenzoic acid 98%
50-84-0 250g ¥6200 2018-12-13 購入

2,4-ジクロロ安息香酸 MSDS


2,4-DCBA

2,4-ジクロロ安息香酸 化学特性,用途語,生産方法

外観

白色~わずかにうすい褐色, 結晶性粉末~粉末又は塊

溶解性

エタノール及びアセトンに溶けやすく、水にほとんど溶けない。

用途

有機合成原料。

化学的特性

white powder

使用

2,4-Dichlorobenzoic Acid is a di-halogenated benzoic acid derivative and an intermediate in the synthesis of spirodiclofen (S682990), a tetronic acid acaricide fungicide used in controlling red mites.

定義

ChEBI: A chlorobenzoic acid that is benzoic acid in which the ring hydrogens at positions 2 and 4 are substituted by chloro groups.

一般的な説明

White to slightly yellowish powder.

空気と水の反応

Insoluble in water.

反応プロフィール

2,4-Dichlorobenzoic acid is a halogenated carboxylic acid. Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in 2,4-Dichlorobenzoic acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions.

火災危険

Flash point data for 2,4-Dichlorobenzoic acid are not available; however, 2,4-Dichlorobenzoic acid is probably combustible.

純化方法

Crystallise the acid from aqueous EtOH (charcoal), then *benzene (charcoal). It can also be recrystallised from water. [Beilstein 9 IV 998.] It can be freed from isomeric acids (to <0.05%) via the (±)--methylbenzylamine salt as follows: dissolve the dichloro-acid (10g, 50.2mmol) in isopropanol (200mL), heat to 60o and add the (±)-benzylamine (5.49g, 45.3mmol), then stir it at 60o for 1hour. Cool the mixture to room temperature, filter the slurry, wash it with isopropanol (25mL) and dry it in vacuo at 40o overnight to give 79% of the salt with m 185.2o. Dissolve the salt (5g) in H2O (50mL) and MeOH (20mL), then heat to 60o and add concentrated HCl to pH <2.0. Cool the solution to room temperature add H2O (12mL), filter it, wash it with H2O (30mL) and dry it in vacuo at 40o overnight to give 94% of the acid with m 162.0o. [Ley & Yates Organic Process Research & Development 12 120 2008.]

2,4-ジクロロ安息香酸 上流と下流の製品情報

原材料

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2,4-ジクロロ安息香酸 生産企業

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50-84-0(2,4-ジクロロ安息香酸)キーワード:


  • 50-84-0
  • Benzoic acid,2,4-dichloro- (8CI,9CI)
  • 2,4-Dichlorbenzoic a
  • 2,4-Dichlorobenzoic acid, 98% 100GR
  • 2,4-Dichlorobenzoic acid, 98% 5GR
  • Dichlorbenzoic aci
  • 2,4- twochlorobenzoic acid
  • 2, 4 - dichlorobenzene forMic acid
  • 2.4-Dichlorobe
  • 2,4-dichloro-benzoicaci
  • Benzoic acid, 2,4-dichloro-
  • AKOS BBS-00003747
  • 2,4-DCBA
  • 2,4-DICHLOROBENZOIC ACID
  • 'LGC' (1305)
  • RARECHEM AL BO 0324
  • 2,4-Dichlorbenzoic acid
  • 2,4-Dichlolrobenzoic Acid
  • TETRASUL PESTANAL (2,4,4',5-TETRA- CHLOR
  • 2,4-Dichlorobenzoicacid,98%
  • 2,4-Dichlorobenzoic
  • Furosemide EP Impurity E
  • Furosemide Impurity 5(Furosemide EP Impurity E)
  • 2,4-ジクロロ安息香酸
  • 2,4ジクロロ安息香酸
  • 2,4-ジクロロ安息香酸 塩化物
  • 2,4‐ジクロロ安息香酸
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