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o-キシレン

o-キシレン 化学構造式
95-47-6
CAS番号.
95-47-6
化学名:
o-キシレン
别名:
o-キシレン;o-キシレン (1mg/mlメタノール溶液) [水質分析用];2-メチルトルエン;1,2-キシレン;o-ジメチルベンゼン;1,2-ジメチルベンゼン;オルソキシレン;O-キシレン CRM4011-A;O-キシレン標準原液;オルトキシレン;oキシレン;キシレン;O‐キシレン;O‐キシレン CRM4011‐A;O‐キシレン標準原液;O-キシレン PURISS. P.A.,≥99.0% (GC);O-キシレン REAGENT GRADE,≥98.0%;O-キシレン クロマソルブ PLUS,FOR HPLC,98%;キシレン,異性体ノ混合物;O-キシレン STANDARD
英語化学名:
o-Xylene
英語别名:
YLENE;XYLOL;o-Xylol;XYLENES;2-xylene;O-XYLENE;o-Xylenes;ai3-08197;0-Xylene ;3,4-Xylene
CBNumber:
CB1854693
化学式:
C8H10
分子量:
106.17
MOL File:
95-47-6.mol

o-キシレン 物理性質

融点 :
-26--23 °C(lit.)
沸点 :
143-145 °C(lit.)
比重(密度) :
0.879 g/mL at 20 °C(lit.)
蒸気密度:
3.7 (vs air)
蒸気圧:
<0.1 atm ( 21.1 °C)
屈折率 :
n20/D 1.505(lit.)
闪点 :
90 °F
貯蔵温度 :
0-6°C
溶解性:
water: partially soluble0.1705 g/L at 25°C
外見 :
Solid or Crystalline Powder
酸解離定数(Pka):
>15 (Christensen et al., 1975)
色:
Yellow to beige
臭い (Odor):
Benzene-like; characteristic aromatic.
爆発限界(explosive limit):
1.0-7.6%(V)
水溶解度 :
Sparingly soluble in water. (0.2g/L)
極大吸収波長 (λmax):
λ: 288 nm Amax: 1.00
λ: 300 nm Amax: 0.40
λ: 325 nm Amax: 0.05
λ: 350-400 nm Amax: 0.01
Merck :
14,10081
BRN :
1815558
Henry's Law Constant:
14.0 at 45.00 °C, 16.4 at 50.00 °C, 19.0 at 55.00 °C, 21.3 at 60.00 °C, 26.3 at 70.00 °C (static headspace-GC, Park et al., 2004)
暴露限界値:
NIOSH REL: 100 ppm (435 mg/m3), STEL 150 ppm (655 mg/m3), IDLH 900 ppm; OSHA PEL: TWA 100 ppm; ACGIH TLV: TWA 100 ppm, STEL 150 ppm (adopted).
安定性::
Stable. Incompatible with oxidizing agents. Flammable. Hygroscopic.
InChIKey:
CTQNGGLPUBDAKN-UHFFFAOYSA-N
CAS データベース:
95-47-6(CAS DataBase Reference)
NISTの化学物質情報:
Benzene, 1,2-dimethyl-(95-47-6)
EPAの化学物質情報:
Benzene, 1,2-dimethyl-(95-47-6)
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,T,F
Rフレーズ  10-20/21-38-39/23/24/25-23/24/25-11
Sフレーズ  25-45-36/37-16-7
RIDADR  UN 1307 3/PG 3
WGK Germany  2
RTECS 番号 ZE2450000
自然発火温度 867 °F
TSCA  Yes
国連危険物分類  3
容器等級  II
HSコード  29024100
有毒物質データの 95-47-6(Hazardous Substances Data)
毒性 Acute oral LD50 in rats is approximately 5 g/kg (quoted, RTECS, 1992).
消防法 危険物第4類第二石油類(非水溶性)
化審法 (3)-3, (3)-60 優先評価化学物質
安衛法 有機則 第二種有機溶剤等
PRTR法 第一種指定化学物質
毒劇物取締法 劇物
絵表示(GHS)
注意喚起語 Danger
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
H225 引火性の高い液体および蒸気 引火性液体 2 危険 P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H226 引火性の液体および蒸気 引火性液体 3 警告
H304 飲み込んで気道に侵入すると生命に危険のおそ れ 吸引性呼吸器有害性 1 危険
H312 皮膚に接触すると有害 急性毒性、経皮 4 警告 P280,P302+P352, P312, P322, P363,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
H332 吸入すると有害 急性毒性、吸入 4 警告 P261, P271, P304+P340, P312
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
H370 臓器の障害 特定標的臓器有害性、単回暴露 1 危険 P260, P264, P270, P307+P311, P321,P405, P501
H412 長期的影響により水生生物に有害 水生環境有害性、慢性毒性 3 P273, P501
注意書き
P210 熱/火花/裸火/高温のもののような着火源から遠ざ けること。-禁煙。
P260 粉じん/煙/ガス/ミスト/蒸気/スプレーを吸入しないこ と。
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。
P273 環境への放出を避けること。
P280 保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。
P301+P310 飲み込んだ場合:直ちに医師に連絡すること。
P303+P361+P353 皮膚(または髪)に付着した場合:直ちに汚染された衣 類をすべて脱ぐこと/取り除くこと。皮膚を流水/シャワー で洗うこと。
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。
P311 医師に連絡すること。
P331 無理に吐かせないこと。

o-キシレン 価格 もっと(39)

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) W01ACSM-502-57 o-キシレン
o-Xylene, 0.2 mg/mL in MeOH
95-47-6 1mL ¥3700 2018-12-26 購入
富士フイルム和光純薬株式会社(wako) W01ACSAS-E0201 o-キシレン Standard
o-Xylene Standard, 1000 ug/mL in MeOH
95-47-6 1mL ¥11800 2018-12-26 購入
東京化成工業 X0012 o-キシレン >98.0%(GC)
o-Xylene >98.0%(GC)
95-47-6 500mL ¥2000 2018-12-04 購入
東京化成工業 X0012 o-キシレン >98.0%(GC)
o-Xylene >98.0%(GC)
95-47-6 25mL ¥1600 2018-12-04 購入
関東化学株式会社(KANTO) 46005-02 o‐キシレン >90.0%(GC)
o‐Xylene >90.0%(GC)
95-47-6 500mL ¥2300 2018-12-13 購入

o-キシレン 化学特性,用途語,生産方法

外観

無色澄明の液体

溶解性

エタノール、エーテル、アセトン、二硫化炭素に可溶。水にほとんど不溶。無色澄明の液体で、エタノールに溶けやすく、水にほとんど溶けない。

用途

無水フタル酸原料。

化学的特性

colourless liquid

物理的性質

Clear, colorless liquid with an aromatic odor. An odor threshold concentration of 380 ppbv was reported by Nagata and Takeuchi (1990).

使用

Preparation of phthalic acid, phthalic anhydride, terephthalic acid, isophthalic acid; solvent for alkyd resins, lacquers, enamels, rubber cements; manufacture of dyes, pharmaceuticals, and insecticides; motor fuels.

定義

ChEBI: A xylene substituted by methyl groups at positions 1 and 3.

一般的な説明

A colorless watery liquid with a sweet odor. Less dense than water. Insoluble in water. Irritating vapor.

空気と水の反応

Highly flammable. Insoluble in water.

反応プロフィール

1,2-Dimethylbenzene may react with oxidizing materials. .

健康ハザード

Vapors cause headache and dizziness. Liquid irritates eyes and skin. If taken into lungs, causes severe coughing, distress, and rapidly developing pulmonary edema. If ingested, causes nausea, vomiting, cramps, headache, and coma. Can be fatal. Kidney and liver damage can occur.

火災危険

Behavior in Fire: Vapor is heavier than air and may travel considerable distance to a source of ignition and flash back.

火災危険

Flash Point (°F): 63 ℃; 75 ℃; Flammable Limits in Air (%): 1.1- 7.0; Fire Extinguishing Agents: Foam, dry chemical, or carbon dioxide; Fire Extinguishing Agents Not To Be Used: Water may be ineffective; Special Hazards of Combustion Products: Not pertinent; Behavior in Fire: Vapor is heavier than air and may travel considerable distance to a source of ignition and flash back; Ignition Temperature (°F): 869; Electrical Hazard: Class I, Group D; Burning Rate: 5.8 mm/min.

化学反応性

Reactivity with Water No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

安全性プロファイル

Moderately toxic bj7 intraperitoneal route. Mldly toxic by ingestion and inhalation. An experimental teratogen. A common air contaminant. A very dangerous fire hazard when exposed to heat or flame. Explosive in the form of vapor when exposed to heat or flame. To fight fire, use foam, CO2, dry chemical. Incompatible with oxidzing materials. When heated to decomposition it emits acrid smoke and irritating fumes. Emitted from modern building materials (CENEAR 69,22,91). See also other xylene entries.

Source

Detected in distilled water-soluble fractions of 87 octane gasoline (3.83 mg/L), 94 octane gasoline (11.4 mg/L), Gasohol (8.49 mg/L), No. 2 fuel oil (1.73 mg/L), jet fuel A (0.87 mg/L), diesel fuel (1.75 mg/L), military jet fuel JP-4 (1.99 mg/L) (Potter, 1996), new motor oil (16.2 to 17.5 μg/L), and used motor oil (294 to 308 μg/L) (Chen et al., 1994). The average volume percent and estimated mole fraction in American Petroleum Institute PS-6 gasoline are 2.088 and 0.01959, respectively (Poulsen et al., 1992). Schauer et al. (1999) reported o-xylene in a diesel-powered medium-duty truck exhaust at an emission rate of 830 μg/km. Diesel fuel obtained from a service station in Schlieren, Switzerland contained o-xylene at a concentration of 223 mg/L (Schluep et al., 2001).
California Phase II reformulated gasoline contained o-xylene at a concentration of 19.7 g/kg. Gas-phase tailpipe emission rates from gasoline-powered automobiles with and without catalytic converters were 5.41 and 562 mg/km, respectively (Schauer et al., 2002).
Thomas and Delfino (1991) equilibrated contaminant-free groundwater collected from Gainesville, FL with individual fractions of three individual petroleum products at 24–25 °C for 24 h. The aqueous phase was analyzed for organic compounds via U.S. EPA approved test method 602. Average m+p-xylene concentrations reported in water-soluble fractions of unleaded gasoline, kerosene, and diesel fuel were 8.611, 0.658, and 0.228 mg/L, respectively. When the authors analyzed the aqueous-phase via U.S. EPA approved test method 610, average m+p-xylene concentrations in water-soluble fractions of unleaded gasoline, kerosene, and diesel fuel were lower, i.e., 6.068, 0.360, and 0.222 mg/L, respectively. Based on laboratory analysis of 7 coal tar samples, o-xylene concentrations ranged from 2 to 2,000 ppm (EPRI, 1990). A high-temperature coal tar contained o-xylene at an average concentration of 0.04 wt % (McNeil, 1983).
Schauer et al. (2001) measured organic compound emission rates for volatile organic compounds, gas-phase semi-volatile organic compounds, and particle-phase organic compounds from the residential (fireplace) combustion of pine, oak, and eucalyptus. The gas-phase emission rate of o-xylene was 18.1 mg/kg of pine burned. Emission rates of o-xylene were not measured during the combustion of oak and eucalyptus.
Drinking water standard (final): For all xylenes, the MCLG and MCL are both 10 mg/L. In addition, a DWEL of 70 mg/L was recommended (U.S. EPA, 2000).

環境運命予測

Biological. Reported biodegradation products of the commercial product containing xylene include α-hydroxy-p-toluic acid, p-methylbenzyl alcohol, benzyl alcohol, 4-methylcatechol, mand p-toluic acids (Fishbein, 1985). o-Xylene was also cometabolized resulting in the formation of o-toluic acid (Pitter and Chudoba, 1990). In anoxic groundwater near Bemidji, MI, o-xylene anaerobically biodegraded to the intermediate o-toluic acid (Cozzarelli et al., 1990). In gasolinecontaminated groundwater, methylbenzylsuccinic acid was identified as the first intermediate during the anaerobic degradation of xylenes (Reusser and Field, 2002).
Photolytic. Cox et al. (1980) reported a rate constant of 1.33 x 10-11 cm3/molecule?sec for the reaction of gaseous o-xylene with OH radicals based on a value of 8 x 10-12 cm3/molecule?sec for the reaction of ethylene with OH radicals.
Surface Water. The evaporation half-life of o-xylene in surface water (1 m depth) at 25 °C is estimated to be 5.18 h (Mackay and Leinonen, 1975).
Groundwater. Nielsen et al. (1996) studied the degradation of o-xylene in a shallow, glaciofluvial, unconfined sandy aquifer in Jutland, Denmark. As part of the in situ microcosm study, a cylinder that was open at the bottom and screened at the top was installed through a cased borehole approximately 5 m below grade. Five liters of water was aerated with atmospheric air to ensure aerobic conditions were maintained. Groundwater was analyzed weekly for approximately 3 months to determine o-xylene concentrations with time. The experimentally determined firstorder biodegradation rate constant and corresponding half-life following a 7-d lag phase were 0.1/d and 6.93 d, respectively.
Photolytic. When synthetic air containing gaseous nitrous acid and o-xylene was exposed to artificial sunlight (λ = 300–450 nm) biacetyl, peroxyacetal nitrate, and methyl nitrate formed as products (Cox et al., 1980). A n-hexane solution containing o-xylene and spread as a thin film (4 mm) on cold water (10 °C) was irradiated by a mercury medium pressure lamp. In 3 h, 13.6% of the o-xylene photooxidized into o-methylbenzaldehyde, o-benzyl alcohol, o-benzoic acid, and omethylacetophenone (Moza and Feicht, 1989). Irradiation of o-xylene at ≈ 2537 ? at 35 °C and 6 mmHg isomerizes to m-xylene (Calvert and Pitts, 1966). Glyoxal, methylglyoxal, and biacetyl were produced from the photooxidation of o-xylene by OH radicals in air at 25 °C (Tuazon et al., 1986a).
Chemical/Physical. Under atmospheric conditions, the gas-phase reaction of o-xylene with OH radicals and nitrogen oxides resulted in the formation of o-tolualdehyde, o-methylbenzyl nitrate, nitro-o-xylenes, 2,3-and 3,4-dimethylphenol (Atkinson, 1990). Kanno et al. (1982) studied the aqueous reaction of o-xylene and other aromatic hydrocarbons (benzene, toluene, m- and p-xylene, and naphthalene) with hypochlorous acid in the presence of ammonium ion. They reported that the aromatic ring was not chlorinated as expected but was cleaved by chloramine forming cyanogen chloride. The amount of cyanogen chloride formed increased at lower pHs (Kanno et al., 1982). In the gas phase, o-xylene reacted with nitrate radicals in purified air forming the following products: 5-nitro-2-methyltoluene and 6-nitro-2-methyltoluene, o-methylbenzaldehyde, and an aryl nitrate (Chiodini et al., 1993).

純化方法

o-Xylene (4.4Kg) is sulfonated by stirring for 4hours with 2.5L of conc H2SO4 at 95o. After cooling, and separating the unsulfonated material, the product is diluted with 3L of water and neutralised with 40% NaOH. On cooling, sodium o-xylene sulfonate separates and is recrystallised from half its weight of water. [A further crop of crystals is obtained by concentrating the mother liquor to one-third of its volume.] The salt is dissolved in the minimum amount of cold water, then mixed with the same amount of cold water, and with the same volume of conc H2SO4 and heated to 110o. o-Xylene is regenerated and steam distils. The distillate is saturated with NaCl, the organic layer is separated, dried and redistilled. [Beilstein 5 H 362, 5 I 179, 5 II 281, 5 III 807, 5 IV 917.]

o-キシレン 上流と下流の製品情報

原材料

準備製品


o-キシレン 生産企業

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95-47-6(o-キシレン)キーワード:


  • 95-47-6
  • ortho-xylene、1,2-dimethylbenzene
  • 1,2-dimethyl-benzen
  • 2-methyltoluene
  • 2-xylene
  • 3,4-Xylene
  • ai3-08197
  • Benzene,1,2-dimethyl
  • benzene,1,2-dimethyl-
  • o-Dimethylbenzene
  • o-Methyltoluene
  • o-Xylenes
  • o-Xylol
  • ORTHO-XYLENE
  • O-XYLENE
  • YLENE
  • ORHTO XYLENE
  • ORTHO XYLENE 98% MIN
  • O-XYLENE, 1X1ML, MEOH, 200UG/ML
  • O-XYLENE EXTRA PURE
  • O-XYLENE, 98%, SPECTROPHOTOMETRIC GRADE
  • O-XYLENE, 1X1ML, MEOH, 5000UG/ML
  • O-XYLENE, 5000MG, NEAT
  • O-XYLENE OEKANAL
  • O-XYLENE, 98%, HPLC GRADE
  • O-XYLENE, ANHYDROUS, 97%
  • O-XYLENE, STANDARD FOR GC
  • O-XYLENE GC STANDARD
  • O-XYLENE 99%
  • O-XYLENE 99+% GR
  • O-XyleneCertified
  • o-キシレン
  • o-キシレン (1mg/mlメタノール溶液) [水質分析用]
  • 2-メチルトルエン
  • 1,2-キシレン
  • o-ジメチルベンゼン
  • 1,2-ジメチルベンゼン
  • オルソキシレン
  • O-キシレン CRM4011-A
  • O-キシレン標準原液
  • オルトキシレン
  • oキシレン
  • キシレン
  • O‐キシレン
  • O‐キシレン CRM4011‐A
  • O‐キシレン標準原液
  • O-キシレン PURISS. P.A.,≥99.0% (GC)
  • O-キシレン REAGENT GRADE,≥98.0%
  • O-キシレン クロマソルブ PLUS,FOR HPLC,98%
  • キシレン,異性体ノ混合物
  • O-キシレン STANDARD
  • O-キシレン 溶液
  • o-キシレン Standard, 1000 µg/mL in MeOH
  • o-キシレン, 0.2 mg/mL in MeOH
  • o-キシレン, 2.0 mg/mL in MeOH
  • o-キシレン, 99%
  • 標準溶液 (VOC)
  • 分析化学
  • 水中および土壌中の揮発性有機化合物分析用標準溶液
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