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二酸化イオウ

二酸化イオウ 化学構造式
7446-09-5
CAS番号.
7446-09-5
化学名:
二酸化イオウ
别名:
二酸化イオウ;亜硫酸ガス;二酸化硫黄
英語化学名:
Sulfur dioxide
英語别名:
SO2;sulfuroxide;Sulfur oxide;sulfurousoxide;Schwefeldioxid;Schwefeldioxyd;SulfureDioxide;Sulfur dioxide;Sulfurous oxide;dioxidedesoufre
CBNumber:
CB4323183
化学式:
O2S
分子量:
64.06
MOL File:
7446-09-5.mol

二酸化イオウ 物理性質

融点 :
−73 °C(lit.)
沸点 :
−10 °C(lit.)
比重(密度) :
1.25 g/mL at 25 °C(lit.)
蒸気密度:
2.26 (21 °C, vs air)
蒸気圧:
1779 mm Hg ( 21 °C)
FEMA :
3039 | SULFUR DIOXIDE
外見 :
colorless gas
臭い (Odor):
Pungent odor detectable at 0.3 to 5 ppm
水溶解度 :
%H2O: 17.7 (0°C), 11.9 (15°C), 8.5 (25°C), 6.4 (35°C); % other solvents: 25, alcohol; 32, methanol [MER06]
Merck :
13,9061
BRN :
3535237
暴露限界値:
TLV-TWA 2 ppm (~5 mg/m3) (ACGIH), 5 ppm (OSHA and MSHA); IDLH 100 ppm (NIOSH).
安定性::
Stable. Non-corrosive when dry to common materials except zinc; corrosive when wet. Incompatible with strong reducing or oxidizing agents, moisture, zinc and its alloys.
CAS データベース:
7446-09-5(CAS DataBase Reference)
NISTの化学物質情報:
Sulfur dioxide(7446-09-5)
EPAの化学物質情報:
Sulfur dioxide(7446-09-5)
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  T
Rフレーズ  23-34
Sフレーズ  9-26-36/37/39-45
RIDADR  UN 2037 2.3
WGK Germany  1
RTECS 番号 WS4550000
4.5-31
国連危険物分類  2.3
有毒物質データの 7446-09-5(Hazardous Substances Data)
毒性 LC50 inhal (rat) 2520 ppm (6590 mg/m3; 1 h)
LCLO inhal (human) 1000 ppm (2600 mg/m3; 10 min)
PEL (OSHA) 5 ppm (13 mg/m3)
TLV-TWA (ACGIH) 2 ppm (5.2 mg/m3)
STEL (ACGIH) 5 ppm (13 mg/m3)
化審法 一般化学物質
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
H280 加圧ガス;熱すると爆発のおそれ 高圧ガス 高圧ガス
液化ガス
溶解ガス
警告 P410+P403
H314 重篤な皮膚の薬傷?眼の損傷 皮膚腐食性/刺激性 1A, B, C 危険 P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H331 吸入すると有毒 急性毒性、吸入 3 危険 P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
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。
P280 保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。
P305+P351+P338 眼に入った場合:水で数分間注意深く洗うこと。次にコ ンタクトレンズを着用していて容易に外せる場合は外す こと。その後も洗浄を続けること。
P310 ただちに医師に連絡すること。
P410+P403 日光から遮断し、換気の良い場所で保管するこ と。

二酸化イオウ 価格 もっと(2)

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
Sigma-Aldrich Japan 901592 0.5?M in THF
Sulfur dioxide solution 0.5?M in THF
7446-09-5 25ml ¥30000 2018-12-25 購入
Sigma-Aldrich Japan 901592 0.5?M in THF
Sulfur dioxide solution 0.5?M in THF
7446-09-5 100ml ¥79000 2018-12-25 購入

二酸化イオウ MSDS


Sulfur dioxide

二酸化イオウ 化学特性,用途語,生産方法

用途

農業用くん蒸剤、殺虫剤、保存剤(果物及び野菜の防腐)、殺菌剤(食品加工,器具の消毒など)、漂白剤(製紙,繊維及び織物,麦わら,ゼラチン,グルー,てん菜糖)、パルプ工業(木材の処理)、粗皮のなめし、消毒剤、防腐剤、鉱油の精製(芳香族成分の溶剤抽出)非水化学溶媒、各種亜硫酸塩、その他化学薬品の製造、冶金

効能

酸化防止剤

化学的特性

Sulfur dioxide is a colorless gas. It is stable, and non-corrosive when dry to common materials except zinc. Sulfur dioxide is corrosive when wet and incompatible with strong reducing or oxidizing agents, moisture, zinc, and its alloys. Sulfur dioxide has a large number of industrial applications. For instance, sulfur dioxide is used in the manufacture of sodium sulfi te, sulfuric acid, sulfuryl chloride, thionyl chloride, organic sulfonate,extensively as a bleaching agent, particularly in the bleaching of beet sugar, fl our, straw, textiles, and wood pulp. Sulfur dioxide has industrial utility in the tanning of leather, in brewing and preserving. Sulfur dioxide is a colorless gas with a characteristic and strong suffocating odor. Sulfur dioxide gas is released primarily from the combustion of fossil fuels (75%–85% of the industrial sources), the smelting of sulfi de ores, volcanic emissions, and several other natural sources. It is a US EPA priority air pollutant, but has many industrial and agricultural uses. It is sometimes added as a warning marker and fi re retardant to liquid grain fumigants.

化学的特性

Sulfur dioxide is a noncombustible colorless gas at ambient temperatures with a characteristic, strong, suffocating odor. The Odor Threshold is 1.1ppm. Shipped as a liquefied compressed gas.

化学的特性

Sulfur dioxide,S02, also known as sulfurous acid anhydride,is a toxic, irritating, colorless gas. It is soluble in water, alcohol, and ether, and boils at -10 °C. Sulfur dioxide is used as a chemical intermediate, in artificial ice, in paper pulping,in ore refining,and as a solvent.

化学的特性

Sulfur dioxide occurs as a colorless gas at room temperature and pressure, with a strong, suffocating, pungent odor. It is noncombustible and is a strong reducing agent.

化学的特性

Sulfur dioxide has a sharp, pungent odor. It has been employed in food processing as a sanitizing agent for food containers and fermentation equipment, as a preservative to reduce or prevent microbial spoilage of food, as a selective inhibitor of undesirable microorganisms in the fermentation industry and as an antioxidant and inhibitor of enzyme-catalyzed oxidative discoloration and nonenzymatic browning, during preparation, storage and distribution of many foods. It is shipped as a liquid under pressure. Its vapor density is 2.26 times that of air at atmospheric pressure and 0°C. The specific gravity of the liquid is about 1.436 at 0°/4°C.

天然物の起源

Reported found in orange juice, grapefruit juice, onion, boiled and cooked beef,starfruit and weinbrand brandy.

使用

Sulfur dioxide is used as a bleaching andfumigating agent; as a disinfectant, for treat ing wood pulp for manufacturing paper, inmetal refining, for preserving food and vegetables, and as a reducing agent. It is a majorair pollutant and is produced when soft coal,oils, or other sulfur-containing substances areburned. Automobile exhaust gases also contribute to air pollution. Sulfur dioxide in theatmosphere reacts with moisture to form sulfurous acid, or is oxidized to sulfur trioxide,which forms sulfuric acid, causing acid rain.

使用

Sulfur Dioxide is a preservative, being a gas that dissolves in water to yield sulfurous acid. sulfite salts, such as sodium and potassium sulfite, sodium and potassium bisulfite, and sodium and potassium metabisulfite, yield free sulfurous acid at low ph. sulfur dioxide pre- vents the discoloration of foods by combining with the sugars and enzymes. it also inhibits bacterial growth. it is used in beverages, cherries, wines, and fruits.

使用

Preserving fruits, vegetables, etc.; disinfectant in breweries and food factories; bleaching textile fibers, straw, wicker ware, gelatin, glue, beet sugars. Solvent and reagent in organic synthesis.

調製方法

Sulfur dioxide can be made by burning sulfur, or by roasting sulfide ores such as pyrites, sphalerite, and cinnabar.

製造方法

Sulfur dioxide usually is prepared industrially by the burning in air or oxygen of sulfur or such compounds of sulfur as iron pyrite or copper pyrite. Large quantities of sulfur dioxide are formed in the combustion of sulfur-containing fuels. In the laboratory, the gas may be prepared by reducing sulfuric acid (H2SO4) to sulfurous acid (H2SO3), which decomposes into water and sulfur dioxide, or by treating sulfites (salts of sulfurous acid) with strong acids, such as hydrochloric acid, again forming sulfurous acid.

Aroma threshold values

Recognition: 50 to 100 ppm

空気と水の反応

Dissolves in water to form sulfurous acid, a corrosive liquid. Moist Sulfur dioxide is very corrosive due to the slow formation of sulfuric acid [Handling Chemicals Safely 1980 p. 876].

反応プロフィール

Sulfur dioxide is acidic. Reacts exothermically with bases such as amines, amides, metal oxides, and hydroxides. Frequently used as a reducing agent although Sulfur dioxide is not a powerful one. Acts as a reducing bleach to decolorize many materials. Can act as an oxidizing agent. Supports combustion of powdered aluminum [Mellor 5:209-212 1946-47]. Reacts explosively with fluorine [Mellor 2:1 1946-47]. Supports burning of manganese [Mellor 12:187 1946-47]. Readily liquefied by compression. Contact between the liquid and water may result in vigorous or violent boiling and extremely rapid vaporization. If the water is hot an explosion may occur. Pressures may build to dangerous levels if the liquid contacts water in a closed container [Handling Chemicals Safely 1980]. Supports incandescent combustion of monocesium acetylide, monopotassium acetylide, cesium oxide, iron(II) oxide, tin oxide, and lead oxide [Mellor]. Ethylene oxide and SO2 can react violently in pyridine solution with pressurization if ethylene oxide is in excess (Nolan, 1983, Case History 51).

危険性

Toxic by inhalation, strong irritant to eyes and mucous membranes, especially under pressure. Dangerous air contaminant and constituent of smog. Not permitted in meats and other sources of vitamin B1. U.S. atmospheric standard 0.140 ppm. Pulmonary function inhibitor and lower respiratory tract irritant. Questionable carcinogen.

健康ハザード

Sulfur dioxide may cause death or permanent injury after very short exposure to small quantities. 1,000 ppm causes death in from 10 minutes to several hours by respiratory depression. It is an eye and respiratory tract irritant. Persons with asthma, subnormal pulmonary functions or cardiovascular disease are at a greater risk.

健康ハザード

Exposures to sulfur dioxide cause adverse health effects to users and occupational workers. The gaseous sulfur dioxide is particularly irritating to the mucous membranes of the upper respiratory tract. Chronic exposure to sulfur dioxide produces dryness of the throat, cough, rhinitis, conjunctivitis, corneal burns, and corneal opacity. Acute exposure to high concentrations of sulfur dioxide may also result in death due to asphyxia. By contrast, chronic exposures to sulfur dioxide lead to nasopharyngitis, fatigue, and disturbances of the pulmonary function. Animals exposed to chronic doses of sulfur dioxide have shown thickening of the mucous layer in the trachea and also hypertrophy of goblet cells and mucous glands resembling the pathology of chronic bronchitis. It has been found that penetration of sulfur dioxide into the lungs is greater during mouth breathing than during nose breathing. In fact, an increase in the fl ow rate of the gas would markedly increase the penetration. Human subjects exposed for very brief periods to sulfur dioxide also showed alterations in pulmonary mechanics. More information on the adverse effects of sulfur dioxide and the manner of its potentiation in association with other chemicals may be found in literature.

健康ハザード

Exposure to sulfur dioxide can causesevere irritation of the skin, eyes, mucousmembranes, and respiratory system. Theeffects are coughing, choking, or suffocation;bronchoconstriction; and skin burn. A 10-minute exposure to 1000 ppm can be fatalto humans
LC50 value, inhalation (mice): 3000 ppm/30min (NIOSH 1986).

火災危険

Sulfur dioxide is a noncombustible substance (NFPA rating = 0).

火災危険

Containers may explode in heat of fire or they may rupture and release irritating toxic Sulfur dioxide. Sulfur dioxide has explosive properties when Sulfur dioxide comes in contact with sodium hydride; potassium chlorate at elevated temperatures; ethanol; ether; zinc ethylsulfurinate at very cool temperatures (-15C); fluorine; chlorine trifluoride and chlorates. Sulfur dioxide will react with water or steam to produce toxic and corrosive fumes. When the liquid is heated Sulfur dioxide may release irritating, toxic Sulfur dioxide gas. Avoid ammonia, monocesium or monopotassium acetylide; dicesium monoxide; iron (II) oxide; tin oxide; lead (IV) oxide; chromium; manganese; molten sodium, powder aluminum and rubidium. Sulfur dioxide has explosive properties when Sulfur dioxide comes in contact with sodium hydride; potassium chlorate at elevated temperatures; ethanol; ether; zinc ethylsulfurinate at very cool temperatures (-15C); fluorine; chlorine trifluoride and chlorates. Sulfur dioxide will react with water or steam to produce toxic and corrosive fumes. Hazardous polymerization may not occur.

燃焼性と爆発性

Sulfur dioxide is a noncombustible substance (NFPA rating = 0).

応用例(製薬)

Sulfur dioxide is used as an antioxidant for pharmaceutical injections. It is also used as a preservative and antioxidant in the food and cosmetics industries.

安全性プロファイル

A poison gas. Experimental reproductive effects. Human mutation data reported. Human systemic effects by inhalation: pulmonary vascular resistance, respiratory depression, and other pulmonary changes. Questionable carcinogen with experimental tumorigenic and teratogenic data. It chiefly affects the upper respiratory tract and the bronchi. It may cause edema of the lungs or glottis, and can produce respiratory paralysis. A corrosive irritant to eyes, skin, and mucous membranes. This material is so irritating that it provides its own warning of toxic concentration. Levels of 400-500 ppm are immediately dangerous to life. Its toxicity is comparable to that of hydrogen chloride. However, less than fatal concentration can be borne for fair periods of time with no apparent permanent damage. It is a common air contaminant. A nonflammable gas. It reacts violently with acrolein, Al, CsHC2, Cs2O, chlorates, ClF3, Cr, FeO, F2, Mn, KHC2, KClO3, Rb2C2, Na, Na2C2, SNOx diaminolithiumacetylene carbide. Will react with water or steam to produce toxic and corrosive fumes. Incompatible with halogens or interhalogens, lithium nitrate, metal acetylides, metal oxides, metals, polymeric tubing, potassium chlorate, sodium hydride.

安全性

Sulfur dioxide is used in food and pharmaceutical products. However, in large amounts, sulfur dioxide gas is highly irritant to the eyes, skin, and mucous membranes. Inhalation can lead to severe irritation of the respiratory tract. Direct contact with the liquid form may cause frostbite. Sulfur dioxide and sulfites may also cause allergic reactions and asthma.

職業ばく露

Sulfur dioxide is used in the manufacture of sodium sulfite, sulfuric acid; sulfuryl chloride; thionyl chloride; organic sulfonates; disinfectants, fumigants, glass, wine, ice, industrial and edible protein; and vapor pressure thermometers. It is also used in the bleaching of beet sugar, flour, fruit, gelatin, glue, grain, oil, straw, textiles, wicker ware; wood pulp; and wool; in the tanning of leather; in brewing and preserving; and in the refrigeration industry. Exposure may also occur in various other industrial processes as it is a by-product of ore smelting, coal and fuel oil combustion; paper manufacturing and petroleum refining.

貯蔵

Sulfur dioxide is noncorrosive and stable when dry. It is usually stored under pressure in cylinders, and should be kept in a cool, dry, well-ventilated area, away from flammable materials.

輸送方法

UN1079 Sulfur dioxide, Hazard Class: 2.3; Labels: 2.3-Poisonous gas, 8-Corrosive material, Inhalation Hazard Zone C. Cylinders must be transported in a secure upright position, in a well-ventilated truck. Protect cylinder and labels from physical damage. The owner of the compressed gas cylinder is the only entity allowed by federal law (49CFR) to transport and refill them. It is a violation of transportation regulations to refill compressed gas cylinders without the express written permission of the owner

純化方法

Dry it by bubbling through conc H2SO4 and by passage over P2O5, then through a glass-wool plug. Freeze it with liquid air and pump it to a high vacuum to remove dissolved gases. It is easily liquefied by compression (2.5atmospheres at 15o), or by passing it through a glass spiral column in a freezing mixture of ice and salt. It is a colourless liquid with a density of 1.434 at 0o, which on rapid evaporation forms a snow white solid. It could be used as a solvent in certain reactions. HARMFUL SUFFOCATING VAPOURS.

不和合性

Reacts with water to form sulfurous acid, a medium-strong acid. Reacts violently with ammonia, acrolein, acetylene; alkali metals; such as sodium, potassium, magnesium, and zinc; chlorine, ethylene oxide; amines, butadiene. Attacks many metals including aluminum, iron, steel, brass, copper, nickel; especially in presence of water or steam. Incompatible with halogens. Attacks plastics, rubber and coatings.

不和合性

Sulfur dioxide reacts vigorously with strong alkalis and oxidizing agents. The moist gas corrodes most metals. Sulfur dioxide is incompatible with chlorates, fluorine, interhalogens, powdered metals, metal oxides, metal acetylides, sodium hydroxide, and diethyl zinc. It is also incompatible with thiamine and gelatin.

廃棄物の処理

Return refillable compressed gas cylinders to supplier. Pass into soda ash solution, then add calcium hypochlorite; neutralize and flush to sewer with water (A-38).

予防処置

Occupational workers should be careful at workplaces because exposure to sulfur dioxide occurs from breathing it in the air. It affects the lungs and at high levels may result in burning of the nose and throat, breathing diffi culties, and severe airway obstructions.

規制状況(Regulatory Status)

GRAS listed. Accepted for use as a food additive in Europe. Included in the FDA Inactive Ingredients Database (IV infusions; injection solutions). Included in the Canadian List of Acceptable Non-medicinal Ingredients.

二酸化イオウ 上流と下流の製品情報

原材料

準備製品

2-クロロ-2-フェニルアセトフェノン スルホニルジフルオリド 塩酸ベンジダミン 2-ヨードベンゾイルクロリド 亜硫酸ジアンモニウム 2,2'-(1,3,4-オキサジアゾール-2,5-ジイル)ビス(1-アミノ-9,10-アントラセンジオン) 白金 2-アミノ-1-ナフタレンスルホン酸 セレン 硫酸ジブチル (R)-(+)-tert-ブチルスルフィンアミド 亜硫酸水素アンモニウム ドデカン酸ペンタクロロフェニル テトラヒドロチオフェン 1,1-ジオキシド 2-[4-クロロ-3-(クロロスルホニル)ベンゾイル]安息香酸 3-スルホレン 2-クロロベンゼンスルホンアミド 6-アミノ-4-ヒドロキシ-2-ナフタレンスルホン酸 オキソチオキソメタン エタンシラート 塩素(IV)ジオキシド バクガエキス 7-アニリノ-4-ヒドロキシ-2-ナフタレンスルホン酸 3-シアノプロペン酸メチル o-スルホベンズイミドナトリウム二水和物 チオホスゲン 酢酸α-(クロロカルボニル)ベンジル 3-[[3-(4-メトキシ-6-メチル-1,3,5-トリアジン-2-イル)ウレイド]スルホニル]チオフェン-2-カルボン酸メチル 1-[(o-クロロフェニル)スルホニル]-3-(4-メトキシ-6-メチル-1,3,5-トリアジン-2-イル)尿素 フェニルアセチル クロリド 1-ブロモ-2-ナフトール 酸化クロム ヒドロキシメタンスルフィン酸ナトリウム二水和物 亜塩素酸ナトリウム イソ酪酸 クロリド 2-(クロロスルホニル)安息香酸メチル フェニルアルシン オキシド

二酸化イオウ 生産企業

Global( 74)Suppliers
名前 電話番号 ファックス番号 電子メール 国籍 製品カタログ 優位度
Mainchem Co., Ltd.
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Hubei Jusheng Technology Co.,Ltd.
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027-59599243 sales@jushengtech.com CHINA 28236 58
Xiamen AmoyChem Co., Ltd
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86-13657291602
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Beijing dtftchem Technology Co., Ltd. 13651141086; 86(10)60275028、60275820
86 (10) 60270825 dtftchem@sina.com China 3393 62
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 info@energy-chemical.com China 44025 61
Chengdu XiYa Chemical Technology Co., Ltd. 4008-626-111
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Chengdu Ai Keda Chemical Technology Co., Ltd. 4008-755-333 ; 028-86676798 ; 028-86757656
028-86757656 aikeshiji@163.com China 9755 55
Cheng Du Micxy Chemical Co.,Ltd 028-85632863 028-64559668 18048500443
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Shanghai Aladdin Bio-Chem Technology Co.,LTD 021-20337333/400-620-6333
021-50323701 sale@aladdin-e.com China 24986 65

7446-09-5(二酸化イオウ)キーワード:


  • 7446-09-5
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  • siarkidwutlenek
  • SULPHUR DIOXIDE
  • 二酸化イオウ
  • 亜硫酸ガス
  • 二酸化硫黄
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