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くえん酸

くえん酸 化学構造式
77-92-9
CAS番号.
77-92-9
化学名:
くえん酸
别名:
くえん酸;β-ヒドロキシトリカルバリル酸;シトレッテン;2-ヒドロキシ-1,2,3-プロパントリカルボン酸;2-ヒドロキシプロパン-1,2,3-トリカルボン酸;アシレッテン;シトロ;枸櫞酸;3-カルボキシ-3-ヒドロキシペンタン-1,5-二酸;くえん酸,無水;くえん酸(無水);2W/V% くえん酸溶液;クエン酸 TESTED ACCORDING TO PH.EUR.,ANHYDROUS,GRIT;くえん酸〔無水〕;無水クエン酸;くえん酸、無水
英語化学名:
Citric acid
英語别名:
Citro;E 330;F 4020;Suby G;INS 330;nsc30279;CheMfill;BETZ 0623;BETZ 6251;Citretten
CBNumber:
CB9854361
分子式:
C6H8O7
分子量:
192.12
MOL File:
77-92-9.mol

くえん酸 物理性質

融点 :
153-159 °C(lit.)
沸点 :
248.08°C (rough estimate)
比重(密度) :
1.542
蒸気圧:
<0.1 hPa (20 °C)
屈折率 :
1.493~1.509
FEMA :
2306 | CITRIC ACID
闪点 :
100 °C
貯蔵温度 :
Store at RT.
溶解性:
H2O: 1 M at 20 °C, clear, colorless
外見 :
grit
酸解離定数(Pka):
3.14(at 20℃)
色:
White
PH:
1.0-2.0 (25℃, 1M in H2O)
爆発限界(explosive limit):
8%, 65°F
水溶解度 :
750 g/L (20 ºC)
Sensitive :
Hygroscopic
極大吸収波長 (λmax):
λ: 260 nm Amax: 0.20
λ: 280 nm Amax: 0.10
Merck :
14,2326
BRN :
782061
安定性::
Stable. Incompatible with bases, strong oxidizing agents, reducing agents, metal nitrates.
CAS データベース:
77-92-9(CAS DataBase Reference)
NISTの化学物質情報:
1,2,3-Propanetricarboxylic acid, 2-hydroxy-(77-92-9)
EPAの化学物質情報:
1,2,3-Propanetricarboxylic acid, 2-hydroxy-(77-92-9)
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  Xi,C,T
Rフレーズ  41-36/37/38-36/38-37/38-34-36-35-61-60
Sフレーズ  26-39-37/39-24/25-36/37/39-45-36-53
RIDADR  UN 1789 8/PG 3
WGK Germany  1
RTECS 番号 GE7350000
9
TSCA  Yes
HSコード  2918 14 00
有毒物質データの 77-92-9(Hazardous Substances Data)
毒性 LD50 in mice, rats (mmol/kg): 5.0, 4.6 i.p. (Gruber, Halbeisen)
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
H303 飲み込むと有害のおそれ 急性毒性、経口 5 P312
H315 皮膚刺激 皮膚腐食性/刺激性 2 警告 P264, P280, P302+P352, P321,P332+P313, P362
H318 重篤な眼の損傷 眼に対する重篤な損傷性/眼刺激 性 1 危険 P280, P305+P351+P338, P310
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。
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。
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。
P337+P313 眼の刺激が続く場合:医師の診断/手当てを受けること。
P405 施錠して保管すること。

くえん酸 価格 もっと(66)

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) W01CHDASB-00003683 くえん酸
Citric Acid
77-92-9 100mg ¥19300 2018-12-26 購入
富士フイルム和光純薬株式会社(wako) W01CHDASB-00003683 くえん酸
Citric Acid
77-92-9 250mg ¥32800 2018-12-26 購入
東京化成工業 C1949 くえん酸 >98.0%(T)
Citric Acid >98.0%(T)
77-92-9 500g ¥1900 2018-12-04 購入
関東化学株式会社(KANTO) 08309-00 くえん酸 >99.0%(T)
Citric acid >99.0%(T)
77-92-9 500g ¥1900 2018-12-13 購入
関東化学株式会社(KANTO) 22034-1A くえん酸(無水)
Citric acid, anhydrous
77-92-9 100g ¥5400 2018-12-13 購入

くえん酸 化学特性,用途語,生産方法

化学的特性

Citricacid,(COOH)CH2C(OHXCOOH)CH2COOH, also known as 2-hydroxy- l,2,3-propane tricarboxylic acid, is a colorless crystalline solid. Citric acid is soluble in water and alcohol. It is found in many plants, especially citrus fruits. The juice of unripe lemonsis a commercial source of citric acid.The reaction of calcium citrate and dilute sulfuric acid yields citric acid and calcium sulfate,which maybe separated by filtration. The food industry uses citric acid as a flavoring agent and as an antioxidant. Citric acid, formulated with propylene glycol and butylated hydroxy anisol,is used as a stabilizer for fats, greases,and tallow. Etching,textile dyeing, and printing operations use citric acid in various applications, and it is also used to adjust the pH in certain electroplating baths.

使用

Citric acid is a weak organic acid that is known as a commodity chemical, as more than a million tonnes are produced every year by mycological fermentation on an industrial scale using crude sugar sol utions, such as molasses and strains of Aspergillus niger. Citric acid is widely distributed in plants and in animal tissues and fluids and exist in greater than grace amounts in variety of fruits and vegetables, most notably in citrus fruits such as lemon and limes. Citric acid is mainly used as an acidifier, flavoring agent and chelating agent.

使用

Used in sequestering agents for trace metals; determination of citrate-soluble phosphorus pentoxide.

使用

citric acid has astringent and anti-oxidant properties. It can also be used as a product stabilizer, pH adjuster, and preservative with a low sensitizing potential. It is not usually irritating to normal skin, but it can cause burning and redness when applied to chapped, cracked, or otherwise inflamed skin. It is derived from citrus fruits.

使用

Citric Acid is an acidulant and antioxidant produced by mold fer- mentation of sugar solutions and by extraction from lemon juice, lime juice, and pineapple canning residue. it is the predominant acid in oranges, lemons, and limes. it exists in anhydrous and mono- hydrate forms. the anhydrous form is crystallized in hot solutions and the monohydrate form is crystallized from cold (below 36.5°c) solutions. anhydrous citric acid has a solubility of 146 g and mono- hydrate citric acid has a solubility of 175 g/100 ml of distilled water at 20°c. a 1% solution has a ph of 2.3 at 25°c. it is a hygroscopic, strong acid of tart flavor. it is used as an acidulant in fruit drinks and carbonated beverages at 0.25–0.40%, in cheese at 3–4%, and in jellies. it is used as an antioxidant in instant potatoes, wheat chips, and potato sticks, where it prevents spoilage by trapping the metal ions. it is used in combination with antioxidants in the processing of fresh frozen fruits to prevent discoloration.

使用

An organic acid obtained from lemon or lime. The colorless crystals of this acid are soluble in water and alcohol but less so in ether. It was used as a chemical restrainer particularly in developers for the collodion process and in silver nitrate solutions used for sensitizing salted and albumen papers.

定義

ChEBI: A tricarboxylic acid that is propane-1,2,3-tricarboxylic acid bearing a hydroxy substituent at position 2. It is an important metabolite in the pathway of all aerobic organisms.

Biotechnological Production

Fermentation is the technology of choice for citric acid synthesis. Different bacteria (e.g. Arthrobacter paraffinens and Bacillus licheniformis), filamentous fungi (e.g. Aspergilus niger and Penicillium citrinum) and yeasts (e.g. Candida tropicalis and Yarrowia lipolytica) are able to produce citric acid. Due to high productivity and easy handling, citric acid is usually produced by fermentation with A. niger. For example, a product concentration of 114 g.L-1 within 168 h has been reached by cultivation of A. niger GCMC 7 on cane molasses . On the industrial scale, submerged cultivation, surface fermentation and solid-state fermentation are used.
In general, molasses, starch hydrolyzate and starch are used as substrates. However, there are various studies for alternative raw materials. Solid-state fermentation of inexpensive agricultural wastes is one possibility. For example, high yields up to 88 % have been achieved using grape pomace as substrate. Lowering the cost of product recovery is crucial. Different methods using precipitation, solvent extraction, adsorption, or in situ product recovery have been described. One interesting process could be the in situ crystallization of citric acid during fermentation to improve the economics.

一般的な説明

Colorless, odorless crystals with an acid taste. Denser than water.

空気と水の反応

The pure material is moisture sensitive (undergoes slow hydrolysis) Water soluble.

反応プロフィール

Citric acid reacts with oxidizing agents, bases, reducing agents and metal nitrates . Reactions with metal nitrates are potentially explosive. Heating to the point of decomposition causes emission of acrid smoke and fumes [Lewis].

健康ハザード

Inhalation of dust irritates nose and throat. Contact with eyes causes irritation.

火災危険

Behavior in Fire: Melts and decomposes. The reaction is not hazardous.

生物活性

Commonly used laboratory reagent

安全性プロファイル

Poison by intravenous route. Moderately toxic by subcutaneous and intraperitoneal routes. Mildly toxic byingestion. A severe eye and moderate skin irritant. An irritating organic acid, some allergenic properties. Combustible liquid. Potentially explosive reaction with metal nitrates. When heated to decomposition it emits acrid smoke and fumes.

外観

白色~ほとんど白色, 結晶~結晶性粉末

溶解性

水に可溶。アルコールに可溶。水に極めて溶けやすく、エタノールに溶けやすく、ジエチルエーテルにやや溶けにくい。

用途

酸味料、清涼飲料水原料、抗酸化剤

用途

医薬品、食品等の原料。

定義

本品は、次の化学式で表される有機酸である。

化粧品の成分用途

pH調整剤、キレート剤、香料

くえん酸 上流と下流の製品情報

原材料

準備製品


くえん酸 生産企業

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career henan chemical co
+86-371-86658258
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77-92-9(くえん酸)キーワード:


  • 77-92-9
  • anhydrouscitricacid
  • beta-Hydroxytricarballylic acid
  • beta-hydroxytricarballylicacid
  • beta-hydroxy-tricarboxylicacid
  • AMMONIACAL AMMONIUM CHLORIDE BUFFER
  • BETZ 6251
  • BETZ 0623
  • BORIC ACID-POTASSIUM CHLORIDE-SODIUM HYDROXIDE BUFFER
  • BUFFER CONCENTRATE, PH 7.00
  • BUFFER CONCENTRATE, PH 8.00
  • BUFFER CONCENTRATE, PH 9.00
  • BUFFER CONCENTRATE, PHOSPHATE/SODIUM HYDROXIDE
  • BUFFER CONCENTRATE, POTASSIUM CHLORIDE/SODIUM HYDROXIDE
  • BUFFER CONCENTRATE, BORATE/HYDROCHLORIC ACID
  • BUFFER CONCENTRATE, BORIC ACID/POTASSIUM CHLORIDE/SODIUM HYDROXIDE
  • BUFFER CONCENTRATE, CITRATE/HYDROCHLORIC ACID
  • BUFFER CONCENTRATE, CITRATE/SODIUM HYDROXIDE
  • BUFFER CONCENTRATE, GLYCINE/HYDROCHLORIC ACID
  • BUFFER CONCENTRATE, PH 4.00
  • BUFFER CONCENTRATE, PH 5.00
  • BUFFER CONCENTRATE, PH 1.00
  • BUFFER CONCENTRATE, PH 10.00
  • BUFFER CONCENTRATE, PH 11.00
  • BUFFER CONCENTRATE, PH 12.00
  • BUFFER CONCENTRATE, PH 13.00
  • BUFFER CONCENTRATE, PH 2.00
  • BUFFER CONCENTRATE, PH 3.00
  • BUFFER SOLUTION, AMMONIUM CHLORIDE/AMMONIA
  • BUFFER SOLUTION, BORIC ACID/POTASSIUM CHLORIDE-SODIUM CHLORIDE
  • BUFFER SOLUTION, BORIC ACID/POTASSIUM CHLORIDE-SODIUM HYDROXIDE
  • くえん酸
  • β-ヒドロキシトリカルバリル酸
  • シトレッテン
  • 2-ヒドロキシ-1,2,3-プロパントリカルボン酸
  • 2-ヒドロキシプロパン-1,2,3-トリカルボン酸
  • アシレッテン
  • シトロ
  • 枸櫞酸
  • 3-カルボキシ-3-ヒドロキシペンタン-1,5-二酸
  • くえん酸,無水
  • くえん酸(無水)
  • 2W/V% くえん酸溶液
  • クエン酸 TESTED ACCORDING TO PH.EUR.,ANHYDROUS,GRIT
  • くえん酸〔無水〕
  • 無水クエン酸
  • くえん酸、無水
  • 代謝産物
  • 抗凝固薬
  • 殺菌薬
  • 着香料
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