水和物
- 化学名:水和物
- 英語化学名:Water
- CAS番号:7732-18-5
- 分子式:H2O
- 分子量:18.01
- EINECS:231-791-2
- Mol File:7732-18-5.mol
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水和物 性質
- 融点 318 °C(lit.)
- 沸点 100 °C(lit.)
- 比重(密度) 0.998 g/cm3 (20℃)
- 蒸気密度<1 (vs air)
- 蒸気圧3 mm Hg ( 37 °C)
- 屈折率 n
20/D 1.34(lit.)
- 闪点 100°C
- 貯蔵温度 2-8°C
- 溶解性H2O: 1 M at 20 °C, clear, colorless
- 酸解離定数(Pka)pKa 13.996±0.001(H2O t = 25.00 I = 0.000) (Uncertain)
- 外見 powder
- 色White to off-white
- 比重1.000 (20/20℃)
- PH14 (H2O, 20°C)
- Relative polarity9
- 水溶解度 Soluble in water. Insoluble in polar liquids.
- 極大吸収波長 (λmax)λ: 205 nm Amax: 0.01
λ: 210 nm Amax: 0.01
λ: 250-400 nm Amax: 0.005 - Merck 14,10039
- BRN 2050024
- 安定性：Stable. Incompatible with reactive metals.
- CAS データベース7732-18-5(CAS DataBase Reference)
- EPAの化学物質情報Water (7732-18-5)
- Language：EnglishProvider：SigmaAldrich
- Language：EnglishProvider：ACROS
- Language：EnglishProvider：ALFA
- 外観無色澄明の液体
- 定義本品は、次の化学式で表される液状物質である。
- 溶解性メタノール、エタノール、アセトン及び1,4-ジオキサンに極めて溶けやすく、ベンゼン、クロロホルム及び四塩化炭素には極めて溶けにくい。
- 用途アミノ酸配列分析用溶媒。
- 用途ICP-MS等超微量分析用の水。
- 用途一般分析、試液調製溶剤、合成原料。
- 用途液体クロマトグラフ分析用溶離液及び溶離液調製用。
- 用途一般分析、合成原料、試液調製溶剤、写真用溶剤等。
- 用途紫外吸収、蛍光分析用溶媒。
- 化粧品の成分用途口腔ケア剤、皮膚コンディショニング剤、溶剤
- 効能溶解剤
- 商品名大塚蒸留水 (大塚製薬工場); 注射用水 (ニプロ); 注射用水 (光製薬); 注射用水 (光製薬); 注射用水 (光製薬); 注射用水 (扶桑薬品工業); 注射用水 (扶桑薬品工業); 注射用水 (扶桑薬品工業); 注射用水 (扶桑薬品工業); 注射用水 (日新製薬－山形); 注射用水 (日新製薬－山形); 注射用水 (日新製薬－山形); 注射用水 (日新製薬－山形); 注射用水 (日新製薬－山形); 注射用水 (日新製薬－山形); 滅菌精製水 (シオエ製薬); 滅菌精製水 (ヤクハン製薬); 滅菌精製水 (ヤクハン製薬); 滅菌精製水 (ヤクハン製薬); 滅菌精製水 (ヤクハン製薬); 滅菌精製水 (健栄製薬); 滅菌精製水 (光製薬); 滅菌精製水 (吉田製薬); 滅菌精製水 (吉田製薬); 滅菌精製水 (大成薬品工業); 滅菌精製水 (日興製薬); 滅菌精製水 (日興製薬); 滅菌精製水 (日興製薬); 精製水 (サンケミファ); 精製水 (シオエ製薬); 精製水 (中北薬品); 精製水 (健栄製薬); 精製水 (吉田製薬); 精製水 (大成薬品工業); 精製水 (小堺製薬); 精製水 (山善製薬); 精製水 (恵美須薬品化工); 精製水 (日医工); 精製水 (日医工); 精製水 (日興製薬); 精製水 (日興製薬); 精製水 (日興製薬); 精製水 (日興製薬); 精製水 (日興製薬); 精製水 (昭和製薬); 精製水 (昭和製薬); 精製水 (東海製薬); 精製水 (東豊薬品); 精製水 (高杉製薬); 蒸留水 (ケミックス); 蒸留水 (ケミックス); 蒸留水 (共和クリティケア)
- 化学的特性colourless liquid
- 使用For use in the preparation of cell culture media, and cell suspension and washing solutions.
- 使用For use in embryo manipulation.
- 使用water is listed also as catalyzed, deionized, demineralized, distilled, pure spring, and purified water. Water is an important skin component and is essential for its proper functioning. It is the most common ingredient used in cosmetic formulations and, therefore, is generally listed first on product labels. Water is usually processed to eliminate hardness and minerals, and to avoid product contamination.
- 使用Water is a colorless, odorless, tasteless liquid formed by the combi- nation of two hydrogen and one oxygen atoms. it allows substances to dissolve and functions as a solvent, dispersing medium, hydrate, and promoter of chemical changes. it is a major constituent in meats, fruits, and vegetables. distilled water is obtained by conden- sation of water vapor.
- 定義ChEBI: An oxygen hydride consisting of an oxygen atom that is covalently bonded to two hydrogen atoms.
- 純化方法Conductivity water (specific conductance ca 10-7 mho) can be obtained by distilling water in a steam-heated tin-lined still, then, after adding 0.25% of solid NaOH and 0.05% of KMnO4, distilling once more from an electrically heated Barnstead-type still, taking the middle fraction into a Jena glass bottle. During these operations suitable traps must be used to protect against entry of CO2 and NH3. Water, only a little less satisfactory for conductivity measurements (but containing traces of organic material) can be obtained by passing ordinary distilled water through a mixed bed ion-exchange column containing, for example, Amberlite resins IR 120 (cation exchange) and IRA 400 (anion exchange), or Amberlite MB-1. This treatment is also a convenient one for removing traces of heavy metals. (The metals Cu, Zn, Pb, Cd and Hg can be tested for by adding pure concentrated ammonia to 10mL of sample and shaking vigorously with 1.2mL of 0.001% dithizone in CCl4. Less than 0.1Yg of metal ion will impart a faint colour to the CCl4 layer.) For almost all laboratory purposes, simple distillation yields water of adequate purity, and most of the volatile contaminants such as ammonia and CO2 are removed if the first fraction of distillate is discarded. Most laboratories have glass stills that “doubly” or “trebly” distil water. [See “water” in Chapter 1.]
水和物サプライヤー
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