CX1723

无水柠檬酸粉末

anhydrous Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

• 别名: Citric acid
• 线性分子式: HOC(COOH)(CH₂COOH)₂
• CAS号: 77-92-9
• 分子量: 192.12
• Beilstein: 782061
• MDL號碼: MFCD00011669
• 分類程式碼代碼: 12352106
• 酶委員會索引編號: 201-069-1

属性

• agency: meets USP/NF
• 品質等級: 200
• 蒸汽壓力: <0.1 hPa ( 20 °C)
• 化驗: 99.5-100.5% dry basis (alkalimetric)
• 形狀: fine powder
• expl. lim.: 8 %, 65 °F
• 雜質: ≤0.005% Water-insoluble matter; ≤1% Water (Karl Fischer)
• sulfated ash (600 °C): ≤0.02%
• 顏色: white to almost white
• pH值: 1.7 (20 °C, 100 g/L in H₂O)
• pKa: (1) 3.13, (2) 4.76, (3) 6.4
• bp: 200 °C/1013 hPa (decomposition)
• mp: 153-159 °C (lit.)
• 溶解度: 1330 g/L
• 密度: 1.67 g/cm³ at 20 °C
• 負離子痕跡: chloride (Cl^-): ≤0.001%; oxalate (C₂O₄^2-): ≤0.036%; phosphate (PO₄^3-): ≤0.001%; sulfate (SO₄^2-): ≤0.002%
• 正離子痕跡: Fe: ≤0.0003%; Pb: ≤0.0002%
• 運輸包裝: ambient
• 儲存溫度: room temp
• SMILES 字串: OC(=O)CC(O)(CC(O)=O)C(O)=O
• InChI: 1S/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)
• InChI 密鑰: KRKNYBCHXYNGOX-UHFFFAOYSA-N

说明

應用

anhydrous Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

分析報告

Appearancewhite to almost white, fine powderAssay (alkalimetric on dried substance)99.5-100.5%Chloride (Cl)0.001% maxIdentity (IR-spectrum)passes testIron (Fe)0.0003% maxLead (Pb)0.0002% maxOxalate (C2O4)0.036% maxPhosphate (PO4)0.001% maxReadily carbonizable substancespasses testSulfate (SO4)0.002% maxSulfated ash (600°C)0.02% maxWater (acc. to Karl Fischer)1.0% maxWater-insoluble matter0.005% max

安全信息

• 象形圖: GHS07
• 訊號詞: Warning
• 危險聲明: H319,H335
• 防範說明: P261 - P264 - P271 - P280 - P304 + P340 + P312 - P305 + P351 + P338
• 危險分類: Eye Irrit. 2 - STOT SE 3
• 標靶器官: Respiratory system
• 儲存類別代碼: 11 - Combustible Solids
• 水污染物質分類（WGK）: WGK 1
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable