| 項(xiàng)目ltem                 酸堿指示劑 | 
		
			| (acid-base indicator) | 
		
			| pH變色域Visual transition                  6.0(黃)~7.6(藍(lán)) | 
		
			| 質(zhì)量吸收系數(shù)Mass absorptivity,L/cm·g      ≥52.0 | 
		
			| 乙醇溶解試驗(yàn)Solubility(in ethanol)         合格 | 
		
			| 灼燒殘?jiān)?以硫酸鹽計(jì))Ignition residue,%    ≤0.3 | 
		
			|  | 
		
			|  | 
		
			| 項(xiàng)目                                     ACS級,95 % | 
		
			| (ACS, Dye content 95 %) | 
		
			| 外觀Appearance                             粉棕色至紫色結(jié)晶粉末 | 
		
			| 紅外光譜鑒別Infrared spectrometry          和對照品匹配 | 
		
			| 染料含量Dye content(HPLC)                 ≥95% | 
		
			| 澄清度Claroty of solution                  合格 | 
		
			| 變色范圍Visual transition interval         pH 6.0(Yellow-Green)-pH 6.7(Green)-pH 7.6 (Blue) | 
		
			| Wavelength                                 419- 425 nm | 
		
			| c = 0.02g/L; Methanol | 
		
			| Extinction Coefficient                     17,000 | 
		
			| Wavelength                                 326- 332 nm | 
		
			| Extinction Coefficient                     8,000 | 
		
			| Wavelength                                 279- 285 nm | 
		
			| Extinction Coefficient                     9,000 酸堿指示劑,吸附指示劑,色譜分析用。 |