词条 | Nitrazine |
释义 |
| verifiedrevid = 421100991 | ImageFile=Nitrazine.png | ImageSize=200px | ImageFile1=Nitrazine ball-and-stick.png | IUPACName=(3E)-3-[(2,4-Dinitrophenyl)hydrazono]-4-oxonaphthalene-2,7-disulfonic acid | OtherNames=Nitrazine yellow; Phenaphthazine |Section1={{Chembox Identifiers | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 5288340 | InChI = 1/C16H10N4O11S2/c21-16-11-3-2-10(32(26,27)28)5-8(11)6-14(33(29,30)31)15(16)18-17-12-4-1-9(19(22)23)7-13(12)20(24)25/h1-7,17H,(H,26,27,28)(H,29,30,31)/b18-15- | InChIKey = IHRSXGONVFFQQF-SDXDJHTJBN | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChI = 1S/C16H10N4O11S2/c21-16-11-3-2-10(32(26,27)28)5-8(11)6-14(33(29,30)31)15(16)18-17-12-4-1-9(19(22)23)7-13(12)20(24)25/h1-7,17H,(H,26,27,28)(H,29,30,31)/b18-15- | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = IHRSXGONVFFQQF-SDXDJHTJSA-N | CASNo_Ref = {{cascite|correct|??}} | CASNo=1716-22-9 | PubChem=6911856 | SMILES = [O-][N+](=O)c1ccc(c([N+]([O-])=O)c1)N/N=C3/C(=C\\c2c(ccc(c2)S(=O)(=O)O)C3=O)S(=O)(=O)O }} |Section2={{Chembox Properties | Formula=C16H10N4O11S2 | MolarMass=498.40 g/mol | Appearance= | Density= | MeltingPt= | BoilingPt= | Solubility= |Section3={{Chembox Hazards | MainHazards= | FlashPt= | AutoignitionPt = }} Nitrazine or phenaphthazine is a pH indicator dye often used in medicine. More sensitive than litmus, nitrazine indicates pH in the range of 4.5 to 7.5. Nitrazine is usually used as the disodium salt. Use{{pH_indicator_template|indicator_name=Nitrazine|low_pH=4.5|high_pH=7.5|low_pH_color=yellow|high_pH_color=blue|high_pH_text=white}}
This test, however, can produce false positives. If blood gets in the sample or if there is an infection present, the pH of the vaginal fluid may be higher than normal. Semen also has a higher pH, so recent vaginal intercourse can produce a false reading.
References1. ^{{cite web|url=http://cpmclabinfo.cpmc.columbia.edu/chapter/mono/pc000300.htm|title=Point-of-Care Testing, Fecal pH Measurement|deadurl=yes|archiveurl=https://web.archive.org/web/20070703015100/http://cpmclabinfo.cpmc.columbia.edu/chapter/mono/pc000300.htm|archivedate=2007-07-03|df=}} 6 : Female genital procedures|Stool tests|PH indicators|Nitrobenzenes|Naphthalenesulfonic acids|Anilines |
随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识,基本涵盖了大多数领域的百科知识,是一部内容自由、开放的电子版国际百科全书。