| 词条 | Chromotropic acid |
| 释义 |
| verifiedrevid = 443522380 | Name = Chromotropic acid | ImageFile = Chromotropical acid.svg | ImageSize = 200px | ImageName = Skeletal formula | ImageFile1 = Chromotropic-acid-3D-balls.png | ImageSize1 = 210px | ImageName1 = Ball-and-stick model | IUPACName = 4,5-Dihydroxynaphthalene-2,7-disulfonic acid[1] | Section1 = {{Chembox Identifiers | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 60557 | KEGG_Ref = {{keggcite|correct|kegg}} | KEGG = C11323 | InChI = 1/C10H8O8S2/c11-8-3-6(19(13,14)15)1-5-2-7(20(16,17)18)4-9(12)10(5)8/h1-4,11-12H,(H,13,14,15)(H,16,17,18) | InChIKey = HLVXFWDLRHCZEI-UHFFFAOYAH | ChEMBL_Ref = {{ebicite|correct|EBI}} | ChEMBL = 144298 | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChI = 1S/C10H8O8S2/c11-8-3-6(19(13,14)15)1-5-2-7(20(16,17)18)4-9(12)10(5)8/h1-4,11-12H,(H,13,14,15)(H,16,17,18) | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = HLVXFWDLRHCZEI-UHFFFAOYSA-N | CASNo_Ref = {{cascite|correct|CAS}} | CASNo = 148-25-4 | ChEBI_Ref = {{ebicite|correct|EBI}} | ChEBI = 1751 | PubChem = 67221 | UNII = S596OD720M | Beilstein = 1827764 | SMILES = O=S(=O)(O)c1cc(O)c2c(c1)cc(cc2O)S(=O)(=O)O }} | Section2 = {{Chembox Properties | C=10 | H=8 | O=8 | S=2 | Density = | MeltingPt = | BoilingPt = | pKa=5.36, 15.6[2] | Section7 = {{Chembox Hazards | GHSPictograms = {{GHS07}} | GHSSignalWord = Warning | HPhrases = {{H-phrases|315|319|335}} | PPhrases = {{P-phrases|261|264|271|280|302+352|304+340|305+351+338|312|321|332+313|337+313|362|403+233|405|501}} }} Chromotropic acid is a chemical compound with the formula (HO)2C10H4(SO3H)2. It can be used for as a reagent in the quantitative determination of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D).[3] Chromotropic acid is also used for testing for the presence of formaldehyde.[4][5] The usefulness of this reagent in quantitative determination is the formation of a red coloration (peaking at 580 nm wavelength) when chromotropic acid in 50% sulfuric acid reacts with formaldehyde. The coloration is specific to this aldehyde and is not produced from other organic species such as ketones and carboxylic acids. The NIOSH Formaldehyde method #3500 is the reference analytical standard that uses chromotropic acid. References1. ^Safety (MSDS) data 2. ^{{cite book | author = Dawson, R.M.C.|display-authors=et al | title = Data for Biochemical Research | location = Oxford | publisher = Clarendon Press | date = 1959}} 3. ^{{cite journal | title = The Use of Chromotropic Acid for the Quantitative Determination of 2,4-Dichlorophenoxy-acetic Acid | url = http://www.plantphysiol.org/cgi/reprint/27/4/822 | journal = Plant Physiology | author = Duane Letourneau and Norman Krog | volume = 27 | issue = 4 | pages = 822–7 | date = 1952| pmid = 16654508 | pmc = 547994 }} 4. ^{{cite journal | journal = Journal of the American Institute for Conservation | url = http://cool.conservation-us.org/jaic/articles/jaic33-01-004_3.html | date = 1994 | volume = 33 | issue = 1 | pages = 47–53 | title = Two Tests for the Detection of Volatile Organic Acids and Formaldehyde | author = Jingping Zhang, David Thickett, and Lorna Green}} 5. ^{{cite journal | url = http://www.ijdvl.com/article.asp?issn=0378-6323;year=2004;volume=70;issue=6;spage=342;epage=344;aulast=Rao | journal = Indian Journal of Dermatology, Venereology and Leprology | date =2004 | volume=70 | issue=6 | pages = 342–344 | author = Sanath Rao, Shruthakirthi D Shenoy, Suraj Davis, Sudharkar Nayak | title = Detection of Formaldehyde in Textiles by Chromotropic Acid Method}} 3 : 1-Naphthols|Naphthalenesulfonic acids|Polyphenols |
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