About: Mordant brown 33

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Mordant brown 33 (MB33) is 2,4-diamino-5-(2-hydroxy-5-nitrophenylazo) benzene sulfonic acid sodium salt. The UV-Visible spectra of MB33 in all mixtures investigated display three absorption bands in 50% ethanol within all the pH ranges 1.5-13.3 using Thiel buffer the maximum absorption of these bands is located at 438, 453 and a double head band at 410 and 475 nm . The band at 438 nm corresponds to absorption attributed to the cationic form (LH6) of MB33 (whereas L indicates to the parent structure of ligand without hydrogen protons) and disappears at pH > 3.0. The band at 453 nm corresponds to the absorption of the neutral form of the reagent (LH5-). The double head bands at 410 and 475 nm correspond to the di-anionic (LH42−) of MB33.

Attributes	Values
rdf:type	Thing dul:ChemicalObject chemical substance Chemical compound chemical compound
rdfs:label	Mordant brown 33 (en) Castanho mordente 33 (pt)
rdfs:comment	Mordant brown 33 (MB33) is 2,4-diamino-5-(2-hydroxy-5-nitrophenylazo) benzene sulfonic acid sodium salt. The UV-Visible spectra of MB33 in all mixtures investigated display three absorption bands in 50% ethanol within all the pH ranges 1.5-13.3 using Thiel buffer the maximum absorption of these bands is located at 438, 453 and a double head band at 410 and 475 nm . The band at 438 nm corresponds to absorption attributed to the cationic form (LH6) of MB33 (whereas L indicates to the parent structure of ligand without hydrogen protons) and disappears at pH > 3.0. The band at 453 nm corresponds to the absorption of the neutral form of the reagent (LH5-). The double head bands at 410 and 475 nm correspond to the di-anionic (LH42−) of MB33. (en) Castanho mordente 33 (MB33, do inglês Mordant brown 33) é o composto orgânico, corante azo-composto, de fórmula C12H10N5NaO6S, quimicamente, sal de sódio de ácido 2,4-diamino-5-(2-hidroxi-5-nitrofenilazo) benzeno sulfônico e massa molecular 375.29. Classificado com o número CAS 3618-62-0, C.I. 13250 e CBNumber CB3216185. (pt)
foaf:depiction
dcterms:subject	Nitrobenzenes Phenols Azo dyes Benzenesulfonates Organic sodium salts
Wikipage page ID	27219212 (xsd:integer)
Wikipage revision ID	1105285962 (xsd:integer)
Link from a Wikipage to another Wikipage	Proton dbr:Benzene Hydrogen Nitrobenzenes Phenols Ligand Visible spectrum Ethanol Absorption band Azo dyes Benzenesulfonates Organic sodium salts Sulfonic acid Reagent Ultraviolet Cationic Sodium salt
sameAs	Mordant brown 33 Mordant brown 33 Mordant brown 33 Mordant brown 33 Mordant brown 33
dbp:wikiPageUsesTemplate	dbt:Chembox dbt:Chembox_Hazards dbt:Chembox_Identifiers dbt:Chembox_Properties dbt:Organic-compound-stub dbt:Refimprove dbt:Reflist dbt:Cascite dbt:Chemspidercite dbt:Fdacite dbt:GHS05 dbt:GHS07 dbt:GHS08 dbt:H-phrases dbt:P-phrases dbt:Stdinchicite
thumbnail	wiki-commons:Special:FilePath/Mordant_Brown_33.png?width=300
ImageFile	Mordant Brown 33.png (en)
ImageName	Wireframe model of a mordant brown 33 tautomer (en)
imagesize	200 (xsd:integer)
OtherNames	Mordant brown 33 (en) Chrome Brown RH (en) Sodium 2,4-diamino-5-[2-hydrazin-1-yl]benzenesulfonate (en)
SystematicName	Sodium 2,4-diamino-5-[2-hydrazin-1-yl]benzene-1-sulfonate (en)
Verifiedfields	changed (en)
verifiedrevid	462253668 (xsd:integer)
Watchedfields	changed (en)
has abstract	Mordant brown 33 (MB33) is 2,4-diamino-5-(2-hydroxy-5-nitrophenylazo) benzene sulfonic acid sodium salt. The UV-Visible spectra of MB33 in all mixtures investigated display three absorption bands in 50% ethanol within all the pH ranges 1.5-13.3 using Thiel buffer the maximum absorption of these bands is located at 438, 453 and a double head band at 410 and 475 nm . The band at 438 nm corresponds to absorption attributed to the cationic form (LH6) of MB33 (whereas L indicates to the parent structure of ligand without hydrogen protons) and disappears at pH > 3.0. The band at 453 nm corresponds to the absorption of the neutral form of the reagent (LH5-). The double head bands at 410 and 475 nm correspond to the di-anionic (LH42−) of MB33. (en) Castanho mordente 33 (MB33, do inglês Mordant brown 33) é o composto orgânico, corante azo-composto, de fórmula C12H10N5NaO6S, quimicamente, sal de sódio de ácido 2,4-diamino-5-(2-hidroxi-5-nitrofenilazo) benzeno sulfônico e massa molecular 375.29. Classificado com o número CAS 3618-62-0, C.I. 13250 e CBNumber CB3216185. (pt)
prov:wasDerivedFrom	wikipedia-en:Mordant_brown_33?oldid=1105285962&ns=0
page length (characters) of wiki page	4097 (xsd:nonNegativeInteger)
alternative name	Mordant brown 33 (en) Chrome Brown RH (en) Sodium 2,4-diamino-5-[2-(3-nitro-6-oxocyclohexa-2,4-dien-1-ylidene)hydrazin-1-yl]benzenesulfonate (en)
IUPAC name	Sodium 2,4-diamino-5-[2-(3-nitro-6-oxocyclohexa-2,4-dien-1-ylidene)hydrazin-1-yl]benzene-1-sulfonate (en)
foaf:isPrimaryTopicOf	wikipedia-en:Mordant_brown_33
is Link from a Wikipage to another Wikipage of	List of dyes Mordant Brown 33 Sodium salts
is Wikipage redirect of	Mordant Brown 33
is foaf:primaryTopic of	wikipedia-en:Mordant_brown_33

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