74-39-5O=[N+]([O-])c1ccc(N=Nc2ccc(O)cc2O)cc1NGPGYVQZGRJHFJ-UHFFFAOYSA-N4-(4-nitrophenylazo)resorcinol is an azobenzene in which the phenyl rings are 4-nitro- and 2,4-dihydroxy-substituted respectively. It is a member of azobenzenes, a member of resorcinols and a C-nitro compound.
This chemical does not meet GHS hazard criteria for 4.3% (2 of 46) of reports.
Warning
H315 (95.7%): Causes skin irritation [Warning Skin corrosion/irritation]
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 46 reports by companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
解説マグネソン,赤褐色の粉末.分解点199~200 ℃.水に難溶,アルカリ性水溶液に易溶(紫色),エタノール,アセトンに可溶.水酸化マグネシウムのコロイド状沈殿に吸着され,レーキをつくり青色を呈する.反応は鋭敏で,マグネシウムの検出用試薬として用いられる.pH 11.0以下で黄色,pH 13.0以上で紫色を呈するので,酸塩基指示薬としても用いられる.森北出版「化学辞典(第2版)
用途非水滴定用指示薬。カルボン酸, アミノ酸, アンモニウム塩, バルビツール酸, エノール, スルホンアミド, アミノフェノール等が定量対象となる。なお、滴定溶媒はジメチルホルムアミド, ピリジン, エチレングリコール等を用い、カリウムメトキシド-ベンゼン-メタノール溶液で滴定する。
説明Oxygen violet can be prepared by one-step reaction of p-nitroaniline and 1,3-benzenediol. Azo violet can be used to prepare an azobenzene photochromic liquid crystal compound. Photochromic liquid crystal compounds have both photochromic properties and liquid crystallinity, which has become a research hotspot in the field of information storage. Azobenzene-based liquid crystals are the most interesting photochromic liquid crystal materials in recent years due to their unique photoinduced cis-trans isomerism. Azobenzene compounds undergo reversible cis-trans isomerization under the action of light, which makes them have great potential applications in many aspects such as optical storage, photo-holography and optical information processing.
使用4-(4-Nitrophenyl)azoresorcinol is used for the detection of magnesium with which it yields a bright blue color in alkaline solution and it also used to determine molybdenum with which it forms a red-violet complex: Nikitina, Andrianova, C.A. 75, 136789v (1971).
純化方法Crystallise the dye from EtOH. [Beilstein 16 H 181, 16 IV 1266.]
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読み込み中…
74-39-5DTXSID30861621CHEMBL1604790CHEBI:66930化学的特性dark red to brown crystalline powder
定義ChEBI: 4-(4-nitrophenylazo)resorcinol is an azobenzene in which the phenyl rings are 4-nitro- and 2,4-dihydroxy-substituted respectively. It is a member of resorcinols, a C-nitro compound and a member of azobenzenes.