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共找到 8 條與 偶氮胂Ⅲ〔2,7-雙(2-苯砷酸-1-偶氮)-1,8-二羥基萘-3,6-二磺酸〕 相關(guān)的標(biāo)準(zhǔn),共 1

Chemical Reagent Arsenazo III [2,7-bis(2-phenylarsenic acid-1-azo)-1,8-dihydroxynaphthalene-3,6-disulfonic acid]

本標(biāo)準(zhǔn)規(guī)定了化學(xué)試劑偶氮胂Ⅲ的要求、試驗(yàn)方法、檢驗(yàn)規(guī)則、包裝及標(biāo)志

Chemical reagent.Arsenazo Ⅲ

Xylylazo violet I (sodium 2-(2-hydroxy-3-(2,4-xylylcarbamoyl)-1-naphthylazo)-1-phenol-4-sulfonate)

この規(guī)格は,試薬として用いる2-ヒドロキシート(2-ヒドロキシ-4-スルホ-1-ナフチルアゾト3-ナフトエ酸()(以下,HSNNという。)について規(guī)定する。注()略名:HSNN

2-Hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-3-naphthoic acid

SODIUM CHLORIDE. DETERMINATION OF FLUORIDE CONTENT. PHOTOMETRIC METHOD WITH SODIUM 2-(SULFOPHENYLAZO)-1,8 DIHYDROXYNAPHTHALENE-3,6 DISULFONATE (SPADNS).

Xylylazo violet II (2-(2-hydroxy-3-(2,4-xylylcarbamoyl)-1-naphthylazo)-phenol)

2-(對(duì)磺苯偶氮)-1,8-二羥基-3,6-萘二磺酸鈉(SPADNS)與鋯離子形成紅色鋯染料。在酸性溶液中,氟離子與紅色鋯染料反應(yīng),定量置換出染料中的鋯,使染料褪色,褪色的程度與氟離子濃度在一定范圍內(nèi)成線性關(guān)系。在分光光度計(jì)上,于600 nm波長(zhǎng)處測(cè)量吸光度。計(jì)算氟化物(以F-計(jì))質(zhì)量濃度

Water for drinking determination of fluoride 2-(parasulfophenylazo)-1,8-dihydroxy-3,6-naphthalene disulfonic acid, zirconium salt spectrophotometric method

(a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified generically as 2,7-Naphthalenedisulfonic

Protection of Environment. Part721:Significant new uses of chemical substances. Section721.5262:2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[substituted] amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(1-sulfo-2-naphthalenyl)azo]-, trisodium salt (gener




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