compound introduction
用作酸碱指示剂，PH值6.7左右时为无色～桔黄色，PH值7.9左右时由橘黄变为蓝色。市售品中含杂质者多呈淡红色，于PH值7.3～8.7时由淡红色变为蓝绿色。
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α-naphthol phthalide indicator
Dangerous GoodsCAS number：596-01-0(Ethanol) molecular formula：C28H18O4
overview
Specs
| Chinese alias | 1-萘酚酞 | 甲萘酚酞 | ||
| English alias | - | ||
| CAS number | 596-01-0(Ethanol) | molecular formula | C28H18O4 |
| molecular weight | 418.44 g/mol | Exact mass | 0.1% in 50% Ethanol |
| PSA | - | logp | - |
numbering system
No numbering system information yet
physicochemical properties
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Safety information
pictogram：
GHS07 , GHS02
Signal word：
Danger
Hazard Statement：
H319: 引起严重眼睛刺激 H225: 高度易燃的液体和蒸气
Statement of Preventive Measures：
P305+P351+P338: 如进入眼睛：用水小心冲洗几分钟。如戴隐形眼镜并可方便地取出，取出隐形眼镜。继续冲洗。 P280: 戴防护手套/穿防护服/戴防护眼罩/戴防护面具。 P210: 远离热源，热表面，火花，明火和其他点火源。 - 禁止抽烟。 P303+P361+P353: 如皮肤（或头发）沾染：立即脱掉所有沾染的衣服。用水清洗皮肤/淋浴。 P337+P313: 如仍觉眼刺激：求医/就诊。
Production methods and uses
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MSDS
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