精品欧美自拍日本_九一制造糖心vlog传媒_1024手机基在线播放国产_日韩人妻少妇性无码系列…_国产三级黄色免费_人人操美熟女AV_亚洲熟妇猛烈进入精品视频_全肉野战高h含苞时夏时霖

2,7–Dihydroxynaphthalene CAS 582-17-2

2,7–Dihydroxynaphthalene

CAS Number:582-17-2

Type:Gray-white powder

Introduction Parameters

The above chemical was tested and the following results have been obtained:

Item Unit ?Standard Results
Appearance   Gray-white powder Up to standard
Purity?(HPLC) % ≥ 98.0 99.49
Content % ≥ 97.0 99.45
Melting point ℃ 185 – 200 190.5-192.7
2-Naphthol % ≤ 0.2 0.047
Ash % ≤ 0.6 0.03
Water % ≤ 1 0.03
5% Mehtanol solution   Transparent Up to standard

2,7–Dihydroxynaphthalene

CAS Number:582-17-2

Type:Gray-white powder

Online Inquiry

4 × 5 =

Related Products

Copyright ? 1983-2025 All Rights Reserved | 瓊ICP備2020005086號| 瓊公網安備 46010502000400號