一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

?? ?? ?? 0.02%

?? ?? ?? 0.02%
?? ?? ?? 0.02% ??? ???
?? ??:
34487-61-1
???:
?? ?? ?? 0.02%
???(??):
??????0.02%;??????0.02%(PHENOLREDSOLUTION0.02%)
???:
Phenol Red sodium salt
???(??):
PHENOLSULFONPHTHALEIN;PHENOL RED INDICATOR;ANTHRACENE NEAT;abcolphenolredws;SODIUM PHENOL RED;ACENAPHTHENE NEAT;PHENOL RED SODIUM;Red sodium phenol;PHENOL RED NA-SALT;Phenolsulphonephth
CBNumber:
CB0426392
???:
C19H15NaO5S
??? ??:
378.37
MOL ??:
34487-61-1.mol

?? ?? ?? 0.02% ??

???
285 °C (dec.)(lit.)
?? ?
285 °C
??
0.972
?? ??
room temp
???
H2O: ??? ??? ??
?? ?? (pKa)
7.69, 7.9, 1.3(at 25℃)
??? ??
??? ??
??
???
??
?? ??
pH ??
Yellow (6.8) to red (8.4)
???
??
?? ??(λmax)
423nm, 557nm
ε (????)
≥19000 at 422-426nm in methanol
≥900 at 256-269nm in methanol
Merck
14,7247
BRN
6260026
???
????. ?? ???? ???? ????.
?? ??
??, ?? ??, ???, ?? ??, ??, ?? ?? ??, ??? ??, ???, ???, ???
InChI
1S/C19H14O5S.Na/c20-15-9-5-13(6-10-15)19(14-7-11-16(21)12-8-14)17-3-1-2-4-18(17)25(22,23)24-19;/h1-12,20-21H;/q;+1/p-1
InChIKey
HKHYOKBQJILTEI-UHFFFAOYSA-M
SMILES
[Na+].Oc1ccc(cc1)C2(OS(=O)(=O)c3ccccc23)c4ccc([O-])cc4
CAS ??????
34487-61-1(CAS DataBase Reference)
EPA
Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis-, monosodium salt (34487-61-1)
??
  • ?? ? ?? ??
  • ?? ? ???? ?? (GHS)
??? ?? Xi,C
?? ???? ?? 36/37/38-34
????? 26-36-37/39-45-36/37/39-27
WGK ?? 3
TSCA TSCA listed
HS ?? 29349990
???? ??? 11 - Combustible Solids
Hazard Classifications Skin Irrit. 2
STOT SE 3
???? ?? KE-02749
????(GHS): Exclamation Mark (GHS07)
?? ?: Warning
??·?? ??:
?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
H315 ??? ??? ??? ????? ?? ????? ?? 2 ?? P264, P280, P302+P352, P321,P332+P313, P362
H335 ?? ???? ??? ? ?? ?? ???? ?? - 1? ??;???? ?? ?? 3 ??
??????:
P261 ??·?·??·???·??·...·????? ??? ????.
P264 ?? ??? ?? ??? ????.
P264 ?? ??? ?? ??? ????.
P271 ?? ?? ??? ? ?? ???? ?????.
P280 ????/???/???/?????? ?????.
P302+P352 ??? ??? ??? ?? ????.
NFPA 704
1
2 0

?? ?? ?? 0.02% MSDS


Phenolsulfonephthalein sodium salt

?? ?? ?? 0.02% C??? ??, ??, ??

??? ??

red liquid or red/brown crystals, slightly soluble in water, alcohol and acetone. Almost insoluble in ether and chloroform, soluble in hydroxide base or carbonate base solution with deep red color, stable in air, used as acid-base indicator.

??

Phenol Red Sodium Salt is a water soluble pH indicator commonly employed in cell biology laboratories as a cell tissue culture pH marker. Phenol Red sodium salt is a water soluble pH indicator used in the 6.8 (yellow) to 8.2 (red) range. It is commonly employed in cell biology laboratories as a cell tissue culture pH marker. Under normal conditions, phenol red added to the growth medium will have a pink-red color. Usually 15 mg/l is used to produce this effect. If problems arise, such as dying cells or overgrowth of contaminants, this will cause a change in pH resulting in a change in indicator color. This color change is an indication that the medium needs to be replaced. Additionally, Phenol Red could potentially be useful as a differentiation factor. It can also be used as reactant/reag

?? ??

Phenol Red sodium salt is widely used as a pH indicator. At a pH of 6.4 and below, phenol red solution will have a yellow color. At a pH of 8.2 and above, it will have a red color. It is commonly used in culture media to detect neutral to acidic pH changes.

?? ?? ?? 0.02% ?? ?? ? ???

???

?? ??


?? ?? ?? 0.02% ?? ??

???( 373)?? ??
??? ?? ??? ?? ?? ? ??
Jiangsu Boquan Biotechnology Co., Ltd.
+86-18168774353
boquanshengwu003@boquansw.com China 248 58
Hebei Chuanghai Biotechnology Co,.LTD
+86-86-13131129325
sales1@chuanghaibio.com China 5218 58
Anhui Ruihan Technology Co., Ltd
+undefined17756083858
daisy@anhuiruihan.com China 954 58
Hebei Zhuanglai Chemical Trading Co.,Ltd
13343047651
admin@zlchemi.com China 3689 58
career henan chemical co
+86-0371-86658258
sales@coreychem.com China 29766 58
Shenyang Simchoice Chemical Co.,Ltd
+86-024-23769576 +86-15040101888
sales@simchoicechem.com China 252 58
CONIER CHEM AND PHARMA LIMITED

sales@conier.com China 49906 58
career henan chemical co
+86-0371-86658258
factory@coreychem.com China 29780 58
Richest Group Ltd
18017061086
oled@richest-group.com CHINA 5597 58
TargetMol Chemicals Inc.
+1-781-999-5354; +1-00000000000
marketing@targetmol.com United States 32431 58

?? ?? ?? 0.02% ?? ??:

Copyright 2019 ? ChemicalBook. All rights reserved
且末县| 甘肃省| 胶南市| 库伦旗| 宾阳县| 宾阳县| 巴马| 喀什市| 喀什市| 凯里市| 年辖:市辖区| 江油市| 杭锦旗| 聊城市| 宜川县| 和顺县| 金沙县| 乌拉特后旗| 广灵县| 承德县| 抚顺县| 金乡县| 驻马店市| 新晃| 北票市| 普兰店市| 宁德市| 上饶县| 永丰县| 湾仔区| 汉中市| 凌云县| 房山区| 互助| 铜梁县| 大渡口区| 拉萨市| 轮台县| 莆田市| 康定县| 临海市|