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Merck
CN

1.08380

2,3,5-氯化三苯基四唑

Color indicator. Supplement in culture media for the microbiological analysis of food and water samples

别名:

2,3,5-氯化三苯基四氮唑, TTC, TT, TPTZ, TTZ, 四氮唑红

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关于此项目

经验公式(希尔记法):
C19H15ClN4
化学文摘社编号:
分子量:
334.80
NACRES:
NA.74
UNSPSC Code:
41106212
Beilstein/REAXYS Number:
3923356
MDL number:
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Quality Level

assay

≥98% (calculated on dried substance, perchloric acid titration)

form

solid

pH

3.7 (20 °C, 10 g/L in H2O)

mp

243 °C (decomposition)

solubility

150 g/L

bulk density

230 kg/m3

application(s)

microbiology

storage temp.

2-30°C

SMILES string

[Cl-].c1ccc(cc1)-c2nn(-c3ccccc3)[n+](n2)-c4ccccc4

InChI

1S/C19H15N4.ClH/c1-4-10-16(11-5-1)19-20-22(17-12-6-2-7-13-17)23(21-19)18-14-8-3-9-15-18;/h1-15H;1H/q+1;/p-1

InChI key

PKDBCJSWQUOKDO-UHFFFAOYSA-M

General description

2,3,5-三苯基四唑氯化物(TTC)是一种染料,主要用于计数固体培养培养基中的微生物菌落,是用于食品微生物分析的干燥可复水膜系统的关键组分。这种染料在氧化形式下是无色的,当被微生物还原时,由于形成了甲臜,因此是红色的。活的微生物通过酶促作用减少TTC,形成红色的甲臜,保留在细胞的颗粒内部。

Application

2,3,5-三苯基四唑氯化物(TTC)是推荐用于食品微生物分析的指示剂。

Analysis Note

含量测定(高氯酸滴定,以干燥物质计算): ≥ 98 %
鉴别(UV/VIS光谱):通过测试
最大吸光度 λmax.(水):245 - 248 nm
比吸光系数 A 1%/1cm(λ最大值;0,01 g/l;水;以干燥物质计算): ≥ 770
TLC-测试:通过测试
干燥失重(70 °C;≤ 1 hPa): ≤ 0.5 %
测试种子发芽能力的适用性:通过测试
微生物学的适用性:通过测试


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pictograms

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Danger

Hazard Classifications

Eye Irrit. 2 - Flam. Sol. 1 - Skin Irrit. 2

存储类别

4.1B - Flammable solid hazardous materials

wgk

WGK 3



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全球贸易项目编号

货号GTIN
108380001004022536103730
108380010004022536103747