AZOLITMIN
- CAS No.
- 1395-18-2
- Chemical Name:
- AZOLITMIN
- Synonyms
- AZOLITMIN
- CBNumber:
- CB9301027
- Molecular Formula:
- C10H11N3O
- Molecular Weight:
- 189.21
- MOL File:
- 1395-18-2.mol
AZOLITMIN Chemical Properties,Uses,Production
Uses
Azolitmin is an indicator instead of litmus. pH: 4.5 red, 8.3 blue. Usable with most mineral, some organic acids (not hydroxy acids) and some alkaloids; also used for preparing litmus media for bacteriologic purposes.
Definition
A purplish-red colorant.
Purification Methods
It crystallises from water as dark violet scales, or as a red powder on precipitation from H2O by addtition of EtOH. It is an indicator which is red at pH 4.5 and blue at pH 8.3. [cf Kolthopff & Rosenblum Acid-Base Indicators, Macmillan, NY pp160-162, 365-366 1937.] p,p'-Azoxyanisole (4,4'-dimethoxyazoxybenzene) [1562-94 -3] M 258.3, transition temperatures: 118.1-118.8o, 135.6-136.0o, pK25 -5.23 (20% aqueous EtOH + 80% aqueous H2S O4). Crystallise the dye from absolute or 95% EtOH, or acetone, and dry it by heating under vacuum or sublime it in a vacuum onto a cold finger. [Beilstein 16 II 326.]
AZOLITMIN Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +8618949823763 | China | 34571 | 58 | Inquiry |
| Jilin Chinese Academy of Sciences-yanshen Technology | +undefined18143011203 | China | 42057 | 58 | Inquiry |
| Aladdin Scientific | +1-+1(833)-552-7181 | United States | 57511 | 58 | Inquiry |
| Shanghai Aladdin Biochemical Technology Co.,Ltd. | +86-18521732826 | China | 48465 | 58 | Inquiry |
| Jilin Chinese Academy of Sciences-yanshen Technology | 18143011203 | China | 19183 | 58 | Inquiry |
| Eastern Chemical Corp. | 631 273-0900 | United States | 2787 | 34 | Inquiry |
| Jilin Chinese Academy of Sciences - Yanshen Technology Co., Ltd | 0431-80514535 19917294565 | China | 5061 | 58 | Inquiry |
| Hubei Chenghai Chemical Co., Ltd | 18327245847 18327245847 | China | 9960 | 58 | Inquiry |
| Hubei Wande Chemical Co., Ltd | 027-59210159 15377098680 | China | 9968 | 58 | Inquiry |
| Hubei Qifei Pharmaceutical Chemical Co., Ltd | 027-027-59322506 18071128681 | China | 9978 | 58 | Inquiry |
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