Introduction：Basic information about LITMUS CAS 1393-92-6, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
LITMUS Basic information
| Product Name: | LITMUS |
| Synonyms: | LITMUS;LITMUS POWDER;LITMUS SOLUTION;LITMUS SOLUTION ACCORDING TO KUBEL AND TIEMANN;LITMUS SOLUTION BLUE;LITMUS SOLUTION RED;LACMUS;CI 1242 |
| CAS: | 1393-92-6 |
| MF: | n.a. |
| MW: | 0 |
| EINECS: | 215-739-6 |
| Product Categories: | Titration;J-K-LTitration;pH Indicators - Solids;Indicators;Stains and Dyes;Stains&Dyes, A to |
| Mol File: | Mol File |
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LITMUS Chemical Properties
| Melting point | 100 °C |
| storage temp. | Storage temp. 2-8°C |
| form | Powder or Granules |
| color | Dark blue to bluish-black |
| Specific Gravity | 0.984 |
| Odor | Odorless |
| PH Range | 4.5(red)-8.3(blue) |
| Water Solubility | Soluble in water |
| Merck | 14,5547 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
Safety Information
| Hazard Codes | Xn,Xi |
| Risk Statements | 40-36/37/38 |
| Safety Statements | 24/25-36/37-36-26 |
| WGK Germany | 3 |
| HS Code | 32030010 |
LITMUS Usage And Synthesis
| Chemical Properties | blue powder |
| Uses | Litmus is a pH indicator, which is red at pH 4.5 and blue at pH 8.3. |
| Definition | A natural pigment thatchanges color when in contact with acidsand alkalis; above a pH of 8.3 it is blue andbelow a pH of 4.5 it is red. Thus it gives arough indication of the acidity or basicityof a solution; because of its rather broadrange of color change it is not used for precisework. Litmus is used both in solutionand as litmus paper. |
| Definition | litmus: A water-soluble dye extractedfrom certain lichens. It turnsred under acid conditions and blueunder alkaline conditions, the colourchange occurring over the pH range4.5-8.3 (at 25°C). It is not suitable fortitrations because of the wide rangeover which the colour changes, but is used as a rough indicator of acidityor alkalinity, both in solution and aslitmus paper (absorbent paper soakedin litmus solution). |
| References | [1] Manochehry S, et al Colorimetric Detection of Uranyl Using a Litmus Test. Front Chem. 2018 Aug 9;6:332. DOI:10.3389/fchem.2018.00332 |
LITMUS Preparation Products And Raw materials
| Preparation Products | Nonanoic acid-->4-Nitrophthalic acid-->Ethyl ethoxyacetate |
