33869-21-5
lacmoid
CAS: 33869-21-5
Molecular Formula: C24H16N2O6
33869-21-5 - Names and Identifiers
| Name | lacmoid |
| Synonyms | lacmoid LACMOID CI 51400 CI NO 51400 IRIS BLUE B RESORCIN BLUE RESORCINOL BLUE FLUORESCENT BLUE Fluorescent Blue ACID FLUORESCENT BLUE Fluorescent Sapphine Blue |
| CAS | 33869-21-5 |
| InChI | InChI=1/C24H16N2O6.C24H15NO7/c25-17-9-23-18(7-15(17)13-3-1-11(27)5-20(13)29)26-19-8-16(22(31)10-24(19)32-23)14-4-2-12(28)6-21(14)30;26-11-1-3-13(19(28)5-11)15-7-17-23(9-21(15)30)32-24-10-22(31)16(8-18(24)25-17)14-4-2-12(27)6-20(14)29/h1-10,26-27,29-30H,25H2;1-10,25-26,28-30H/b2*16-14- |
33869-21-5 - Physico-chemical Properties
| Molecular Formula | C24H16N2O6 |
| Molar Mass | 428.39 |
| Density | 1.58±0.1 g/cm3(Predicted) |
| Melting Point | >250°C |
| Boling Point | 785.7±60.0 °C(Predicted) |
| Water Solubility | Slightly soluble in water |
| Solubility | Solubility Sparingly soluble in water, ether; soluble in water, ethanol, methanol, amyl alcohol, Hacetone, acetic acid; practically insoluble in chloroform, benzene, petroleum ether |
| Appearance | Crystalline powder |
| Color | Black-violet |
| Maximum wavelength(λmax) | 611nm |
| pKa | 5.31(at 25℃) |
| Storage Condition | Room Temprature |
| MDL | MFCD00152579 |
33869-21-5 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| WGK Germany | 3 |
33869-21-5 - Introduction
lacmoid, also known as lacmoid, is a chemical indicator commonly used in acid-base titrations and to test the pH of a solution. The following is a description of the nature, use, preparation and safety information of the lacmoid:
Nature:
lacmoid is a yellow, orange or red substance in powder state with strong fluorescence effect. It is a weakly acidic compound, slightly soluble in water, but soluble in benzene, alcohol and organic solvents.
Use:
1. Acid-base titration indicator: lacmoid can appear yellow under acidic conditions and red under alkaline conditions. Therefore, it is often used as an indicator for acid-base titration to determine the pH of the solution.
2. p H indicator: lacmoid can also be used as pH indicator. The lacmoid appears yellow in the pH range of 4.4 to 5.8. When the pH of the solution is lower than 4.4 or higher than 5.8, the color of the lacmoid will change.
Preparation Method:
lacmoid can be prepared by a variety of methods. One of the common methods is the reaction of m-phenylenediamine with nitroaniline under alkaline conditions to produce the lacmoid dye.
Safety Information:
The use of lacmoid is relatively safe, but still need to pay attention to the following points:
1. Avoid inhalation of dust or contact with skin when in contact. Wear lab gloves and protective glasses.
2. if accidentally inhaled or ingested, please seek medical attention.
3. Do not pour lacmoid into the sewer or a large amount into the waste container, it should be disposed of in accordance with local regulations.
It is important to note that lacmoid are only used for laboratory and scientific research, not food or medicine.
Nature:
lacmoid is a yellow, orange or red substance in powder state with strong fluorescence effect. It is a weakly acidic compound, slightly soluble in water, but soluble in benzene, alcohol and organic solvents.
Use:
1. Acid-base titration indicator: lacmoid can appear yellow under acidic conditions and red under alkaline conditions. Therefore, it is often used as an indicator for acid-base titration to determine the pH of the solution.
2. p H indicator: lacmoid can also be used as pH indicator. The lacmoid appears yellow in the pH range of 4.4 to 5.8. When the pH of the solution is lower than 4.4 or higher than 5.8, the color of the lacmoid will change.
Preparation Method:
lacmoid can be prepared by a variety of methods. One of the common methods is the reaction of m-phenylenediamine with nitroaniline under alkaline conditions to produce the lacmoid dye.
Safety Information:
The use of lacmoid is relatively safe, but still need to pay attention to the following points:
1. Avoid inhalation of dust or contact with skin when in contact. Wear lab gloves and protective glasses.
2. if accidentally inhaled or ingested, please seek medical attention.
3. Do not pour lacmoid into the sewer or a large amount into the waste container, it should be disposed of in accordance with local regulations.
It is important to note that lacmoid are only used for laboratory and scientific research, not food or medicine.
Last Update：2024-04-09 20:48:19
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CAS: 33869-21-5
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CAS: 33869-21-5
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Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
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