2-(4,5,6-trihydroxy-3-oxo-3H-xanthen-9-yl)benzenesulfonic acid
Pyrogallol sulfonphthalein
CAS: 32638-88-3;85531-30-2
Molecular Formula: C19H12O8S
2-(4,5,6-trihydroxy-3-oxo-3H-xanthen-9-yl)benzenesulfonic acid - Names and Identifiers
| Name | Pyrogallol sulfonphthalein |
| Synonyms | PYROGALLOL RED Pyrogallol sulfonphthalein Pyrogallolsulfonephthaleine 2-(4,5,6-trihydroxy-3-oxo-3H-xanthen-9-yl)benzenesulfonate 2-(4,5,6-trihydroxy-3-oxo-3H-xanthen-9-yl)benzenesulfonic acid Benzenesulfonic acid, 2-(4,5,6-trihydroxy-3-oxo-3H-xanthen-9-yl)- spiro[2,1-benzoxathiole-3,9'-xanthene]-3',4',5',6'-tetrol 1,1-dioxide Spiro(3H-2,1-benzoxathiole-3,9'-(9H)xanthene)-3',4',5',6'-tetrol, 1,1-dioxide |
| CAS | 32638-88-3 85531-30-2 |
| EINECS | 251-134-3 |
| InChI | InChI=1/C9H12N2O.C6H6O3/c1-11(2)9(12)10-8-6-4-3-5-7-8;7-4-2-1-3-5(8)6(4)9/h3-7H,1-2H3,(H,10,12);1-3,7-9H |
2-(4,5,6-trihydroxy-3-oxo-3H-xanthen-9-yl)benzenesulfonic acid - Physico-chemical Properties
| Molecular Formula | C19H12O8S |
| Molar Mass | 400.35878 |
| Melting Point | ≥300℃ |
| Storage Condition | Room Temprature |
| MDL | MFCD00005046 |
2-(4,5,6-trihydroxy-3-oxo-3H-xanthen-9-yl)benzenesulfonic acid - Reference
| Reference Show more | 1. [IF=6.475] Tao-Tao Xue et al."Evaluation of antioxidant, enzyme inhibition, nitric oxide production inhibitory activities and chemical profiles of the active extracts from the medicinal and edible plant: Althaea officinalis."Food Res Int. 2022 Jun;156:111166 2. [IF=7.46] Rui Liu et al."Visual classification for sesame oil adulteration detection and quantification of compounds used as adulterants using flavor compounds targeted array sensor in combination with DD-SIMCA and PLS."Sensor Actuat B-Chem. 2022 Apr;357:131335 |
2-(4,5,6-trihydroxy-3-oxo-3H-xanthen-9-yl)benzenesulfonic acid - Introduction
Pyrogallol sulfonphthalein(Pyrogallol sulfonphthalein), also known as phenolphthalein red or brown phthalide, is an organic compound. The following is a description of the nature, use, formulation and safety information of Pyrogallol sulfonphthalein:
Nature:
- Pyrogallol sulfonphthalein is a red crystal or powder, soluble in alcohol and ether, and slightly soluble in water.
-It is an acid-base indicator, which can appear red in acidic and neutral media according to the pH value, and turn yellow in alkaline media.
-When it appears red in solution, its absorption peak is located at nearly 580 nanometers.
Use:
- Pyrogallol sulfonphthalein can be used as an acid-base indicator and is commonly used in acid-base titration.
-It can also be used as an indicator in Ceric acid titration.
-In addition, Pyrogallol sulfonphthalein is also widely used in the field of chemistry, such as the determination of protein in serum and urine.
Method:
-Usually, Pyrogallol sulfonphthalein is synthesized by reacting 2,4, 6-trinitrophenol with sulfuric acid.
-The preparation process involves multiple steps, including nitration, O-nitrification, sulfation, etc.
Safety Information:
- Pyrogallol sulfonphthalein has certain toxicity and should be used with caution.
-May trigger irritation and allergic reactions when in contact with the skin, eyes or respiratory system.
-Avoid inhaling its dust or solution during operation to avoid discomfort.
-Wear appropriate personal protective equipment such as lab gloves, goggles and external laboratory ventilation equipment during use.
-Follow safety procedures to ensure the safe use of this compound.
Nature:
- Pyrogallol sulfonphthalein is a red crystal or powder, soluble in alcohol and ether, and slightly soluble in water.
-It is an acid-base indicator, which can appear red in acidic and neutral media according to the pH value, and turn yellow in alkaline media.
-When it appears red in solution, its absorption peak is located at nearly 580 nanometers.
Use:
- Pyrogallol sulfonphthalein can be used as an acid-base indicator and is commonly used in acid-base titration.
-It can also be used as an indicator in Ceric acid titration.
-In addition, Pyrogallol sulfonphthalein is also widely used in the field of chemistry, such as the determination of protein in serum and urine.
Method:
-Usually, Pyrogallol sulfonphthalein is synthesized by reacting 2,4, 6-trinitrophenol with sulfuric acid.
-The preparation process involves multiple steps, including nitration, O-nitrification, sulfation, etc.
Safety Information:
- Pyrogallol sulfonphthalein has certain toxicity and should be used with caution.
-May trigger irritation and allergic reactions when in contact with the skin, eyes or respiratory system.
-Avoid inhaling its dust or solution during operation to avoid discomfort.
-Wear appropriate personal protective equipment such as lab gloves, goggles and external laboratory ventilation equipment during use.
-Follow safety procedures to ensure the safe use of this compound.
Last Update：2024-04-09 20:52:54
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