1,4-DIMETHYL-5-HYDROXYBENZENESULFONPHTHALEIN
Xylenol Blue
CAS: 125-31-5
Molecular Formula: C23H22O5S
1,4-DIMETHYL-5-HYDROXYBENZENESULFONPHTHALEIN - Names and Identifiers
| Name | Xylenol Blue |
| Synonyms | Xylenol Blue P-XYLENOL BLUE XYLENOL BLUE FREE ACID P-XYLENOL BLUE INDICATOR p-Xylenolsulphonephthalein XYLENOL BLUE, INDICATOR GRADE 1,4-DIMETHYL-5-HYDROXYBENZENESULFONPHTHALEIN 4,4-(3H-2,1-benzoxathiol-3-ylidene)bis(2,5-dimethylphenol) S,S-dioxide 4,4'-(1,1-dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(2,5-dimethylphenol) phenol,4,4'-(3h-2,1-benzoxathiol-3-ylidene)bis[2,5-dimethyl-,s,s-dioxide 2-[(Z)-(2,5-dimethyl-4-oxocyclohexa-2,5-dien-1-ylidene)(4-hydroxy-2,5-dimethylphenyl)methyl]benzenesulfonic acid |
| CAS | 125-31-5 |
| EINECS | 204-736-5 |
| InChI | InChI=1/C23H22O5S/c1-13-11-20(24)15(3)9-18(13)23(19-10-16(4)21(25)12-14(19)2)17-7-5-6-8-22(17)29(26,27)28/h5-12,24H,1-4H3,(H,26,27,28)/b23-19+ |
| InChIKey | MGUKYHHAGPFJMC-UHFFFAOYSA-N |
1,4-DIMETHYL-5-HYDROXYBENZENESULFONPHTHALEIN - Physico-chemical Properties
| Molecular Formula | C23H22O5S |
| Molar Mass | 410.48 |
| Density | 1.346±0.06 g/cm3(Predicted) |
| Melting Point | 212°C (dec.) |
| Boling Point | 577.2±50.0 °C(Predicted) |
| Solubility | Solubility Slightly soluble in water, soluble in ethanol |
| Appearance | Brown powder |
| Color | Dark brown |
| Odor | Odorless |
| Maximum wavelength(λmax) | 424nm |
| Merck | 14,10083 |
| BRN | 363132 |
| pKa | 9.52(at 25℃) |
| Storage Condition | Room Temprature |
| Refractive Index | 1.627 |
| MDL | MFCD00005870 |
| Use | Used as an acid-base indicator. |
1,4-DIMETHYL-5-HYDROXYBENZENESULFONPHTHALEIN - 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. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S36 - Wear suitable protective clothing. |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 29147000 |
1,4-DIMETHYL-5-HYDROXYBENZENESULFONPHTHALEIN - Introduction
Brown crystals (recrystallized from ethanol). It is a sulfonylphthalide pigment. In the presence of zinc chloride, o-sulfo dichlorobenzoic acid and p-xylenol are heated to produce. There are two color change ranges: pH value 1.2~2.8 red ~ yellow; The pH value is 8.0~9.6 yellow and blue.
Last Update：2022-10-16 17:12:58
1,4-DIMETHYL-5-HYDROXYBENZENESULFONPHTHALEIN - Reference Information
| use | as an acid-base indicator. acid-base indicator, pH color change range 1.2 (red)-2.8 (yellow),8.0 (yellow)-9.6 (blue). |
| production method | production method brief description: in the presence of zinc chloride, o-sulfodichlorobenzoic acid and p-xylenol are heated to produce |
| EPA chemical information | information provided by: ofmpub.epa.gov (external link) |
Last Update：2024-04-09 15:16:37
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Multiple Specifications
Product Name: Xylenol Blue Visit Supplier Webpage Request for quotationCAS: 125-31-5
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Multiple Specifications
Product Name: Xylenol Blue Visit Supplier Webpage Request for quotationCAS: 125-31-5
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
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