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XYLENOL BLUE |
| Synonyms. Xylenol Blue; 4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis(2,5-dimethylphenol) S,S-dioxide; 1,4-Dimethyl-5-hydroxybenzenesulfonphthalein; p-Xylenesulfonephthalein; p-Xylenol Blue; p-Xylenolsulfonephthalein; p-Xylenolsulfonphthalein; p-Xylenolsulfophthalein; |
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| PRODUCT IDENTIFICATION | |
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CAS RN |
125-31-5 |
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EINECS RN |
204-736-5 |
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FORMULA |
C23H22O5S |
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MOLE WEIGHT |
410.48 |
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H.S CODE |
2914.70.4000 |
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SMILES |
O=S1(=O)OC(c2ccccc12)(c1c(cc(O)c(C)c1)C)c1c(cc(O)c(C)c1)C |
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CLASSIFICATION |
Stain, Dye, pH Indicator |
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EXTRA NOTES |
pH Transition interval: 1.2 - 2.8, red to yellow (acid), 8.0 - 9.8, yellow to violet (alkaline) |
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| PHYSICAL AND CHEMICAL PROPERTIES | |
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PHYSICAL STATE. |
dark blue powder |
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MELTING POINT |
212 C (Decomposes) |
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BOILING POINT |
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DENSITY |
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SOLUBILITY IN WATER |
Very slightly soluble |
| SOLVENT SOLUBILITY |
Slightly soluble in: Ethanol. Soluble in: Di luted hydroxide solution. |
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VAPOR DENSITY |
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log P(octanol-water) |
5.40 |
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VAPOR PRESSURE |
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AUTOIGNITION TEMP |
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| pK |
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REFRACTIVE INDEX |
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FLASH POINT |
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| STABILITY AND REACTIVITY | |
| STABILITY | Stable under normal conditions. |
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INCOMPATIBLE MATERIALS |
Strong oxidizing agents |
| POLYMERIZATION |
Has not been reported |
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NFPA RATINGS |
Health: 1, Flammability: 0, Reactivity: 0 |
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| EXTERNAL LINKS & GENERAL DESCRIPTION |
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USA.gov - Xylenol Blue Wikipedia Linking - Xylenol Blue Google Scholar Search - Xylenol Blue Drug Information Portal (U.S. National Library of Medicine) - Xylenol Blue PubChem Compound Summary - Xylenol Blue http://www.ncbi.nlm.nih.gov/ - Xylenol Blue EPA - Substance Registry Services - Xylenol Blue |
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| SALES SPECIFICATION | |
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APPEARANCE |
dark blue powder |
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CONTENT |
90% min |
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ABSORPTION |
424 nm (λ max) |
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LOSS ON DRYING |
10% max |
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| TRANSPORT & REGULATORY INFORMATION | |
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UN NO. |
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| HAZARD CLASS |
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| PACKING GROUP | |
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| SAFETY INFORMATION | |
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HAZARD OVERVIEW |
Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. |
| SIGNAL WORD | Warning |
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PICTOGRAMS |
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HAZARD STATEMENTS |
H315-H319-H335 |
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P STATEMENTS |
P261-P305 + P351 + P338 |
| EC DIRECTIVES |
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| HAZARD CODES |
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RISK PHRASES |
36/37/38 |
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SAFETY PHRASES |
26-36 |
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| PACKING |
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Preserve in light-resistant and well-closed containers |
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| PRICE INFORMATION |
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