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PROPYL RED |
| Synonyms. Propyl red; 2-(2-(4-(Dipropylamino)phenyl)diazenyl)benzoic acid; 2-(4-Dipropylaminophenylazo)benzoic acid; 4-(Dipropylamino)azobenzene-2'-carboxylic acid; |
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| PRODUCT IDENTIFICATION | |
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CAS RN |
2641-01-2 |
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EINECS RN |
220-140-8 |
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FORMULA |
(C3H7)2NC6H4N=NC6H4COOH |
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MOLE WEIGHT |
325.40 |
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H.S CODE |
2927.00.5000 |
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SMILES |
O=C(O)c1c(\N=N\c2ccc(N(CCC)CCC)cc2)cccc1 |
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CLASSIFICATION |
pH indicator |
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EXTRA NOTES |
Transition pH range: 4.6 ~ 6.6 |
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| PHYSICAL AND CHEMICAL PROPERTIES | |
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PHYSICAL STATE. |
dark red crystalline powder |
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MELTING POINT |
173 ~ 175 C |
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BOILING POINT |
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DENSITY |
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SOLUBILITY IN WATER |
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| SOLVENT SOLUBILITY |
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VAPOR DENSITY |
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log P(octanol-water) |
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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 - Propyl red Wikipedia Linking - pH indicator Google Scholar Search - Propyl red PubChem Compound Summary - Propyl red http://www.ncbi.nlm.nih.gov/ - Propyl red Material Safety Data Sheet - Propyl red EPA - Substance Registry Services - Propyl red |
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| SALES SPECIFICATION | |
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APPEARANCE |
dark red crystalline powder |
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MELTING POINT |
173 ~ 175 C |
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TRANSITION |
Visual Interval: pH 4.6 (red) to pH 6.6 (yellow) |
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| TRANSPORT & REGULATORY INFORMATION | |
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UN NO. |
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| SAFETY INFORMATION | |
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HAZARD OVERVIEW |
Not a dangerous substance or mixture according to GHS (Globally Harmonised System). Eyes: May cause eye irritation. Skin: May be harmful if absorbed through skin. May cause skin irritation. Inhalation: May be harmful if inhaled. May cause respiratory tract irritation. Ingestion: May be harmful if swallowed. |
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RISK PHRASES |
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SAFETY PHRASES |
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| PACKING |
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Preserve in light-resistant and well-closed containers |
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