MERCK 107241.0005 Phenol Red İndicator pH 6.4-8.2 ACS CAS No.143-74-8
| Description |
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| Catalogue Number | 107241 |
| Description | Phenol red |
| Product Information |
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| CAS number | 143-74-8 |
| EC number | 205-609-7 |
| Grade | ACS |
| Hill Formula | C₁₉H₁₄O₅S |
| Chemical formula | (C₆H₄OH)₂C₇H₄SO₃ |
| Molar Mass | 354.38 g/mol |
| HS Code | 2934 99 99 |
| Structure formula Image |
| Quality Level | MQ200 |
| Physicochemical Information |
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| Melting Point | >300 °C |
| Bulk density | 200 - 300 kg/m3 |
| Solubility | 0.77 g/l |
| Safety Information according to GHS |
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| Hazard Pictogram(s) | |
| Hazard Statement(s) | H315: Causes skin irritation.H335: May cause respiratory irritation. |
| Precautionary Statement(s) | P261: Avoid breathing dust/ fume/ gas/ mist/ vapours/ spray.P264: Wash skin thoroughly after handling.P271: Use only outdoors or in a well-ventilated area.P280: Wear protective gloves.P302 + P352: IF ON SKIN: Wash with plenty of water.P304 + P340 + P312: IF INHALED: Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTER/doctor if you feel unwell. |
| Signal Word | Warning |
| RTECS | SJ7490000 |
| Storage class | 10 - 13 Other liquids and solids |
| WGK | WGK 3 highly hazardous to water |
| Disposal | 3Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C. |
| Storage and Shipping Information |
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| Storage | Store at +5°C to +30°C. |
| Specifications |
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| Identity (UV/VIS-Spectrum) | passes test |
| Clarity of solution (1 g/l; ethanol) | passes test |
| 1st transition range | pH 1.2 - pH 3.0 brownish orange - yellow |
| 2nd transition range | pH 6.5 - pH 8.0 brownish yellow - red violet |
| Absorption maximum λ 1 max. (buffer pH 1,2) | 503 - 506 nm |
| Absorption maximum λ 2 max. (buffer pH 3,0) | 430 - 435 nm |
| Absorption maximum λ 3 max. (buffer pH 6.5) | 430 - 435 nm |
| Absorption maximum λ 4 max. (buffer pH 8,0) | 557 - 560 nm |
| Spec. Absorptivity A 1%/1cm (λ 1 max.; 0.005 g/l; buffer pH 1,2; calc. on dried substances) | 900 - 1150 |
| Spec. Absorptivity A 1%/1cm (λ 2 max.; 0.005 g/l; buffer pH 3,0; calc. on dried substances) | 550 - 650 |
| Spec. Absorptivity A 1%/1cm (λ 3 max.; 0.005 g/l; buffer pH 6.5; calc. on dried substances) | 550 - 650 |
| Spec. Absorptivity A 1%/1cm (λ 4 max.; 0.005 g/l; buffer pH 8,0; calc. on dried substances) | 1000 - 1250 |
| Loss on drying (110 °C) | ≤ 1 |
| Transition range (according to ACS) | pH 5,8 - pH 8,2 yellow - red |
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| Global Trade Item Number |
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| Catalogue Number | GTIN |
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| 1072410005 | 04022536088822 |
| 1072410025 | 04022536088839 |
| 1072410100 | 04022536088846 |
| 1072411000 | 04022536088853 |
