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Merck 103168 0025 Eriochrome Black Blue Metal İndicator 25 GR.
Merck 103168 0025 Eriochrome Black Blue Metal İndicator 25 GR.

Merck 103168 0025 Eriochrome Black Blue Metal İndicator 25 GR.

Ürün Kodu:1031680025
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Ürün Açıklaması
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Description
Catalogue Number103168
Synonyms2-Hydroxy-1-(1-hydroxy-2-naphthylazo)-naphthalene-4-sulfonic acid sodium salt
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Product Information
CAS number3564-14-5
EC number222-639-6
Hill FormulaC₂₀H₁₃N₂NaO₅S
Molar Mass416.39 g/mol
HS Code3212 90 90
Structure formula ImageStructure formula Image
Quality LevelMQ200
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Physicochemical Information
pH value9.5 (10 g/l, H₂O, 20 °C)
Bulk density540 kg/m3
Solubility20 g/l
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Toxicological Information
LD 50 oralLD50 Rat > 5000 mg/kg
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Safety Information according to GHS
Hazard Pictogram(s)Hazard Pictogram(s)\n
Hazard Statement(s)H319: Causes serious eye irritation.
Precautionary Statement(s)P264: Wash skin thoroughly after handling.\nP280: Wear eye protection/ face protection.\nP305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.\nP337 + P313: If eye irritation persists: Get medical advice/ attention.
Signal WordWarning
RTECSQK2195000
Storage class10 - 13 Other liquids and solids
WGKWGK 3 highly hazardous to water
Disposal3\nRelatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.
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Safety Information
Categories of dangerirritant
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Storage and Shipping Information
StorageStore at +15°C to +25°C.
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Specifications
Identity (UV/VIS-Spectrum)passes test
Absorption maximum λmax. (buffer pH 10.0)634 - 644 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.025 g/l; buffer pH 10.0; calculated on anhydrous substance)220 - 320
Loss on drying (110 °C)≤ 10 %
Suitability as indicator (for metal titration)passes test

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