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Merck 108176 0025 Thymol Blue indicator Acs 25 GR.
Merck 108176 0025 Thymol Blue indicator Acs 25 GR.

Merck 108176 0025 Thymol Blue indicator Acs 25 GR.

Ürün Kodu:1081760025
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Ürün Açıklaması
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Description
Catalogue Number108176
SynonymsThymolsulfonphthalein
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Product Information
CAS number76-61-9
EC number200-973-3
GradeACS,Reag. Ph Eur
Hill FormulaC₂₇H₃₀O₅S
Molar Mass466.60 g/mol
HS Code2934 99 90
Structure formula ImageStructure formula Image
Quality LevelMQ200
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Physicochemical Information
Density0.979 g/cm3
Melting Point221 °C (decomposition)
Bulk density350 kg/m3
Solubility0.11 g/l
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Safety Information according to GHS
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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Storage and Shipping Information
StorageStore at +15°C to +25°C.
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Specifications
Clarity of solution (1 g/l; ethanol)passes test
Identity (UV/VIS-Spectrum)passes test
1st transition rangepH 1.2 - pH 2.8 violet red - brownish yellow
2nd transition rangepH 7.8 - pH 9.5 greenish yellow - blue
Absorption maximum λ 1 max. (buffer pH 1,2)543 - 547 nm
Absorption maximum λ 2 max. (buffer pH 2,8)431 - 437 nm
Absorption maximum λ 3 max. (buffer pH 7.8)431 - 437 nm
Absorption maximum λ 4 max. (buffer pH 9.5)594 - 598 nm
Spec. Absorptivity A 1%/1cm (λ 1 max.; 0.01 g/l; buffer pH 1,2; calc. on dried substances)580 - 720
Spec. Absorptivity A 1%/1cm (λ 2 max.; 0.01 g/l; buffer pH 2,8; calc. on dried substances)250 - 370
Spec. Absorptivity A 1%/1cm (λ 3 max.; 0.01 g/l; buffer pH 7.8; calc. on dried substances)250 - 370
Spec. Absorptivity A 1%/1cm (λ 4 max.; 0.01 g/l; buffer pH 9.5; calc. on dried substances)580 - 700
Loss on drying (110 °C)≤ 5 %
Transition range (according to ACS)passes test
Sensitivity testpasses test

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