Merck 107241 0025 Phenol Red indicator Ph 6,4 – 8,2 Acs 25 GR.

Merck 107241 0025 Phenol Red indicator Ph 6,4 – 8,2 Acs 25 GR.

150.67 ( KDV Dahil )

indicator ACS CAS #: 143-74-8 EC Number: 205-609-7

Stok kodu: 107241.0025 Kategoriler: ,

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Description
Catalogue Number 107241
Description Phenol red

Product Information
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 90
Structure formula Image Structure formula Image
Quality Level MQ200

Physicochemical Information
Melting Point >300 °C
Bulk density 200 – 300 kg/m3
Solubility 0.77 g/l

Safety Information according to GHS
Hazard Pictogram(s) 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 3
Relatively 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
Storage Store at +5°C to +30°C.

Specifications
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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