HYDROXY NAPTHOL BLUE (INDICATOR FOR CALCIUM DETERMINATION)*

HYDROXY NAPTHOL BLUE (INDICATOR FOR CALCIUM DETERMINATION)
Article No. Grade Purity Cas no. Molecular Formula Molecular Weight H.S. Code Shelf Life
H0109900025 Indicator grade 63451-35-4 C20H11N2Na3O11S3 620.48 2927.0090
60 Months

Physical Properties

Physical state at 20 °C

Solid

Colour

Balck powder

Odour

Odorless

Melting Point/ Freezing point [°C]

801°C

Boiling point [°C]

1413°C

Vapour pressure mm/Hg

1.0 mm Hg @ 8650C

Solubility in water [% weight]

Soluble in water

Specifications

Appearance:

 Dark bluish black powder

Solubility (0.1 % in distilled water):

 Passes test

Absorption maxima (A1%; 1 cm; pH 12.0; on dried substance):

 646 nm

Loss on dryig (at 105°C; 1 hr):

 < 5%

Safety Information and Hazard Symbols

Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338
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Globally Harmonized System of classification and Labelling of Chemicals (GHS)

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