Specification
Product Name 4-(2-PYRIDYLAZO)RESORCINOLMONOSODIUM
SALT (PAR)
Synonyms P.A.R.
CAS NO. 16593-81-0
Molecular Formula C11H8N3NaO2.H2O
Formula Weight 255.21
Appearance Dark-Orange to Brown Powder
Structure
   
Tests    Limits
Absorption Maximum (Dist. water) λ max.

- 410 - 413nm

Absorptivity (A1%/1cm in dist. Water,
at λ max on dried substance)

- > 1100

Loss on drying (110°C)

- < 8%

Suitability as metal indicator - To Passes Test
   
   
REVISED: 1-1-2012  
 
 
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