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CAS RN: 4197-07-3 | Product Number: C0547

Chromotrope 2R

  • Acid Red 29
  • 4,5-Dihydroxy-3-phenylazo-2,7-naphthalenedisulfonic Acid Disodium Salt
1   ≥20 

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Product Number C0547
Molecular Formula / Molecular Weight C__1__6H__1__0N__2Na__2O__8S__2 = 468.36  
Physical State (20 deg.C) Solid
CAS RN 4197-07-3
Reaxys Registry Number 10630826
PubChem Substance ID 87565655
Colour Index 16570
MDL Number


Appearance Amber to Brown powder to crystal
Lambda max. 508.0 to 512.0 nm(MeOH)
Absorbance(E1%1cm) min. 350(MeOH, 508.0 to 512.0 nm)
Properties (reference)
Maximum Absorption Wavelength 510(MeOH) nm
Pictogram Pictogram
Signal Word Warning
Hazard Statements H315 : Causes skin irritation.
H319 : Causes serious eye irritation.
Precautionary Statements P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ eye protection/ face protection.
P302 + P352 : IF ON SKIN: Wash with plenty of water.
P337 + P313 : If eye irritation persists: Get medical advice/ attention.
P362 + P364 : Take off contaminated clothing and wash it before reuse.
P332 + P313 : If skin irritation occurs: Get medical advice/ attention.
Related Laws:
EC Number 224-085-0
RTECS# QJ6418000
Transport Information:
HS Number 3204120090
PubMed Literature

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