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4-NITROBENZENEDIAZONIUM TETRAFLUOROBORATE

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4-NITROBENZENEDIAZONIUM TETRAFLUOROBORATE Basic information

Product Name:
4-NITROBENZENEDIAZONIUM TETRAFLUOROBORATE
Synonyms:
  • AZOIC DIAZO NO 37
  • CI 37035
  • FAST RED GG SALT
  • AKOS MSC-0141
  • 4-NITROBENZENESIAZONIUM TETRAFLUOROBORATE
  • p-nitro-benzenediazoniutetrafluoroborate(1-)
  • 4-nitrobenzenediazonium tetrafluorborate
  • 4-NitrobenzenediazoniumTetrafluoroborate98%
CAS:
456-27-9
MF:
C6H4BF4N3O2
MW:
236.92
EINECS:
207-261-1
Product Categories:
  • Aromatics Compounds
  • B (Classes of Boron Compounds)
  • Organic-metal salt
  • Tetrafluoroborates
  • Aromatics
Mol File:
456-27-9.mol
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4-NITROBENZENEDIAZONIUM TETRAFLUOROBORATE Chemical Properties

Melting point:
144-148 °C (dec.)
Density 
1.66 g/cm3(Temp: 25 °C)
storage temp. 
2-8°C
solubility 
Soluble in acetonitrile and dimethyl sulfoxide.
form 
powder
color 
White to Yellow to Orange
Water Solubility 
almost transparency
BRN 
3599869
Exposure limits
ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3
Stability:
Stable. Incompatible with strong oxidizing agents, moisture, strong bases. Avoid mechanical shock.
CAS DataBase Reference
456-27-9(CAS DataBase Reference)
EPA Substance Registry System
Benzenediazonium, 4-nitro-, tetrafluoroborate(1-) (456-27-9)
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Safety Information

Hazard Codes 
Xn,Xi,C
Risk Statements 
20/21/22-36/37/38-34
Safety Statements 
22-24/25-36/39-45-36/37/39-26
RIDADR 
UN 1759 8/PG 2
WGK Germany 
3
RTECS 
CZ1723000
4.3
Hazard Note 
Irritant
TSCA 
Yes
HazardClass 
8
PackingGroup 
III
HS Code 
2931900090

MSDS

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4-NITROBENZENEDIAZONIUM TETRAFLUOROBORATE Usage And Synthesis

Chemical Properties

Pale Yellow Solid

Uses

4-Nitrobenzenediazonium tetrafluoroborate is widely used as a standard reagent in organic synthesis. It is used as a dye for enterochromaffin cells. It is used for the spectrophotometric determination of common aromatic diisocyanates [toluene-2,4-diyl diisocyanate and 4,4'-methylenebis(phenyl isocyanate)] and gallic acid. It is also used for tissue staining and determination of trace phenols.

Purification Methods

It crystallises from water. [Whetsch et al. J Am Chem Soc 78 3360 1956, Beilstein 16 IV 816.] It can be EXPLOSIVE when dry.

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