Detail of "459-64-3"

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CAS Number:
459-64-3
Name:
4-Methoxybenzenediazonium tetrafluoroborate
Molecular Structure:
Formula:
C₇H₇N₂O^.BF₄
Molecular Weight:
221.95
Synonyms:
4-METHOXYBENZENEDIAZONIUM TETRAFLUOROBORATE;4-MethoxybenzenediazoniumTetrafluoroborate98%
EINECS:
207-296-2
Density:
g/cm³
Melting Point:
142-144 °C(lit.)
Boiling Point:
°Cat760mmHg
Flash Point:
°C
Hazard Symbols:
Risk Codes:
R34
Safety:
Hazard Codes C
Risk Statements 34
Safety Statements 26-36/37/39-45
RIDADR UN 3261 8/PG 2

WGK Germany 3

F 10-21
HazardClass 8
PackingGroup III
Details
Transport Information:
UN 3261

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98%

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4-Methoxybenzenediazonium tetrafluoroborate

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Light-induced polymer and polymerization reactions: Light-induced polymer and polymerization reactions. 14. Radical photopolymerization by potassium tris(oxalato)cobaltate-arylonium salt systems. Baumann, H.; Strehmel, B.; Timpe, H. J.; Lammel, U. (Sekt. Chem., Tech. Hochsch. "Carl Schorlemmer", Leuna-Merseburg, Ger. Dem. Rep.). J. Prakt. Chem., 326(3), 415-25 (German) 1984. CODEN: JPCEAO. ISSN: 0021-8383. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 74 The photopolymn. of acrylamide [79-06-1] by tri-K trisoxalatocobaltate (I) [14239-07-7] is inefficient because the ·CO2- radicals formed are oxidized or terminate with polymer radicals. Adding onium salts increases the initiation efficiency in the order p-MeOC6H4N2+BF4- [459-64-3] >Ph2I+Cl- [1483-72-3] >PhCOCH2SMe2+BF4- [24806-57-3] >Ph3S+BF4- [437-13-8]. A mechanism is proposed, based on quantum yields and including electron transfer from ·CO2- to onium compds., giving radicals which also initiate polymn. The reaction order in monomer concn. decreases in the presence of Ph2I+ from 1.4 to 1.1. Quantum yields for polymn. are higher in the presence of I than in that of the corresponding ferrate complex.

The effect of surfactants on the kinetics of diazo coupling between p-methoxybenzenediazonium ions and a-naphthylamine: The effect of surfactants on the kinetics of diazo coupling between p-methoxybenzenediazonium ions and a-naphthylamine. Tentorio, A.; Gatti, B.; Carlini, F. M. (Ist. Guido Donegani, Novara 28100, Italy). Dyes Pigm., 6(2), 107-14 (English) 1985. CODEN: DYPIDX. ISSN: 0143-7208. DOCUMENT TYPE: Journal CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) The effect of anionic, cationic, and nonionic surfactants on the reaction rate between p-methoxybenzenediazonium tetrafluoroborate [459-64-3] and a-naphthylamine [134-32-7] was examd. Strong catalytic activity was shown by the micelles of Na lauryl sulfate [151-21-3], while limited variations of the rate of reaction could be detected in the presence of micelles of Triton X-100 [9002-93-1] and cetyltrimethylammonium bromide [57-09-0].