Improved spectrophotometric analysis of barium styphnate

Conference · Sat Jan 01 00:00:00 EST 1983

OSTI ID:5667541

Brown, N E; Blasi, J A

A spectrophotometric procedure to determine the purity of barium styphnate monohydrate based upon the absorbance of the styphnate ion at 326 and 413.3 nm has been developed. The purity is determined by comparing the absorbance of the styphnate ion in barium styphnate and in styphnic acid. Our investigation has shown that the molar absorptivity and lambda maxima of the styphnate ion are quite pH dependent; therefore, the pH is buffered to 6.8 to 7.0 with ammonium acetate. Under these conditions the molar absorptivity is 1.6 x 10/sup 4/ L/mol-cm. Analyses following the procedure in the Navy specification WS13444A using water were found to give low molar absorptivities (1.3 x 10/sup 4/ L/mol-cm) for the styphnic acid calibration resulting in erroneous values for barium styphnate purity.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5667541
• Report Number(s): SAND-83-0944C; CONF-8310159-3; ON: DE84000449
• Resource Relation: Conference: Joint symposium on compatibility of plastics/materials with explosives, propellents and pyrotechnics, Lake Ozard, MO, USA, 31 Oct 1983
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
BARIUM COMPOUNDS
SPECTROPHOTOMETRY
CHEMICAL EXPLOSIVES
ABSORPTIVITY
IMPURITIES
ALKALINE EARTH METAL COMPOUNDS
EXPLOSIVES
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
400104* - Spectral Procedures- (-1987)
450100 - Military Technology
Weaponry
& National Defense- Chemical Explosions & Explosives