The Raman spectra of three ring vibrational modes and and the Fermi resonance of ethylene (m 5 , m 6 m 7 ) m 2 -2m 7 carbonate in the solvents TMOS, benzene, methanol and water were studied as a function of concentration at room temperature. The pure dilution e β ect in non-polar solvents, as expecte
Effect of Ammonium Hydrogen Carbonate and Sodium Bromide on the Flammability of Hardboard
β Scribed by B. Garba; F. W. Abdulrahman; M. E. Obaseki
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 244 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0308-0501
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β¦ Synopsis
The fire retardancy properties of hardboard treated with ammonium hydrogen carbonate (AHC) and sodium bromide were investigated by measuring their ignition time and flame temperature. An increase in ignition time and lowered flame temperature were observed with increased flame retardant (FR) concentration. AHC was found to be less effective as a fire retardant for this material.
π SIMILAR VOLUMES
The crystal structures of ammonium permanganate and ammonium perchlorate at 293 K were determined and compared. X-ray and vibrational spectroscopic data confirmed the existence of weak hydrogen bonds in NH 4 MnO 4 . These hydrogen bonds proved to be slightly stronger than H-bonds in ammonium perchlo
Pseudoisocyanine (PIC) was adsorbed on colloidal silver halide nanoparticles where it formed aggregates (J-aggregates). The nanoparticles were prepared using a surfactant (AOT)/nheptane/water microemulsion. The molecules of pseudoisocyanine replaced the molecules of surfactant (AOT) on the surface o
Effects of sodium chloride (NaCl), guanidine hydrochloride (GuHCl), or sucrose on the viscoelasticity of sodium hyaluronate (NaHA) solutions were studied. NaCl and GuHCl decreased both storage and loss moduli, while sucrose increased both moduli. The critical concentration C\* was determined as an i