Detail of "16872-09-6"

Reference

Change in oxidative stability of pyrolysis products of carborane acetal-modified furan polymers

Change in oxidative stability of pyrolysis products of carborane acetal-modified furan polymers. Shlykov, S. V.; Tseitlin, G. M.; Baicher, L. A.; Zlatkis, A.; Zinovich, Z. K. (Mosk. Khim.-Tekhnol. Inst., Moscow, USSR). Deposited Doc., VINITI 1637-83, 10 pp. Avail. VINITI (Russian) 1983. DOCUMENT TYPE: Report CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 49, 57 Poly(difurfurylidenacetone) (I) [26375-43-9] and poly(furfuryl alc.) (II) [25212-86-6] modified with o-carborane (III) [16872-09-6] or its acetal deriv. (IV) as additives were carbonized by heating in a reducing atm. at 10°/h to 1000°. The carbonized products were ground and oxidized at 600 ± 2.5°. III decreased the oxidn. rate of coke residues from both I and II, but IV significantly decreased the oxidn. rate for coke from II only, with the oxidn. rate decreasing with increasing B content in the coke. The presence of IV in the polymers had no effect on coke yield during carbonization, whereas III caused a decrease in coke yield.

Neutron dosimetry with boron-doped CR-39 plastic

Neutron dosimetry with boron-doped CR-39 plastic. Tsuruta, Takao; Juto, Norimichi (At. Energy Res. Inst., Kinki Univ., Higashiosaka 577, Japan). J. Nucl. Sci. Technol., 21(11), 871-6 (English) 1984. CODEN: JNSTAX. ISSN: 0022-3131. DOCUMENT TYPE: Journal CA Section: 71 (Nuclear Technology) As a highly sensitive, simple and nonradioactive n dosimeter, CR-39 [25656-90-0] plastic plates doped with a B compd. (ortho-carborane [16872-09-6]) were prepd. After thermal n irradn., the plates were etched in an aq. soln. of 30% KOH, at 60° for 2-16 h. The etch-pits generated by 10B(n,a)7Li reactions were then counted by using an optical microscope or an automatic track counting system. The d. of the etch-pits on an irradiated plate increases with the etching time. When the etching time is kept const., the etch-pit d. is proportional to the irradiated thermal n fluence. The proportional const. is termed sensitivity, which is 4.2 ′ 10-4 for a plate contg. ortho-carborane at a concn. of 0.5% by wt. and for etching time of 16 h. By considering background counts, a thermal n dose of 0.025 mSv can be measured with this plate. The plates are insensitive to visible-, UV-, x-, b- and g-rays and are easy to handle because the detector and converter are incorporated. There is no possibility of underestimating the dose equiv. due to fading. Furthermore, the isotopes of B are not radioactive and thus are radiol. safe.