12255-09-3 Usage
General Description
Neodymium arsenide is a synthetic chemical compound containing neodymium, a rare-earth metal, and arsenic, a metalloid element. The compound is generally represented by the formula NdAs, denoting one neodymium atom combined with one arsenic atom. Neodymium arsenide generally appears as a crystalline solid and exhibits properties typical of a semiconductor, being widely used in a range of industries, such as electronics and optoelectronics. However, due to the presence of arsenic, it is toxic if ingested or inhaled, and precautions are necessary when handling this compound.
Check Digit Verification of cas no
The CAS Registry Mumber 12255-09-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,2,5 and 5 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 12255-09:
(7*1)+(6*2)+(5*2)+(4*5)+(3*5)+(2*0)+(1*9)=73
73 % 10 = 3
So 12255-09-3 is a valid CAS Registry Number.
12255-09-3Relevant articles and documents
Quaternary rare earth transition metal arsenide oxides RTAsO (T = Fe, Ru, Co) with ZrCuSiAs type structure
Quebe,Terbuechte,Jeitschko
, p. 70 - 74 (2008/10/08)
The equiatomic quaternary compounds RFeAsO (R = La-Nd, Sm, Gd), RRuAsO (R = La-Nd, Sm, Gd-Dy) and RCoAsO (R = La-Nd) crystallize with the tetragonal ZrCuSiAs type structure, which was refined from single-crystal X-ray diffractometer data of PrFeAsO: P4/nmm, Z = 2, a = 398.5(1) pm, c = 859.5(3) pm, R = 0.058 for 167 structure factors and 12 variable parameters. All atomic positions are fully occupied. Chemical bonding in PrFeAsO can be rationalized with oxidation numbers corresponding to the formula Pr+3Fe+2As-3O-2. An electron count of 18 for the iron atoms can only be achieved if Fe-Fe interactions of 281.8 pm pm are considered as bonding.
