네오쿠프로인

한글명:네오쿠프로인

카스 번호484-11-7

상품명:Neocuproine

CBNumberCB0429520

분자식C14H12N2

포뮬러 무게208.26

MOL 파일484-11-7.mol

동의어(한글)

네오쿠프로인

화학적 성질

녹는점	159-164 °C
끓는 점	337.46°C (rough estimate)
밀도	1.1345 (rough estimate)
굴절률	1.6152 (estimate)
RTECS 번호	SF8380000
저장 조건	Keep in dark place,Sealed in dry,Room Temperature
용해도	메탄올: 0.1 g/mL, 투명
물리적 상태	수정 같은
산도 계수 (pKa)	6.01±0.30(Predicted)
색상	흰색에서 베이지색
수용성	약간 용해됨
감도	Light Sensitive
Merck	6449
InChIKey	IYRGXJIJGHOCFS-UHFFFAOYSA-N
CAS 데이터베이스	484-11-7(CAS DataBase Reference)
NIST	1,10-Phenanthroline, 2,9-dimethyl-(484-11-7)
EPA	1,10-Phenanthroline, 2,9-dimethyl- (484-11-7)

위험 및 안전 성명

위험품 표기

Xi,Xn

위험 카페고리 넘버

36/37/38-20/21/22-22

안전지침서

26-36/37/39-36-24/25

WGK 독일

TSCA

Yes

HS 번호

29339990

NFPA 704:

	0
2		0

그림문자(GHS)

네오쿠프로인 MSDS

네오쿠프로인 화학적 특성, 용도, 생산

화학적 성질
OFF-WHITE TO VERY PALE YELLOW CRYSTALLINE POWDER
용도
Due to the steric hindrance of the methyl groups attached to the carbon atoms adjacent to the nitrogen donor atoms of phenanthroline, the reagent does not give the low spin vivid red complex characteristic of phenanthroline derivatives with iron(II). However, in the presence of reducing agents it reacts with copper to give a copper(I) complex of composition MA2 and of tetrahedral symmetry. This chelate is insoluble in water and can be extracted by chloroform in which the absorption maximum of the complex appears at 457 nm. In this way the concentration of the complex can be measured. The method is suitable for the determination of copper in iron, manganese and vanadium ores even in the presence of aluminium, germanium, titanium and silicon.
Neocuproine is today considered one of the most selective reagents. Unfortunately, it is rather expensive. 2,3-bis-(2-pyridyl)quinoxaline, prepared by Belcher et al. by condensation of o-diketone, 2,2'-dipyridyl and 0-phenylenediamine(44) contains the functional grouping characteristic of cuproine; it is quite suitable for the determination of copper and it is cheap. Starting with various substituted o-phenylene-diamines Belcher synthesized 25 different quinoxaline derivatives, of which 2,3-bis-[2-(-methyl)-pyridyl)]quinoxaline proved to be identical with neocuproine as regards analytical selectivity. Besides copper, titanium(III) is the only metal ion which gives a colour reaction with the reagent. However, the coloured titanium(III) complex is formed only at lower pH and hence it does not interfere with the determination of copper. The copper complex of the reagent can be extracted quantitatively with isopentyl alcohol usually as a perchlorate ion pair.
정의
ChEBI: A member of the class of phenanthrolines that is 1,10-phenanthroline bearing two methyl substituents at positions 2 and 9.
Purification Methods
Purifiy it as the hemihydrate by crystallisation from water and as the anhydrous base from *benzene. [Beilstein 23/8 V 527.]

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