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25721-38-4

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25721-38-4 Usage

General Description

Lead picrate (dry) [Forbidden] is a highly toxic and dangerous chemical compound that is prohibited for use due to its extreme toxicity and explosive nature. Lead picrate is a sensitive, friction-sensitive, and shock-sensitive explosive material that poses a significant risk to health and safety. It is classified as a forbidden substance because of its potential for detonation when exposed to heat, flame, or mechanical shock, making it extremely hazardous to handle and transport. Lead picrate is a powerful oxidizing agent and can react violently with other chemicals, further increasing the risk of accidents and explosions. Due to its highly hazardous nature, lead picrate is strictly regulated and banned for use in any industrial, research, or scientific applications.

Check Digit Verification of cas no

The CAS Registry Mumber 25721-38-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,7,2 and 1 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 25721-38:
(7*2)+(6*5)+(5*7)+(4*2)+(3*1)+(2*3)+(1*8)=104
104 % 10 = 4
So 25721-38-4 is a valid CAS Registry Number.

25721-38-4Upstream product

25721-38-4Downstream Products

25721-38-4Relevant articles and documents

Extraction of lead picrate by 18-crown-6 ether into various diluents: Examples of sub-analysis of overall extraction equilibrium based on component equilibria

Kudo, Yoshihiro,Takahashi, Yuu,Numako, Chiya,Katsuta, Shoichi

, p. 121 - 129 (2014)

Extraction constants for lead picrate, PbPic2, with 18-crown-6 ether (L) from aqueous solutions at a narrow range of ionic strength (I) into eleven diluents were determined at 298 K by AAS measurements. These constants were defined as Kex

Synthesis, characterization and extraction studies of a new vic-dioxime and its complexes containing bis(diazacrown ether) moieties

Bilgin, Ahmet,Ertem, Beytullah,A?in, Fatma Din?,G?k, Ya?ar,Karslio?lu, Selami

, p. 3165 - 3172 (2008/10/09)

A new vicinal dioxime ligand containing bis(diazadioxa-12-crown-4 ethoxy) units (H2L) has been synthesized by the reaction of cyanogendi-N-oxide with 3,4-bis(2-{10-[(4-methylphenyl)sulfonyl]-1,7-dioxa-4,10-diazacyclododecan-4-yl}ethoxy)aniline, which was prepared by the reduction of 4-[(4-methlyphenyl)sulfonyl]-10-[2-((4-nitro-2-{2-[10-phenylsulfonyl)-1,7-dioxa-4,10-diazacyclododecan-4-yl]ethoxy}phenoxy)ethyl]-1,7dioxa-4,10-diazacyclododecan. A mononuclear nickel(II) and copper(II) complexes with a metal:ligand ratio of 1:2 for H2L were also synthesized. The mononuclear cobalt(III) complex of H2L has been isolated with L′ = pyridine, together with chlorine as an axial ligand. In addition, a cobalt(III) complex containing the BF2+ bridge macrocycle was synthesized using a precursor hydrogen-bridged cobalt(III) complex via the template effect. The extraction abilities of 1, 3, 6 and 10 were also evaluated in 1,2-dichloroethane by using several alkali (Li+, Na+, K+, Cs+) and transition metal picrates such as Ag+, Pb2+, Cd2+, Cu2+, Zn2+. The structure of the dioximes and their complexes are proposed according to elemental analyses, 1H and 13C NMR, FT-IR UV-Vis and mass spectra.

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