DIETHYL DIBROMOMALONATE CAS 631-22-1

Product Description:

Khoom npe: DIETHYL DIBROMOMALONATE CAS NO: 631-22-1

Synonyms:

Propanedioic acid, dibromo-, diethyl ester;

Diethyl dibromomalonate;

Diethyl 2,2-dibromomalonate;

Tshuaj& Lub cev muaj zog:

Cov tsos mob: tsis muaj xim rau cov kua daj daj

Kev Ntsuas: ≥99.0%

Qhov ceev: 1.68

Kub taw tes: 108 ℃ (4 torr)

Flash Point:> 110 ℃

Refractive Index: n20/D 1.484 (lit.)

Cov ntaub ntawv kev nyab xeeb:

Cov Lus Qhia Txog Kev Nyab Xeeb: S26-S36/37/39-S45

HS Code: 2917190090

Packing Group: III

RIDADR: UN 1760

Risk Nqe: R34

Diethyl dibromomalonate tuaj yeem siv los ua cov khoom nruab nrab hauv cov tshuaj synthesis.

Nrog diethyl malonate thiab sodium bromide ua raw cov ntaub ntawv, cov txheej txheem cov tshuaj tiv thaiv yog raws li nram no: Diethyl malonate (0.160g, 1mmol), sodium bromide (0.206g, 2mmol), cuprous bromide (0.014g, 0.1mmol), manganese acetate (1 phau ntawv tshuaj. 89g, 7mmol) thiab acetic acid (10ml) tau ntxiv rau hauv cov tshuaj tiv thaiv lub khob ntawm 60 ℃ rau cov tshuaj tiv thaiv. TLC ua raws cov lus teb kom txog thaum ua tiav; Tom qab cov tshuaj tiv thaiv, cov khoom nyoos tau muab cais los ntawm kem chromatography (ethyl acetate: roj av ether=1:20), thiab lub hom phiaj khoom dibromomalonate (74% tawm los) tau txais.

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Cov khoom raws li patent muaj rau R& D lub hom phiaj nkaus xwb. Txawm li cas los xij, lub luag haujlwm kawg tsuas yog nrog tus neeg yuav khoom.

Cim npe nrov: Diethyl Dibromomalonate CAS 631-22-1, tuam ntxhab, lwm tus muag khoom, Hoobkas, yuav, hauv Tshuag

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