Fumaric acid CAS 110-17-8

Chemical Property:

Molecular Formula	C4H4O4
Molar Mass	116.07 Nws
Qhov ntom	1.62 ib
Melting Point	298-300 ° C (sub.) (lit.)
Boling Point	137.07°C (kev kwv yees)
Flash Point	230 ° C
JECFA Number	618
Dej Solubility	0.63 g / 100 mL (25 ºC) yog '
Solubility	Soluble nyob rau hauv DMSO, dej, insoluble nyob rau hauv fat-soluble organic solvents
Vapor Siab	1.7 hli Hg (165 ° C)
Qhov tshwm sim	Dawb hmoov los yog tsis muaj xim siv lead ua
Xim	Dawb
Merck	14, 4287 ib
BRN	6 05763
pKa	3.02, 4.38 (ntawm 25 ℃)
PH	3.19 (1 mM tov); 2.57 (10 mM tov); 2.03 (100 mM tov);
Kev cia khoom	Khaws hauv qab +30 ° C.
Kev ruaj ntseg	Nyob ruaj khov ntawm chav tsev kub. Decomposes nyob ib ncig ntawm 230 C. Incompatible nrog muaj zog oxidizing cov neeg ua hauj, hauv paus, txo cov neeg ua hauj. Hluav taws kub.
rhiab heev	Yooj yim absorbing noo noo
Explosive txwv	40%
Refractive Index	1.5260 (kwv yees)
MDL	PAB 000002700
Physical thiab Chemical Properties	Cov yam ntxwv ntawm monoclinic tsis muaj xim zoo li koob lossis lobular Crystal, txiv hmab txiv ntoo qaub saj. solubility: me ntsis soluble hauv dej, ether thiab acetic acid, soluble hauv ethanol. Yuav luag insoluble hauv chloroform.
Siv	Rau kev tsim khoom ntawm Unsaturated Polyester Resin, tshuaj tua kab, acid thiab amino acids

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Product Detail

Khoom cim npe

Hazard Cov Cim	Xi-Nyob
Risk Codes	36 – Khaus qhov muag
Kev nyab xeeb piav qhia	26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob.
UN IDs	TIAB SA 9126
WGK Germany	1
RTECS	ib 9625000
TSCA	Yog lawm
HS Code	29171900 ib
Toxicity	LD50 qhov ncauj hauv luav: 9300 mg/kg LD50 dermal Rabbit 20000 mg/kg

Taw qhia

Fumaric acid. Cov hauv qab no yog kev qhia txog cov khoom, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb ntawm transbutalic acid:

Zoo:

- Transbutadiic acid yog cov xim tsis muaj xim lossis cov khoom dawb nrog cov pungent qaub saj.

- Nws yog soluble hauv dej thiab ntau cov kuab tshuaj organic xws li cawv thiab ethers.

- Thaum qhov kub thiab txias, transbutylic acid tawg los tsim carbon dioxide thiab acetone.

Siv:

- Nws yog dav siv hauv kev npaj ntawm polyester resins rau kev tsim khoom xws li txheej, yas, thiab fibers.

Txoj kev:

- Transbutenedic acid tuaj yeem tau txais los ntawm cov tshuaj tiv thaiv ntawm brominated butene thiab sodium carbonate. Cov txheej txheem synthesis tshwj xeeb suav nrog ntau cov kauj ruam, suav nrog kev npaj ntawm butene, tshuaj tiv thaiv bromination, thiab alkaline hydrolysis.

Cov ntaub ntawv kev nyab xeeb:

- Transbutadiic acid yog ib qho tshuaj tiv thaiv uas yuav ua rau khaus thiab kub hnyiab ntawm daim tawv nqaij thiab qhov muag.

- Hnav cov khoom tiv thaiv tus kheej tsim nyog xws li hnab looj tes, tsom iav, thiab khaub ncaws tiv thaiv thaum tuav.

- Tsis txhob nqus nws cov plua plav lossis vapors thiab yuav tsum ua haujlwm hauv qhov chaw uas muaj cua zoo.

- Cov kev cai hauv zos thiab cov txheej txheem kev nyab xeeb yuav tsum tau ua raws thaum khaws cia thiab tuav cov khoom sib xyaw.

Yav dhau los: Isopropylamine CAS 75-31-0

Tom ntej: (+/-)-COREY LACTONE, 5-(4-PHENYLBENZOATE) CAS 54382-73-9

Sau koj cov lus ntawm no thiab xa tuaj rau peb