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Fumaric acid CAS 110-17-8

Ngwongwo kemịkalụ:

Usoro ihe omimi C4H4O4
Molar Mass 116.07
Njupụta 1.62
Ebe Na-agbaze 298-300 Celsius C (sbl.) (ọkụ)
Ebe Boling 137.07°C (atụmatụ siri ike)
Ebe mgbari 230 Celsius C
Nọmba JECFA 618
Mmiri Solubility 0.63 g/100 ml (25 ºC)
Solubility Soluble na DMSO, mmiri, ihe na-adịghị edozi na abụba-soluble organic solvents
Uzuoku nrịbama 1.7 mm Hg (165 Celsius C)
Ọdịdị Ọcha ntụ ntụ ma ọ bụ kristal na-enweghị agba
Agba Ọcha
Merck 14,4287
BRN 605763
pKa 3.02, 4.38 (na 25 ℃)
PH 3.19 (1 mM ngwọta);2.57 (10 mM ngwọta);2.03 (100 mM ngwọta);
Ọnọdụ Nchekwa Chekwaa n'okpuru +30 Celsius.
Nkwụsi ike Kwụsie ike na ụlọ okpomọkụ. Na-emebi emebi na gburugburu 230 C. Na-ekwekọghị na ihe ndị na-emepụta oxidizing siri ike, ntọala, ndị na-ebelata ihe. Na-agbanyụ ọkụ.
Mmetụta Na-amịkọrọ mmiri ngwa ngwa
Oke ihe mgbawa 40%
Ntụgharị ntụgharị uche 1.5260 (atụmatụ)
MDL MFCD00002700
Njirimara anụ ahụ na kemịkalụ Njirimara nke monoclinic enweghị agba agịga-dị ka ma ọ bụ lobular Crystal, mkpụrụ utoojoo uto.
solubility: ntakịrị soluble na mmiri, ether na acetic acid, soluble na ethanol. Ọ fọrọ nke nta ka ọ ghara ịsacha ya na chloroform.
Jiri Maka mmepụta nke polyester resin unsaturated, pesticides, acid na amino acids

Nkọwa ngwaahịa

Mkpado ngwaahịa

Akara egwu Xi - mgbakasị ahụ
Koodu ihe egwu 36 - na-akpasu iwe na anya
Nkọwapụta nchekwa 26 - N'ihe banyere kọntaktị na anya, kpochaa ozugbo na ọtụtụ mmiri ma chọọ ndụmọdụ ahụike.
NJ UN UN 9126
WGK Germany 1
RTECS LS9625000
TSCA Ee
Koodu HS 29171900
Nsi LD50 ọnụ na oke bekee: 9300 mg / kg LD50 dermal oke bekee 20000 mg / kg

 

Okwu mmalite

Fumaric acid. Ihe na-esonụ bụ mmalite nke akụrụngwa, ojiji, ụzọ nkwadebe na ozi nchekwa nke transbutalic acid:

 

Ogo:

- Transbutadiic acid bụ kristal na-enweghị agba ma ọ bụ nke siri ike na-acha ọcha nke nwere uto utoojoo.

- Ọ bụ soluble na mmiri na ọtụtụ organic solvents dị ka alcohols na ethers.

- N'ebe okpomọkụ dị elu, transbutylic acid na-akụda iji mepụta carbon dioxide na acetone.

 

Jiri:

- A na-eji ya eme ihe n'ọtụtụ ebe na nkwadebe nke resins polyester maka imepụta ngwaahịa dịka mkpuchi, plastik, na eriri.

 

Usoro:

- Enwere ike nweta transbutenedic acid site na mmeghachi omume nke butene brominated na sodium carbonate. Usoro njikọ a kapịrị ọnụ gụnyere ọtụtụ usoro, gụnyere nkwadebe nke butene, mmeghachi omume bromination, na alkaline hydrolysis.

 

Ozi nchekwa:

- Transbutadiic acid bụ ihe na-akpasu iwe nke nwere ike ime ka mgbakasị ahụ na ọkụ na kọntaktị na akpụkpọ ahụ na anya.

- Yiri akụrụngwa nchebe kwesịrị ekwesị dị ka uwe aka, ugogbe anya, na uwe nchebe mgbe a na-ejikwa ya.

- Zere ikuru uzuzu ya ma ọ bụ vapors ma rụọ ọrụ na mpaghara ikuku nke ọma.

- Ekwesịrị ịgbaso iwu mpaghara na usoro ọrụ nchekwa mgbe ị na-echekwa ma na-ejikwa ogige ahụ.

 


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