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huahana

cyclopentadiene(CAS#542-92-7)

Waiwai Kemika:

ʻĀpana Molekala C5H6
Molar Mass 66.1
ʻO ka mānoanoa d40 0.8235; d410 0.8131; d420 0.8021; d425 0.7966; d430 0.7914
Lae hehee -85°; mp 32.5°
Lae Boling bp760 41.5-42.0°
Hiki i ka wai 10.3 mM ma 25 °C (shake flask-UV spectrophotometry, Streitwieser a me Nebenzahl, 1976)
Ka hikiwawe Hiki ke hui me ka acetone, benzene, carbon tetrachloride, a me ka etera. Hiki ke hoʻoheheʻe ʻia i loko o ka ʻakika acetic, aniline, a me carbon disulfide (Windholz et al., 1983).
Puʻupuʻu mahu 381 ma 20.6 °C, 735 ma 40.6 °C, 1,380 ma 60.9 °C (Stoeck a me Roscher, 1977)
Ka nana aku wai kala ʻole
Palena Hōʻike TLV-TWA 75 ppm (~202 mg/m3) (ACGIH,NIOSH, a me OSHA); IDLH 2000 ppm(NIOSH).
pKa 16 (ma 25 ℃)
Paʻa Paʻa ma ka lumi wela. ʻAʻole kūpono me nā mea hoʻoheheʻe, nā waikawa a me nā ʻano mea like ʻole. Hiki ke hana i nā peroxide i loko o ka waihona. Hiki ke hele i ka polymerization
Hōʻike Hōʻike nD16 1.44632
Na Waiwai Kino a Kimia He wai kala ʻole kēia huahana, MP-97.2 ℃, BP 40 ℃, n20D 1.4446, pili pono 0.805 (19/4 ℃), hiki ke hui pū me ka waiʻona, ether, benzene a me carbon tetrachloride, hiki ke hoʻoheheʻe ʻia i ka carbon disulfide, aniline, acetic acid a wai paraffin, insoluble in water. Ua lawe ʻia ka polymerization ma ka lumi wela e hana i ka dicyclopentadiene. cyclopentadiene dimer, MP -1 ℃, BP 170 ℃, n20D 1.1510, pili pili 0.986. Aia ka Cyclopentadiene ma ke ʻano he dimer.

Huahana Huahana

Huahana Huahana

UN ID 1993
Papa Hazard 3.2
Hui Pūʻulu III
Kaʻawaʻawa LD50 o ka dimer ma ka waha i nā ʻiole: 0.82 g/kg (Smyth)

 

Hoʻolauna

ʻO Cyclopentadiene (C5H8) he wai ʻala ʻole a me ka ʻala. He olefin paʻa paʻa ʻole ia i polymerized a ʻano hiki ke puhi ʻia.

 

Loaʻa i ka Cyclopentadiene ka nui o nā noi i ka noiʻi kemika. Hiki ke hoʻohana ʻia ma ke ʻano he mea maka no nā polymers a me nā rubbers e hoʻomaikaʻi ai i kā lākou mau waiwai kino a me nā kemika.

 

ʻElua mau ʻano kumu nui no ka hoʻomākaukau ʻana i ka cyclopentadiene: hoʻokahi i hana ʻia mai ka haki ʻana o ka aila paraffin, a hoʻomākaukau ʻia kekahi e ka hopena isomerization a i ʻole hydrogenation reaction o nā olefins.

 

ʻO ka Cyclopentadiene ka mea hiki ke hoʻoheheʻe ʻia, a he wai wela. I ke kaʻina o ka mālama ʻana a me ka lawe ʻana, pono e hana ʻia nā hana pale ahi a me ka pahū e pale aku i ka pili ʻana me nā lapalapa ākea a me nā wela kiʻekiʻe. E hoʻohana i nā mea pale kūpono e like me nā mīkina lima, nā maka aniani, a me nā lole pahū i ka wā e hoʻohana ai a lawelawe ai i ka cyclopentadiene. I ka manawa like, pono e mālama ʻia e pale aku i ka hoʻopili ʻana me ka ʻili a me ka inhalation o kona mau mahu, i ʻole e hoʻonāukiuki a make. I ka hopena o ka leak ulia, ʻoki koke i ke kumu o ka leak a hoʻomaʻemaʻe me nā mea hoʻoheheʻe kūpono. I ka hana ʻenehana, pono e mālama ʻia nā kaʻina hana palekana kūpono a me nā ana e hōʻoia ai i ka palekana o ka hana.


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