ʻIke pū ʻia ʻo dimethyl tiphenylamine, ʻaʻole waihoʻoluʻu i ka wai ʻaila melemele māmā, me kahi ʻala ʻala, maʻalahi ke hoʻoheheʻe ʻia i ka lewa a i ʻole ma lalo o ka lā a hoʻohana i ka ze pōʻeleʻele.ʻAno pili (20℃/ 4℃) 0.9555, kiko hau 2.0℃, wahi paila 193℃, wahi uila (wehe) 77℃, kiko uila 317℃, viscosity (25℃) 1.528mpa-s, kuhikuhipuʻuone refractive (n20D) 1.5584.Hiki ke hoʻoheheʻe ʻia i loko o ka ethanol, ether, chloroform, benzene a me nā mea hoʻoheheʻe kūlohelohe ʻē aʻe.Hiki ke hoʻoheheʻe ʻia i loko o nā ʻano mea like ʻole.Hiki ke hoʻoheheʻe ʻia i ka wai.He combupaʻa a e ʻā inā he lapalapa e hāmama ana.ʻO ka mahu a me ka ea e hana i kahi hui pahū me ka palena pahū o 1.2% ~ 7.0% (vol).He mea ʻawaʻawa loa ia, a hoʻokuʻu ʻia ke kinoea aniline ʻona e ka decomposition ikehu wela.Hiki ke komo i loko o ka ʻili a me ka make ʻana, LD501410mg/kg, ʻo ka nui o ka ʻae ʻia i ka ea he 5mg/m3.

Ke ala mālama

1. Mālama ʻia i ka mālama ʻana[25] E kūʻai i loko o kahi hale kūʻai anuanu a maikaʻi.E mālama i ke ahi a me nā kumu wela.E hoʻopaʻa i ka pahu.Pono e mālama ʻokoʻa ʻia mai nā waikawa, nā halogens, a me nā kemika hiki ke ʻai, ʻaʻole i hui pū ʻia.Hoʻolako ʻia me nā ʻano like ʻole a me ka nui o nā lako hana ahi.Pono e hoʻolako ʻia ka wahi e mālama ai me nā lako lapaʻau ulia pōpilikia no nā leaks a me nā lako hale kūpono.

2. E hoʻokomo i ka pahu hao i hoʻopaʻa ʻia i ka paʻi ʻana, 180kg no ka pahu, a waiho ma kahi anuanu a me ka makani.E mālama a lawe ʻia e like me nā lula o nā mea hiki ke hoʻopau ʻia.

ʻano hana synthesis

1. Loaʻa ia ma ka hopena ma waena o ka aniline a me ka methanol i ke alo o ka sulfuric acid ma ke kiʻekiʻe wela a me ke kaomi kiʻekiʻe.Kaʻina hana:1.790kg aniline, 625kg o ka methanol, 85kg o ka sulfuric acid (ammonium 100%) i hoʻohui ʻia i loko o ka ipu hoʻonā, hoʻomalu i ka mahana 210-215℃, kaomi 3.1MPa, hana no 4h, a laila hoʻokuʻu i ke kaomi, hoʻokuʻu ʻia ka mea i ka mea hoʻokaʻawale, hoʻokaʻawale ʻia e 30% sodium hydroxide, static, a hoʻokaʻawale ʻia ka paʻakai ammonium quaternary haʻahaʻa.A laila ma 160℃, 0.7-0.9MPa hydrolysis pane no 3h, nā huahana hydrolysis a me ka papa luna o nā mea aila i hui pū ʻia e ka holoi ʻana ma hope o ka hoʻoheheʻe ʻana o ka mea i hoʻopau ʻia.

2. Ke hoʻohana nei i ka methanol a me ka aniline e like me nā mea maka, ua synthesized ia e ka alumina catalyst ma lalo o ke kūlana o 200-250℃me ka nui o ka methanol a me ka lewa.ʻO ka nui o ka hoʻohana ʻana i nā mea maka: aniline 790kg/t, methanol 625kg/t, sulfuric acid 85kg/t.Hiki i ka hoʻomākaukau keʻena ke hoʻololi i ka aniline me ka trimethyl phosphate.

3. hui ʻia ka aniline a me ka methanol (n aniline: n methanol≈1:3), a ma o ka reciprocating non-pulse ana pauma injected ma 0.5h-1 ea wikiwiki i loko o ka reactor lako me ka catalyst, ka hopena outflow mua i loko o ke aniani kinoea-wai separator, ka separator ma lalo o ka wai i hōʻiliʻili ʻia i nā manawa maʻamau i wehe ʻia no ka nānā ʻana chromatographic.

I ka makahiki 2001, ua hoʻomohala pū ʻo Nankai University a me Tianjin Ruikai Technology Development Co., Ltd. i kahi mea hoʻoheheʻe methylation aniline maikaʻi loa, a ʻike i ke kinoea-phase synthesis o N,N-dimethyl aniline.Penei ke kaʻina hana: Ua hui pū ʻia ka aniline wai me ka methanol, ua hoʻoheheʻe ʻia i loko o ka hale kiaʻi vaporization, a laila komo i loko o kahi reactor tubular me ka wikiwiki o ka ea o 0.5-1.0h-1 (ua hoʻolako ʻia ka moena paʻa o ka tubular reactor me ka nano loaded. -solid catalyst), a hana mau ʻia ma 250-300℃under ke kaomi lewa, me ka hua DMA ma luna o 96%.

ʻO ke ala hoʻomaʻemaʻe: Loaʻa pinepine nā mea haumia e like me aniline a me N-methyl aniline.Hoʻoheheʻe ʻia ʻo N,N-dimethylaniline i ka 40% sulfuric acid a hoʻoheheʻe ʻia e ka mahu wai.Hoʻohui ʻia ka sodium hydroxide e hana i ka alkaline.Hoʻomau ʻia ka distillation me ka mahu wai.Hoʻokaʻawale ʻia ka distillate i nā papa wai a maloʻo me ka potassium hydroxide.Hoʻokō ʻia ka distillation kaomi maʻamau i mua o ka acetic anhydride.Holoi ʻia ka distillate me ka wai e wehe i nā ʻāpana o ka acetic anhydride, hoʻomaloʻo ʻia me ka potassium hydroxide, a ukali ʻia e ka barium oxide, a hoʻoheheʻe ʻia ma lalo o ke kaomi hoʻemi i mua o kahi kahawai o ka nitrogen.ʻO nā ʻano ʻē aʻe o ka hoʻomaʻemaʻe ʻana i ka distillate me ka hoʻohui ʻana i ka 10% acetic anhydride a me ka refluxing no kekahi mau hola e hoʻoneʻe i nā amine mua a me ka lua.Ma hope o ka hoʻomaha ʻana, hoʻohui ʻia kahi ʻoi aku o 20% hydrochloric acid a lawe ʻia me ka ether.ʻO ka papa waika hydrochloric he alkaline me ka alkali a laila unuhi ʻia me ka ether, a maloʻo ka papa ether me ka potassium hydroxide a hoʻoheheʻe ʻia ma lalo o ke kaomi hoʻemi ʻia ma lalo o ke kahawai o ka nitrogen.Hiki ke hoʻololi ʻia ka N,N-dimethylaniline i nā paʻakai ʻakika picric, hoʻihoʻi hou ʻia i kahi helu hoʻoheheʻe mau a laila decomposed me kahi wai mahana 10% wai o ka sodium hydroxide.A laila unuhi ʻia me ka etera, holoi ʻia a maloʻo, a hoʻoheheʻe ʻia ma lalo o ke kaomi hoʻemi ʻia.

5. Aniline, methanol a me ka sulfuric acid i hui pū ʻia, condensation reaction i ka autoclave, nā huahana hopena e ka hoʻihoʻi hou ʻana o ka methanol, hoʻohui i ka neutralization alkali, ka hoʻokaʻawale ʻana a laila distillation ma ka hoʻemi ʻana i ke kaomi e loaʻa ai ka huahana.

6. N, N-dimethylaniline hiki ke hanaia e ka methylation reaction o aniline a me trimethyl phosphate, a laila unuhiia e ka etera, maloo a me ka distilled.

7. N, N-dimethylaniline hiki ke synthesized ma ka moena catalytic o Ziegler catalyst ma ka copper-manganese system a i ole copper-zinc-chromium system ma 280℃me ka hui ʻana o ka aniline a me ka methanol ma ka ratio o 1:3.5.Ua hōʻiliʻili ʻia ka N, N-dimethylaniline i loaʻa ma 193-195℃ma kahi mea hoʻoheheʻe kolamu 54-papa a hoʻopaʻa ʻia i loko o nā ʻōmole aniani ʻeleʻele.No ka hoʻomākaukau ʻana i ka N,N-dimethylaniline maʻemaʻe, hiki ke hoʻokomo ʻia ka N,N-dimethylaniline me ke kinoea nitrogen e like me ke kinoea lawe i loko o ka chromatograph kinoea hoʻomākaukau.ch he kolamu phosphate metala.

ʻO ka noi nui

1. ʻO ia kekahi o nā mea waiwai kumu no ka hana ʻana i nā mea hoʻoheheʻe paʻakai (triphenylmethane dyestuff, etc.) a me ka wai wai alkali.2. Hoʻohana ʻia e like me ka solvent, metala preservative, curing agent no ka epoxy resin, curing accelerant no polyester resin, co-catalyst no ka polymerization o nā pūhui ethylene, etc. Hoʻohana ʻia ia no ka hoʻomākaukau ʻana i nā dyes alkaline triphenylmethane, azo dyes a me vanillin, etc. 3. Hoʻohana pū ʻia ia i ka hoʻomākaukau ʻana i nā dyes alkaline triphenylmethane, nā dyes azo a me ka vanillin, a me nā mea ʻē aʻe.Hoʻohana ʻia ia ma ke ʻano he catalyst i ka hana ʻana i ka polyurethane foam a ma ke ʻano he mea maka no ka mea hoʻolaha vulcanization rubber, explosives a me nā lāʻau lapaʻau.Hoʻohana ʻia ka N,N-Dimethylaniline i ka ʻoihana lāʻau lapaʻau e hana i ka cephalosporin V, sulfamethoxine N-methoxypyrimidine, sulfamethoxine o-dimethoxypyrimidine, fluorosporine, etc.4. Hoʻohana ʻia e like me ka mea hoʻomaʻamaʻa hoʻōla no ka epoxy resin, polyester resin a me anaerobic glue, i paʻa koke ke kāpili anaerobic.Hiki ke hoʻohana ʻia e like me ka solvent, ka co-catalyst no ka polymerization o nā pūhui ethylene, ka mea mālama metala, ka ultraviolet absorber no nā mea hoʻonaninani, photosensitizer, a me nā mea ʻē aʻe. hoʻopuehu waiʻona, waiʻakika waiʻala, aila-soluble dyes a me nā meaʻala (vanillin), a me nā mea ʻē aʻe. hoʻohana ʻia ma ke ʻano he reagent no ka hoʻoholo photometric o ka nitrite.Hoʻohana pū ʻia e like me ka solvent, a hoʻohana ʻia i ka synthesis organik.6.Hoʻohana ʻia e like me nā intermediates dye, solvents, stabilizers, analytical reagents.[26]