ksgj2020.com-亚洲一级淫片,亚洲电影一区二区,久久av资源,欧美中文字幕

 

high quality bdma / 103-83-3 / benzyldimethylamine / n,n-dimthylbenzylamine

2019-07-02by admin

bdma

molecular formula: c9h13n;

relative molecular mass: 135.20;

cas number: 103-83-3;

colorless to slightly yellow transparent liquid, soluble in ethanol, soluble in hot water, slightly soluble in cold water;

purity ≥99%;

moisture ≤ 0.5%;

viscosity (25 ° c): 90 mpa.s;

density (25 ° c): 0.897 g / cm 3;

freezing point: -75 ° c;

boiling range: 178-184 ° c;

refractive index (25 ° c): 1.5011;

flash point (tcc): 54 ° c;

steam pressure (20 ° c): 200pa

n-dimthylbenzylamine

one. the main use of bdma

bdma is a catalyst for polyester polyurethane block soft foam, polyurethane rigid foam, polyurethane sheet and adhesive coating in polyurethane industry. it is mainly used for hard foam, which can make polyurethane foam have good pre-flowability and uniform cells. good adhesion between the foam and the substrate;

in the field of organic synthesis, bdma is mainly used as a catalyst for synthesizing dehydrohalogen in organic drugs, a corrosion inhibitor, an acidic neutralizer, an accelerator for electron microscopy slicing, and the like;

bdma is also used to synthesize quaternary ammonium salts to produce cationic surface active strong fungicides;

bdma is mainly used to promote curing systems such as anhydrides, polyamides, and fatty amines, and accelerates product curing. it is widely used in epoxy resin electronic potting materials, encapsulating materials, epoxy floor coatings, and marine paints. used as a curing accelerator;

specific application examples of bdma include: carbon fiber/single molecule epoxy resin matrix composite laminate, epoxy substrate electrophoretic coating, dry transformer potting;

company?name: ? newtop?chemical?materials?(shanghai)?co.,?ltd.
sales?manager: ? hunter
e_mail: ? ?sales@newtopchem.com
telephone: ? 86-152 2121 6908
fax: ? 86-021-5657?7830
address: ? rm.?1104,?no.?258,?songxing?west?road,
baoshan?district,?shanghai,?china?(mainland)
website: ? www.ksgj2020.com
website?on?alibaba: ? pucatalyst.en.alibaba.com

pu catalyst: bdma?(benzyldimethylamine)?cas:103-83-3

1 (1)

over view:

common name: benzyl dimethyl amine

other chemical names: n,n-dimethylbenzylamine, benzenemethamine, n,n-dimethyl-;benzenemethanamine,n,n-dimethyl-;benzylamine,

 

physical and chemical properties:

appearance form: transprant light yellow ?liquid
odour no data available
ph 10 at 10 g/l at 20 °c
melting point/freezing?point melting point/range: -75 °c – lit.
initial boiling point and?boiling range 181?–?184?°c?at?1.020?hpa?–?lit.
flash point 53 °c – closed cup
evaporation rate no data available
flammability (solid, gas) upper?explosion?limit:?6,3?%(v)
upper/lower?flammability

or?explosive limits

lower?explosion?limit:?0,9?%(v)
relative density 0,9 g/cm3 at 25 °c
water solubility soluble
partition coefficient: noctanol/water log pow: 1,87
molar formular c9h13n
molar mass 135.21

 

features and uses:

a liquid tertiary amine catalyst. can improve foam cure and demolding time. it is an excellent candidate to consider for use in water-nco reaction in rigid polyurethane foams.

bdma is typically suitable to replace dmcha in formulations using a high level of water as blowing or co-blowing agent can reduce surface friability and improve adhesion of foam to substrates.

bdma promotes the urethane reaction and is commonly used in high-water rigid foam applications to reduce friability. it has a characteristic but low amine odor, and is soluble in water and in most organic solvents.

bdma?is used in flexible slabstock and rigid foam applications.

it promotes the urethane reaction and is commonly used in high-water rigid foam applications to reduce friability.

bdma is also used for flexible slabstock foam applications.

storage information?

recommends that our catalysts be stored in a dry and cool area under appropriate ventilation conditions. each container should be closed tightly to avoid contamination with moisture or other negative influences that could change the products’ performance in the end use.

 

package:

180kg/steel drum

(dabco bdma/niax bdma/ pc cat np60/ addocat db/ jeffcat bdma/ lupragen n103)

admin

ksgj2020.com-亚洲一级淫片,亚洲电影一区二区,久久av资源,欧美中文字幕
国产精品素人视频| 五月激情综合婷婷| 亚洲国产精品尤物yw在线观看| 精品一区二区在线看| 色婷婷综合久久| 国产亚洲一区字幕| 欧美aⅴ一区二区三区视频| 色综合天天综合网天天狠天天| 久久久美女艺术照精彩视频福利播放| 亚洲电影第三页| 99精品欧美一区| 久久综合九色欧美综合狠狠| 婷婷成人综合网| 色狠狠av一区二区三区| 国产精品欧美一区喷水| 精品一区二区三区不卡| 6080yy午夜一二三区久久| 亚洲乱码精品一二三四区日韩在线| 国v精品久久久网| 精品国产露脸精彩对白| 日本亚洲欧美天堂免费| 欧美日韩综合在线| 亚洲欧美激情一区二区| 不卡高清视频专区| 国产欧美日韩在线| 国产精品资源在线看| 精品捆绑美女sm三区| 奇米亚洲午夜久久精品| 欧美日韩激情一区| 亚洲图片欧美一区| 91成人免费在线视频| 亚洲天堂网中文字| 99精品视频在线观看免费| 国产精品麻豆欧美日韩ww| 国产成人精品亚洲午夜麻豆| 久久亚洲私人国产精品va媚药| 精品亚洲国内自在自线福利| 日韩精品一区二区在线| 麻豆国产精品官网| 欧美不卡视频一区| 精品一区二区三区蜜桃| 久久一区二区三区国产精品| 国产精品一区二区黑丝| 久久久久久久综合狠狠综合| 国产一区二区三区四| 久久久久久久电影| 国产高清不卡二三区| 国产日韩欧美不卡| 粉嫩绯色av一区二区在线观看| 欧美国产综合一区二区| 成人免费视频一区| 国产精品伦理一区二区| 99视频有精品| 一区二区三区在线观看动漫| 欧美中文字幕一区二区三区| 亚洲一区二区精品视频| 欧美乱妇20p| 麻豆中文一区二区| 久久综合久久综合久久| 福利视频网站一区二区三区| 国产精品久久国产精麻豆99网站| 99久久99久久免费精品蜜臀| 亚洲精品国产第一综合99久久| 91成人免费在线视频| 视频一区二区欧美| 欧美精品一区二区三区四区 | 97久久超碰国产精品| 亚洲视频狠狠干| 欧美日韩日本视频| 麻豆一区二区三| 国产欧美日本一区二区三区| av在线不卡网| 亚洲线精品一区二区三区| 91精品国产乱码| 国产麻豆精品95视频| 亚洲日本va午夜在线影院| 欧美日韩国产三级| 六月丁香综合在线视频| 国产亲近乱来精品视频| 一本久久a久久免费精品不卡| 亚洲成av人片| 久久久久久久一区| 色久优优欧美色久优优| 美女视频黄免费的久久| 国产精品人成在线观看免费| 欧美日韩一区二区三区高清| 国产专区综合网| 亚洲美腿欧美偷拍| 日韩免费性生活视频播放| 不卡的av在线播放| 亚洲国产综合91精品麻豆| 精品欧美久久久| 91麻豆国产在线观看| 免费成人av在线| 1024精品合集| 欧美一区二区日韩一区二区| 高清国产一区二区| 天天操天天干天天综合网| 久久精品男人的天堂| 欧美丝袜自拍制服另类| 国产一区二区视频在线播放| 樱桃国产成人精品视频| 精品日韩一区二区| 在线观看国产精品网站| 国产伦精品一区二区三区在线观看| 亚洲欧美日韩国产另类专区| 欧美va亚洲va在线观看蝴蝶网| 97精品视频在线观看自产线路二| 麻豆91精品视频| 亚洲另类在线一区| 久久色中文字幕| 欧美天堂一区二区三区| 国产传媒一区在线| 婷婷综合久久一区二区三区| 中文字幕精品一区二区精品绿巨人 | 成人性生交大片| 日韩国产欧美在线观看| 亚洲视频一二三| 久久亚洲一级片| 9191成人精品久久| 91蝌蚪porny成人天涯| 国产一区二区三区精品视频| 亚洲国产综合人成综合网站| 欧美国产日韩精品免费观看| 欧美一区二区女人| 在线观看成人免费视频| 成人av在线一区二区三区| 蜜桃视频在线观看一区| 一区二区高清在线| 国产精品免费久久| 欧美va亚洲va香蕉在线| 欧美男人的天堂一二区| 91香蕉视频黄| 国产精品亚洲一区二区三区在线| 日本一区中文字幕 | 日本福利一区二区| 国产成人在线电影| 另类小说欧美激情| 午夜精品影院在线观看| 亚洲精品五月天| 国产精品欧美一级免费| 久久久三级国产网站| 日韩欧美在线影院| 欧美日韩你懂得| 91成人网在线| 色综合久久九月婷婷色综合| caoporn国产精品| 国产精品99久| 国产一区999| 久久精品国产精品亚洲红杏| 日韩中文字幕不卡| 亚洲mv大片欧洲mv大片精品| 玉米视频成人免费看| 亚洲人一二三区| 亚洲免费资源在线播放| 中文字幕亚洲在| 国产精品久久久久久久久免费相片 | 欧美人妇做爰xxxⅹ性高电影| 色综合久久久久久久久久久| 91色乱码一区二区三区| 99久久99久久精品国产片果冻| 成人晚上爱看视频| 国产v日产∨综合v精品视频| 国产麻豆视频精品| 激情综合网av| 久久精品国产亚洲5555| 麻豆91在线看| 精品综合久久久久久8888| 久久国产精品72免费观看| 蜜臀精品久久久久久蜜臀 | 欧美伊人久久久久久久久影院 | 91精品国产综合久久婷婷香蕉| 欧美日韩在线直播| 欧美日韩亚洲综合一区二区三区 | 一区二区三区免费在线观看| 亚洲精品视频在线| 亚洲国产乱码最新视频 | 欧美性一二三区| 欧美影片第一页| 欧美老女人第四色| 在线综合视频播放| 日韩精品中午字幕| 久久青草国产手机看片福利盒子 | 成人免费视频网站在线观看| 成人av网在线| 色噜噜狠狠成人网p站| 欧美在线观看一二区| 欧美日韩三级一区二区| 91精品国产乱| 精品动漫一区二区三区在线观看| 久久久蜜桃精品| 综合久久综合久久| 亚洲国产一区二区视频| 奇米色一区二区| 国产精品18久久久久久久久| gogogo免费视频观看亚洲一| 色婷婷精品大视频在线蜜桃视频 | 一区二区三区中文字幕精品精品| 亚洲国产精品一区二区www在线| 日韩精品一二三|