亚洲成人三区,一级毛片久久久,国产精品密蕾丝视频下载,欧美成人国产va精品日本一级

 

Pentamethyldiethylenetriamine

English name: N, N, N’, N”, N”-Pentamethyldiethylenetriamine
Molecular formula: C9H23N3
Molecular weight: 173.3
NEWTOP2

Physical and chemical properties
Pentamethyldiethylenetriamine is a colorless to pale yellow clear liquid that is readily soluble in water.
Purity: 98.0%
Viscosity (25 ° C): 2mPa.s
Relative density (20 ° C): 0.8302-0.8306
Flash point (closed loop): around 72 °C
Flash point (PMCC): 83.3 ° C
Boiling range: 196-201 ° C or 70-80 ° C (1100 Pa)
Steam pressure (21 ° C): 0.29 * 133pa
Freezing point: <-20 °C

System of law
Pentamethyldiethylenetriamine is generally obtained by N-methylation of diethylenetriamine as a raw material, and the methylation method includes a formic acid/formaldehyde method, a formaldehyde hydrogenation method, and the like.

Characteristics and uses
Pentamethyldiethylenetriamine is a highly reactive, strong foaming polyurethane catalyst that can also be used to balance overall foaming and gelling reactions. It is widely used in a variety of polyurethane rigid foams, including polyisocyanuric acid sheet hard foam, can also improve foam fluidity, thus improving product production processes and improving product quality. Pentamethyldiethylenetriamine can also be used alone as a catalyst for polyurethane foam formulations, or with other catalysts such as DNSHA. When used alone as a hard foam catalyst, the amount is in the range of 1.0 to 2.0 parts by mass per 100 parts by mass of the polyol. In addition to its use in hard foam formulations, pentamethyldiethylenetriamine can also be used in the production of polystyrene blister foams and molded foams.

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.mimgu.com
Website?on?alibaba: pucatalyst.en.alibaba.com

admin

主站蜘蛛池模板: 仙游县| 新兴县| 淮南市| 肃北| 武夷山市| 太和县| 莱西市| 阜南县| 武平县| 新平| 平顺县| 洱源县| 泗水县| 喀喇沁旗| 军事| 兰坪| 深圳市| 海晏县| 盈江县| 江达县| 衢州市| 松江区| 香河县| 秀山| 穆棱市| 舒城县| 吉木萨尔县| 孟津县| 罗源县| 新平| 渭南市| 法库县| 衡水市| 偃师市| 珠海市| 本溪市| 镇江市| 石景山区| 封丘县| 莱西市| 浮梁县|