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xzliucheng
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dfq0730(½ð±Ò+2,VIP+0):thanks 12-16 20:08
417316039(½ð±Ò+3,VIP+0):лл»Ø¸´ 12-20 20:37
dfq0730(½ð±Ò+2,VIP+0):thanks 12-16 20:08
417316039(½ð±Ò+3,VIP+0):лл»Ø¸´ 12-20 20:37
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ÕâÊÇBASF¹«Ë¾µÄ²úÆ·£¬ÊDZíÃæ»îÐÔ¼Á¡£ ÄãÓÃCAS# 9003-11-6È¥GoogleËÑһϡ£ Specifications Color, APHA¡¡¡¡¡¡¡¡¡¡¡¡¡.. 120 max. Water, weight %¡¡¡¡¡¡¡¡¡¡¡¡ 0.4 max. pH (2.5% aqueous)¡¡¡¡¡¡¡¡¡¡.. 6.0 − 7.4 Cloud point (10% aqueous)¡¡¡¡¡¡¡ 85 − 91¡ãC Typical physical properties Form¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ Paste Average molecular weight¡¡¡¡¡¡¡... 5750 Specific gravity, 60¡ã/25¡ãC¡¡¡¡¡¡¡¡ 1.01 Viscosity, cps at 60¡ãC ¡¡¡¡¡¡¡¡¡ 350 Pour point¡¡¡¡¡¡¡¡¡¡¡¡¡¡.. 31¡ãC Cloud point (1% aqueous)¡¡¡¡¡¡¡.. 90¡ãC Foam height (Ross Miles, 0.1% aqueous at 50¡ãC)¡¡¡¡¡¡¡¡¡¡¡¡¡¡. 45 mm Surface tension (0.1% aqueous)¡¡¡¡¡ 34 dynes/cm at 25¡ãC HLB¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡. 7 − 12 Solubility in water at 25¡ãC¡¡¡¡¡¡¡¡ >10% Wetting, Draves Sink Time (3-gm hook, 0.1% aqueous at 25¡ãC)¡¡ 35 seconds Pluronic P-123 (BASF code) is a triblock copolymer, with a formula of HO(CH2CH2O)20(CH2CH(CH3)O)70(CH2CH2O)20H. It has around 5800 Da weight and sold in Aldrich as Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (PEO-PPO0-PEO). Its behavior is similar to that of hydrocarbon surfactants, and will form micelles when placed in a selective solvent such as water. It is capable of forming both spherical and cylindrical micelles ¼ÃÄÏΰ¶¼»¯¹¤ÓÐÏÞ¹«Ë¾ ÓÐÊÛ£¿ [ Last edited by xzliucheng on 2009-12-16 at 15:23 ] |

2Â¥2009-12-16 15:17:11

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