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fanxiaojuan

½ð³æ (СÓÐÃûÆø)

[ÇóÖú] DNSÊÔ¼ÁÅäÖÆ3,5-¶þÏõ»ùË®ÑîËá²»ÈܽâÔõô°ì£¿

3,5-¶þÏõ»ùË®ÑîËá²»Èܽ⣬ÓÐÈË˵¼ÓË®ÑîËáºÍÇâÑõ»¯ÄƵļä¸ôʱ¼äÒª¶ÌÒÔÃâ³Áµí£¬ÉõÖÁ¿ÉÒÔÏȼÓÇâÑõ»¯ÄÆ£¬Ò²ÓÐ˵·¨ÇâÑõ»¯ÄƱØÐëºó¼ÓÒÔÃâ³Áµí£¬µ«ÎÒÁ½ÖÖ·½·¨¶¼ÊÔ¹ý£¬»¹ÊDz»Èܽ⣬Ôõô°ì£¿
     ²ÉÓÃÒÔÏÂÅä·½£º³ÆÈ¡¾ÆÊ¯Ëá¼ØÄÆ182.0g£¬ÈÜÓÚ500mLÕôÁóË®ÖУ¬¼ÓÈÈ£¨²»³¬¹ý50¡æ£©£¬ÓÚÈÈÈÜÒºÖÐÒÀ´Î¼ÓÈë3£¬5-¶þÏõ»ùË®ÑîËá6.3g£¬NaOH 21.0g£¬±½·Ó5.0g£¬ÎÞË®ÑÇÁòËáÄÆ5.0g£¬½Á°èÖÁÈܽâÍêÈ«£¬ÀäÈ´ºóÓÃÕôÁóË®¶¨ÈÝÖÁ1000mL£¬Öü´æÓÚ×ØÉ«Æ¿ÖУ¬ÊÒα£´æ¡£
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charon1982

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Сµ¤Ä¾Ä¾: ½ð±Ò+2, ¹ÄÀøÓ¦Öú 2012-04-17 13:47:13
fanxiaojuan: ½ð±Ò+1, ¡ïÓаïÖú, ллŶ£¬µ«ÅäÖÆÎ¶Ȳ»ÊDz»Ò˳¬¹ý50¡æÂ𣿠2012-04-22 21:07:10
Preparation of DNS (Dinitrosalycyclic Acid) solution
Different ingredients used for the preparation of DNS solution are as
follows:
1). Distilled water 1416 ml
2). 3.5 Dinitrosalycyclic Acid 10.6 g
3). NaOH 19.5 g
The above ingredients were dissolved gently in water bath at 80¡ãC until a clear solution
was obtained. Then the following chemicals were added.
4). Rochelle salt (sodium potassium tartrate) 300g
5). Phenol (melted at 60¡ãC) 7.5 ml
6). Sodium meta bisulphate 8.3g
After dissolving the above ingredients, the solution was filtered through a large coarse sintered glass filter and stored at room temperature in an amber colored bottle to avoid photo oxidation.
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5Â¥2012-04-17 13:30:16
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fanxiaojuan

½ð³æ (СÓÐÃûÆø)

лл£¬µ«ºÃÏñûÎÒÓöµ½µÄ²»ÈܽâÎÊÌâ¡£¡£¡£
2Â¥2012-04-16 15:33:09
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
ÒýÓûØÌû:
2Â¥: Originally posted by fanxiaojuan at 2012-04-16 15:33:09:
лл£¬µ«ºÃÏñûÎÒÓöµ½µÄ²»ÈܽâÎÊÌâ¡£¡£¡£

3Â¥2012-04-16 21:16:38
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

youngaza

ľ³æ (СÓÐÃûÆø)

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fanxiaojuan: ½ð±Ò+1, ζȲ»ÊDz»Ò˳¬¹ý50ÉãÊ϶ÈÂð 2012-04-22 21:15:49
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4Â¥2012-04-16 21:27:43
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