유기공업화학실험 유지의 산가 및 비누화가 측정 결과보고서

소개

"유기공업화학실험 유지의 산가 및 비누화가 측정 결과보고서"에 대한 내용입니다.

목차

요약························································ⅰ

Abstract···················································ⅱ

1. 서론·····················································1

2. 이론
2.1. 유지 (oil and fats)··································1
2.2. 산가 (AV, acid value)·······························2
2.3. 비누화가 (SV, saponification value)·················2
2.4. 적정 (titration)······································2

3. 실험 장치와 사용 시약
3.1. 실험 장치···········································3
3.2. 사용 시약···········································5
4. 실험 방법···············································5
4.1. 산가 측정 방법······································6
4.2. 비누화가 측정 방법··································7

5. 실험 결과 및 고찰
5.1. 유지의 산가··········································7
5.2. 유지의 비누화가·····································8
5.3. 측정의 오차··········································8
5.4. 일반적인 유지의 산가와 비누화가····················8

6. 결론·····················································8

7. 참고문헌················································9

본문내용

요약

본 실험은 산가와 비누화가의 측정방법을 습득함으로써 지방산의 양에 따른 품질 시험법을 숙지하고자 함에 중점을 두고 있다. 산가 측정은 에틸에테르와 에탄올을 1:1 비율로 섞은 용액을 페놀프탈레인과 0.01 N-KOH 용액으로 중화한 뒤 60 ml를 넣어 용제를 녹였다. 그 후 페놀프탈레인 용액을 2방울을 넣은 뒤 0.1 N-KOH 에탄올 용액으로 적정하였고 붉은색이 30초 동안 유지되었던 때를 종말점으로 하였다. 이 과정을 4번 반복하여 사용된 0.1 N-KOH의 양을 측정하여 산가를 구하였다. 비누화가 측정은 유지 4 g을 플라스크에 넣은 뒤 0.5 N-KOH 에탄올 용액 50 ml를 가한 뒤 80 ℃에서 교반과 가열을 30분간 지속하였다. 가열이 끝난 후 페놀프탈레인 용액 2방울을 떨어뜨린 후 0.5 N-HCl 용액을 이용하여 가열되었던 유지를 중화적정 한 뒤 비누화가를 계산하였다. 산가를 측정한 결과 1, 2회 실험은 중화에 사용된 0.1 N-KOH 에탄올 용액이 14.7 ml, 19.4 ml이고 산가가 각각 8.247, 10.916이었다. 값의 차이가 큰 이유를 유지의 조성이 다르다고 판단하여 3, 4회 실험은 같은 한 번에 시료를 채취하여 측정한 결과 중화에 사용된 0.1 N-KOH 에탄올 용액이 17.5 , 17.2 이고 산가는 9.625, 9.610로 평균 9.618이었다. 비누화가를 측정한 결과 비누화에 사용된 0.5 N-KOH 에탄올 용액의 양은 31.6 ml이었고, 비누화가는 221.60이었다.

Abstract

In this study, measurement of acid value and saponification value according to the amount of fatty acids by learning how to test the quality is focused as you want to read.

참고자료

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