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2-Methylsuccinic acid

2-Methylsuccinic acid 구조식 이미지
카스 번호:
498-21-5
상품명:
2-Methylsuccinic acid
동의어(영문):
Nsc5276;PYROTARTARIC ACID;Methyl-Butanediolc;METHYLSUCCINIC ACID;2-Methylsuccinic aci;2-Methylsuccinic acid;methyl-butanedioicaci;methyl-Butanedioicacid;Succinic acid, methyl-;Methylbutanedioic acid
CBNumber:
CB9384875
분자식:
C5H8O4
포뮬러 무게:
132.11
MOL 파일:
498-21-5.mol

2-Methylsuccinic acid 속성

녹는점
110-115 °C(lit.)
끓는 점
164.01°C (rough estimate)
알파
[α]D20 -1~+1° (c=5, C2H5OH)
밀도
1.0951 (rough estimate)
굴절률
1.4240 (estimate)
산도 계수 (pKa)
4.13(at 25℃)
수용성
Soluble in water.
BRN
1722946
안정성
Stable. Combustible. Incompatible with bases, oxidizing agents, reducing agents.
CAS 데이터베이스
498-21-5(CAS DataBase Reference)
NIST
Butanedioic acid, methyl-(498-21-5)
EPA
Butanedioic acid, methyl-(498-21-5)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xi
위험 카페고리 넘버 36/37/38
안전지침서 26-36
WGK 독일 3
TSCA Yes
HS 번호 29171900
그림문자(GHS):
신호 어: Warning
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H315 피부에 자극을 일으킴 피부부식성 또는 자극성물질 구분 2 경고 P264, P280, P302+P352, P321,P332+P313, P362
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 P264, P280, P305+P351+P338,P337+P313P
H335 호흡 자극성을 일으킬 수 있음 특정 표적장기 독성 - 1회 노출;호흡기계 자극 구분 3 경고
예방조치문구:
P261 분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.
P304+P340 흡입하면 신선한 공기가 있는 곳으로 옮기고 호흡하기 쉬운 자세로 안정을 취하시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P405 밀봉하여 저장하시오.

2-Methylsuccinic acid MSDS


2-Methylsuccinic acid

2-Methylsuccinic acid C화학적 특성, 용도, 생산

화학적 성질

white to beige crystalline powder

용도

Organic synthesis.

일반 설명

White or yellowish crystals or beige powder.

공기와 물의 반응

Water soluble.

반응 프로필

Carboxylic acids, such as 2-Methylsuccinic acid, donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in 2-Methylsuccinic acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions.

건강위험

ACUTE/CHRONIC HAZARDS: 2-Methylsuccinic acid may be harmful by inhalation, ingestion or skin absorption. When heated to decomposition it emits toxic fumes of carbon monoxide and carbon dioxide.

화재위험

Flash point data for 2-Methylsuccinic acid are not available; however, 2-Methylsuccinic acid is probably combustible.

Purification Methods

Crystallise the acid from water. [Beilstein 2 IV 1948.]

2-Methylsuccinic acid 준비 용품 및 원자재

원자재

준비 용품


2-Methylsuccinic acid 공급 업체

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