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Dimethyl dicarbonate

Dimethyl dicarbonate 구조식 이미지
카스 번호:
4525-33-1
상품명:
Dimethyl dicarbonate
동의어(영문):
velcorin;4525-33-1;methylpyrocarbonate;DIMETHYL DICARBONATE;DIMETHYL PYROCARBONATE;DimethylDicarbonate(Dmdc);oxydi-formicacidimethylester;DICARBONIC ACID DIMETHYL ESTER;DIMETHYL DICARBONATE USP/EP/BP;PYROCARBONIC ACID DIMETHYL ESTER
CBNumber:
CB9496174
분자식:
C4H6O5
포뮬러 무게:
134.09
MOL 파일:
4525-33-1.mol

Dimethyl dicarbonate 속성

녹는점
15-17°C
끓는 점
45-46 °C5 mm Hg(lit.)
밀도
1.25 g/mL at 25 °C(lit.)
증기압
0.7 hPa (20 °C)
굴절률
n20/D 1.392(lit.)
인화점
80 °C
저장 조건
Store below +30°C.
용해도
35g/l (decomposition)
폭발한계
3-29.9%(V)
BRN
956715
EPA
Dicarbonic acid, dimethyl ester (4525-33-1)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 T
위험 카페고리 넘버 21/22-23-34
안전지침서 18-26-28-36/37/39-38-45
유엔번호(UN No.) UN 2927 6.1/PG 2
WGK 독일 3
RTECS 번호 HT0362500
F 고인화성물질 9-21
자연 발화 온도 465 °C
HS 번호 2920 90 10
위험 등급 6.1(a)
포장분류 II
유해 물질 데이터 4525-33-1(Hazardous Substances Data)
독성 LD50 orally in Rabbit: 335 mg/kg LD50 dermal Rat > 1250 mg/kg
기존화학 물질 KE-10020
그림문자(GHS):
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H314 피부에 심한 화상과 눈에 손상을 일으킴 피부부식성 또는 자극성물질 구분 1A, B, C 위험 P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H330 흡입하면 치명적임 급성 독성 물질 흡입 구분 1, 2 위험 P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501
예방조치문구:
P260 분진·흄·가스·미스트·증기·...·스프레이를 흡입하지 마시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P284 호흡 보호구를 착용하시오.
P310 즉시 의료기관(의사)의 진찰을 받으시오. 삼켰다면 즉시 의료기관(의사)의 도움을 받으시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.

Dimethyl dicarbonate C화학적 특성, 용도, 생산

화학적 성질

Dimethyl dicarbonate (DMDC) is a colourless liquid with a slightly pungent aroma. It is primarily used as a beverage preservative, processing aid, or sterilant (Enumber 242). The application of DMDC is particularly useful when wine needs to be sterilized but cannot be sterile filtered, pasteurized, or sulfured. DMDC is also used to stabilize non-alcoholic beverages such as carbonated or non-carbonated juice beverages, isotonic sports beverages, iced teas, and flavored waters.

용도

Dimethyl Dicarbonate(DMDC) is a microbial control agent used in wine; ready-to-drink teas; nonjuice-containing beverages; carbonated,dilute beverages containing juice, fruit flavor or both with the juice content not exceeding 50%.
Dimethyl Dicarbonate has been commonly used as a antimicrobial agent for a broad spectrum of microorganisms. The primary target microorganisms of DMDC are yeasts, including Saccharomyces, Zygosaccharomyces, Rhodotorula, Candida, Pichia, Torulopsis, Torula, Endomyces, Kloeckera and Hansenula. DMDC is also bactericidal to a number of species including Acetobacter pasteurianus, Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, several Lactobacillus species and Pediococcus cerevisiae DMDC has also been shown to be bactericidal against Escherichia coli O157:H7.
The antimicrobial effect of DMDC results from the deactivation of microbial enzymes, mainly through reaction with protein imidazole and amine groups, leading to the destruction of the microorganisms. The remaining unreacted DMDC breaks down rapidly into methanol and carbon dioxide. The DMDC activity is based on the hydrolysis rate. Hydrolysis occurs when DMDC reacts with water and the rate is dependent on the temperature of the beverage or wine. It takes about four hours at 10°C (50°F) or two hours at 20°C (68°F) for DMDC completely breaking down.

Purification Methods

Dissolve it in Et2O, shake this with a small volume of 0.1N HCl, dry Et2O with Na2SO4 and distil in in vacuo below 100o to give a clear liquid. It decomposes to CO2 and dimethyl carbonate on heating at 123-149o. It is readily hydrolysed by H2O and is a yeast inhibitor and an IRRITANT. [Brysov et al. J Org Chem USSR 10 2551 1974, Boehm & Mehta Chem Ber 71 1797 1938, Beilstein 3 IV 17.]

Dimethyl dicarbonate 준비 용품 및 원자재

원자재

준비 용품


Dimethyl dicarbonate 공급 업체

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