디이오도메탄

디이오도메탄
디이오도메탄 구조식 이미지
카스 번호:
75-11-6
한글명:
디이오도메탄
동의어(한글):
디이오도메탄
상품명:
Diiodomethane
동의어(영문):
CH2I2;METHYLENE IODIDE;Diodomethane;Mi-gee;Diiodmethan;Dijodmethan;Diiodmethane;Mi-gee brand;diiodo-methan;DIIODOMETHANE
CBNumber:
CB6854214
분자식:
CH2I2
포뮬러 무게:
267.84
MOL 파일:
75-11-6.mol
MSDS 파일:
SDS

디이오도메탄 속성

녹는점
6 °C
끓는 점
67-69 °C11 mm Hg(lit.)
밀도
3.325 g/mL at 25 °C(lit.)
증기 밀도
9.25 (vs air)
굴절률
1.737
인화점
181°C
저장 조건
Store below +30°C.
용해도
0.8g/L
물리적 상태
액체
색상
진한 노란색
Specific Gravity
3.325
수용성
14g/L(20℃)
감도
Light Sensitive
Merck
14,6066
BRN
1696892
Dielectric constant
5.3(-4℃)
안정성
안정적인. 강한 산화제, 강한 염기와 호환되지 않습니다. 알칼리금속염과 격렬하게 반응함. 빛에 노출되면 변색될 수 있습니다.
CAS 데이터베이스
75-11-6(CAS DataBase Reference)
NIST
Methane, diiodo-(75-11-6)
EPA
Methylene iodide (75-11-6)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xi,Xn
위험 카페고리 넘버 36/37/38-22-20/21/22
안전지침서 26-37/39-36/37/39
유엔번호(UN No.) 2810
WGK 독일 3
RTECS 번호 PA8575000
F 고인화성물질 8
TSCA Yes
위험 등급 6.1
포장분류 III
HS 번호 29033080
독성 LD50 orally in Rabbit: 76 mg/kg
그림문자(GHS): GHS hazard pictograms
신호 어: Danger
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 GHS hazard pictograms P264, P280, P302+P352, P321,P332+P313, P362
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 GHS hazard pictograms P264, P280, P305+P351+P338,P337+P313P
H332 흡입하면 유해함 급성 독성 물질 흡입 구분 4 경고 GHS hazard pictograms P261, P271, P304+P340, P312
H335 호흡 자극성을 일으킬 수 있음 특정 표적장기 독성 - 1회 노출;호흡기계 자극 구분 3 경고 GHS hazard pictograms
예방조치문구:
P261 분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P301+P310 삼켰다면 즉시 의료기관(의사)의 진찰을 받으시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
NFPA 704
0
2 0

디이오도메탄 MSDS


Diiodomethane

디이오도메탄 C화학적 특성, 용도, 생산

용도

유기 합성을.

개요

Diiodomethane (CH2I2) is an iodine containing organic compound. Its decomposition in acetonitrile initiated by 310nm light has been investigated. Femtosecond pump-probe spectroscopic and ab initio molecular dynamics simulations studies of the photodecomposition of CH2I2 suggest the formation of the isomer of diiodomethane (CH2I-I) as hot photoproduct. In the atmosphere, it undergoes photolysis in the presence of ozone to afford iodine oxide (IO) which results in the formation of aerosols. Its vacuum ultraviolet (VUV) photoabsorption spectrum has been reported.
Diiodomethane
Diiodomethane has been used as a probe liquid for evaluation of the polar and dispersive components of the surface energy of the catecholamine coated fiber surfaces. It may be used for the preparation of cyclopropyl ketones, esters and amides.
Diiodomethane may be used as a probe solvent in contact angle measurement to analyze the hydrophilicity of polymer surfaces.
https://www.sigmaaldrich.com/catalog/product/sial/158429

화학적 성질

Diiodomethane is a light yellow or gold liquid with chloroform-like odour. It has a relative density of 3.325 at 20°C and can be mixed with benzene to produce liquids with different densities. These mixtures are used in the determination of the refractive indices of minerals and for the separation of minerals according to density.

용도

Diiodomethane is used to determine the density of minerals and other solid samples due to its high density. It is used as an optical contact liquid to determine the refractive index of certain gemstones. In simmons-smith reaction, it acts as a reagent to generate methylene (carbine) free radical. It reacts with olefins to prepare cyclopropanes with high stereo specificity.

주요 응용

Diiodomethane is used as the dispersive (non-polar) liquid while de-ionized water and glycerol as polar liquids. It is also used in separating mixtures of minerals. In determining the specific gravity of minerals and other substances. In the manufacture of x-ray contrast media.

일반 설명

Diiodomethane (CH2I2) is an iodine containing organic compound. Its decomposition in acetonitrile initiated by 310nm light has been investigated. Femtosecond pump-probe spectroscopic and ab initio molecular dynamics simulations studies of the photodecomposition of CH2I2 suggest the formation of the isomer of diiodomethane (CH2I-I) as hot photoproduct. In the atmosphere, it undergoes photolysis in the presence of ozone to afford iodine oxide (IO) which results in the formation of aerosols. Its vacuum ultraviolet (VUV) photoabsorption spectrum has been reported.

위험도

May be irritating and narcotic.
Diiodomethane has the advantages of high opacity,ease of penetration,and ease of removal because it evaporates fairly quickly.However,it can cause skin burns.

Synthesis

Diiodomethane can be prepared from the widely available solvent dichloromethane by the action of sodium iodide in acetone in the Finkelstein reaction:
CH2Cl2 + 2 NaI → CH2I2 + 2 NaCl.
It can also be prepared by reducing iodoform with elemental phosphorus or sodium arsenite:
CHI3 + Na3AsO3 + NaOH → CH2I2 + NaI + Na3AsO.
Diiodomethane is prepared by reacting iodoform with sodium acetate in ethanol.

Purification Methods

Fractionally distil it under reduced pressure, then fractionally crystallise it by partial freezing, and stabilize it with silver wool if necessary. It has also been purified by drying over CaCl2 and fractionally distilling from Cu powder. Store it in the dark. [Beilstein 1 IV 97.]

디이오도메탄 준비 용품 및 원자재

원자재

준비 용품


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