요오드 메탄

요오드 메탄 속성

요오드 메탄 C화학적 특성, 용도, 생산

물성

아이오도메테인(Iodomethane)이라고도 한다. 화학식 CH3I. 무겁지만 휘발성이 큰 무색 액체로, 분자량 141.94, 녹는점 －63.8℃, 끓는점 42.5℃, 비중 2.2863(17℃)이다. 물에는 조금밖에 섞이지 않지만, 에탄올·에테르 등에는 임의의 비율로 섞인다. 빛을 쪼이면 서서히 분해하여 아이오딘을 유리(遊離)시키고 착색된다.
메테인의 수소 원자 1개를 아이오딘 원자로 치환한 구조를 가지고 있다. 메탄올에 아이오딘과 붉은인을 반응시키거나 황산다이메틸과 아이오딘화칼륨 수용액을 반응시키면 생성된다. 메틸화 시약으로서 널리 유기합성 실험에 사용되지만, 값이 비싸기 때문에 공업적 용도에 한정되어 있다. 갈색 병에 넣어서 시원하고 어두운 곳에 보관한다.

개요

요오드 메탄 은 분자식이 CH3I, MeI, 이는 메탄을 대체한다. 실온에서, 고밀도 휘발성 액체 1.59D의 쌍극자 모멘트 및 1.5304 (20 ℃ / D)의 굴절률을 가짐 1.5293 (21 ℃ / D)이 얻어진다. 요오드 메탄 은 일반적인 유기 물질과 혼합 될 수 있습니다.
용제, 무색 순수 제품, 햇빛에 노출되면 단순 요오드가 분해됩니다 보라색 성분의 요오드 메탄 은 금속 구리를 첨가하여 제거 할 수 있습니다. 에이 소량의 요오드 메탄 은 논에 존재합니다. 요오드 메탄 은 일반적으로 유기 합성에서 메틸화 시약 사용 .

용도

1. 요오드 메탄 이 메틸화 시약으로 사용됩니다.
2. 요오드 메탄 은 살균제, 제초제, 농약 또는 살충제로 사용하도록 제안되었다. 소화기 구성품.
3. 요오드 메탄 은 메틸 브로마이드 대신에 토양 소독제로 사용됩니다 (금지 몬트리올 협약).
4. 굴절률 때문에 요오드 메탄 은 현미경에도 사용됩니다.
5. 요오드 메탄 은 주로 의약, 유기 합성, 피리딘 검사, 현미경 등에 사용된다.

화학적 성질

light yellow to light pink liquid

물리적 성질

Clear, colorless liquid which may become yellow, red, or brown on exposure to light and moisture

용도

.Iodomethane is an approved pesticide used to control insects, plant parasitic nematodes, soil borne pathogens and weed seeds.

생산 방법

Methyl iodide has had very limited use as a chemical intermediate (methylations), and in microscopy because of its high refractive index, as imbedding materials for examining diatoms, and in tests for pyridine. It has been proposed as a fire extinguisher and insecticidal fumigant. It is a product of natural biological processes. Methyl iodide is a currently registered pesticide.

정의

ChEBI: A member of the class of iodomethanes that is methane in which one of the hydrogens is replaced by iodine.

일반 설명

A colorless liquid that turns brown on exposure to light. Denser than water. Contact may irritate skin, eyes and mucous membranes. Very toxic by ingestion, inhalation and skin absorption.

공기와 물의 반응

Soluble in water. Sinks and slowly decomposes in water forming poisonous vapor cloud of HI.

반응 프로필

Halogenated aliphatic compounds, such as Iodomethane, are moderately or very reactive. Reactivity generally decreases with increased degree of substitution of halogen for hydrogen atoms. Low molecular weight haloalkanes are highly flammable and can react with some metals to form dangerous products. Materials in this group are incompatible with strong oxidizing and reducing agents. Also, they are incompatible with many amines, alkylphosphines, nitrides, azo/diazo compounds, alkali metals (sodium), and epoxides.

위험도

Toxic by ingestion, inhalation, and skinabsorption; narcotic, irritant to skin. Eye damageand central nervous system impairment. Question-able carcinogen.

건강위험

Inhalation of vapor causes lung congestion and pulmonary edema. Higher concentrations causes rapid narcosis and death. Contact with liquid irritates eyes and burns skin.

화재위험

Noncombustible. High vapor pressure may cause containers to burst at elevated temperatures.

인화성 및 폭발성

Noncombustible. High vapor pressure may cause containers to burst at elevated temperatures.

Safety Profile

Confirmed carcinogen with experimental neoplastigenic and tumorigenic data. A poison by ingestion, intraperitoneal, and subcutaneous routes. Moderately toxic by inhalation and skin contact. A human skin irritant. Human mutation data reported. A strong narcotic and anesthetic. Explosive reaction with trialkylphosphines, silver chlorite. Violent reaction with oxygen (at 3000C), sodium. When heated to decomposition it emits toxic fumes of I-.

잠재적 노출

Methyl iodide is used in fire extinguishers; as an intermediate in the manufacture of pharmaceuticals and some pesticides.

Carcinogenicity

Druckrey et al. reported local sarcomas following weekly subcutaneous injection in BD strain rats. Strain A mice (a susceptible strain) that were injected with methyl iodide were reported to have a slight but significant increase in the number of lung tumors per mouse. Poirer et al. administered iodomethane dissolved in tricaprylin to male and female strain A mice (10/sex/dose) three times weekly by intraperitoneal injection. There was a marginally statistically significant trend for increased lung tumors in treated mice but the outcome was considered equivocal: no clear dose–response relationship and occurrence of spontaneous tumors in untreated mice.
Under the 2005 Guidelines for Carcinogen Risk Assessment (121), the lack of available evidence suggests that there is “inadequate information to assess the carcinogenic potential for iodomethane.”
An early evaluation by the IARC classified iodomethane as carcinogenic in rats. Two subsequent evaluations (123, 124) determined that there is limited evidence for carcinogenicity in experimental animals and the compound is not classifiable regarding carcinogenicity to humans. ACGIH has also reviewed iodomethane carcinogenicity and classified it as category A2, suspected human carcinogen; however, the A2 classification was withdrawn in 1996. Iodomethane was delisted as a carcinogen in the NTP 5th Annual Report on Carcinogens on the basis of the 1986 IARC reevaluation. NTP has not tested iodomethane for carcinogenicity. The State of California determined under Proposition 65 that methyl iodide is a carcinogen, based on the 1977 IARC evaluation. Neither a Toxicological Profile nor an Environmental Health Criteria Monograph has been published.

환경귀착

Chemical/Physical. Anticipated products from the reaction of methyl iodide with ozone or OH radicals in the atmosphere are formaldehyde, iodoformaldehyde, carbon monoxide, and iodine radicals (Cupitt, 1980). With OH radicals, CH2, methyl radical, HOI and water are possible reaction products (Brown et al., 1990). The estimated half-life of methyl iodide in the atmosphere, based on a measured rate constant for the vapor phase reaction with OH radicals, ranges from 535 h to 32 wk (Garraway and Donovan, 1979).
Hydrolyzes in water forming methyl alcohol and hydriodic acid. The estimated half-life in water at 25 °C and pH 7 is 110 d (Mabey and Mill, 1978). At 70 °C, the hydrolysis rate was determined to be 3.2 x 10^-5/sec which is equivalent to a half-life of 6 h. (Glows and Wren, 2003). May react with chlorides in seawater to form methyl chloride (Zafiriou, 1975).

운송 방법

UN2644 Methyl iodide, Hazard Class: 6.1; Labels: 6.1-Poison Inhalation Hazard, Inhalation Hazard Zone B

Purification Methods

Methyl iodide deteriorates rapidly with liberation of iodine if exposed to light. It is usually purified by shaking with dilute aqueous Na2S2O3 or NaHSO3 until colourless, then washing with water, dilute aqueous Na2CO3, and more water, drying with CaCl2 and distilling. It is stored in a brown bottle away from sunlight in contact with a small amount of mercury, powdered silver or copper. (Prolonged exposure of mercury to methyl iodide forms methylmercuric iodide.) Methyl iodide can be dried further using CaSO4 or P2O5. An alternative purification is by percolation through a column of silica gel or activated alumina, then distillation. The solution can be degassed by using a repeated freeze-pump-thaw cycle. [Beilstein 1 IV 87.]

비 호환성

May form explosive mixture with air. Slowly reacts with water forming poisonous hydrogen iodide. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Violent reaction with strong oxidizers, strong reducing agents, strong bases; trialkylphosphines, silver chlorite; calcium, oxygen, sodium. Decomposes @ 270C. Halogenated aliphatic compounds are moderately or very reactive. Halogenated organics generally become less reactive as more of their hydrogen atoms are replaced with halogen atoms. Low molecular weight haloalkanes are highly flammable and can react with some metals to form dangerous products. Materials in this group are incompatible with strong oxidizing and reducing agents. Also, they are incompatible with many amines, alkylphosphines, nitrides, azo/diazo compounds, alkali metals (sodium), and epoxides

폐기물 처리

Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform to EPA regulations governing storage, transportation, treatment, and waste disposal

요오드 메탄 준비 용품 및 원자재

원자재

준비 용품

요오드 메탄 공급 업체

공급자	전화	이메일	국가	제품 수	이점
Hebei Mojin Biotechnology Co., Ltd	+8613288715578	sales@hbmojin.com	China	12452	58
Zibo Hangyu Biotechnology Development Co., Ltd	+86-0533-2185556 +8617865335152	Mandy@hangyubiotech.com	China	11013	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	7038	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21695	55
ATK CHEMICAL COMPANY LIMITED	+undefined-21-51877795	ivan@atkchemical.com	China	32480	60
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418679 +86-18949832763	info@tnjchem.com	China	2989	55
Biochempartner	0086-13720134139	candy@biochempartner.com	CHINA	967	58
Hubei Jusheng Technology Co.,Ltd.	18871490254	linda@hubeijusheng.com	CHINA	28180	58
Hebei Guanlang Biotechnology Co., Ltd.	+86-19930503282	alice@crovellbio.com	China	8822	58
Hubei xin bonus chemical co. LTD	86-13657291602	linda@hubeijusheng.com	CHINA	22968	58

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