디클로로메탄

디클로로메탄
디클로로메탄 구조식 이미지
카스 번호:
75-09-2
한글명:
디클로로메탄
동의어(한글):
염화메틸렌;솔라에스틴;솔메틴;에어로텐MM;이염화메틸렌;TC523에폭시;나르코틸;다이클로로메테인;디클로로메탄;락코메틸렌염화물;메탄,디클로로-;설비세척솔벤트;에어로텐(R)MM솔벤트(AEROTHENE;이염화메탄;다이클로로메탄;메틸렌 다이클로라이드;메틸렌 클로라이드
상품명:
Dichloromethane
동의어(영문):
DCM;METHYLENE CHLORIDE;CH2Cl2;Methylene dichloride;Dichlormethan;F30;Methylenchlorid;DichL;Metaclen;Dichlorome
CBNumber:
CB7740372
분자식:
CH2Cl2
포뮬러 무게:
84.93
MOL 파일:
75-09-2.mol

디클로로메탄 속성

녹는점
-97 °C
끓는 점
39.8-40 °C mm Hg(lit.)
밀도
1.325 g/mL at 25 °C(lit.)
증기 밀도
2.9 (vs air)
증기압
24.45 psi ( 55 °C)
굴절률
n20/D 1.424(lit.)
인화점
39-40°C
저장 조건
room temp
용해도
Miscible in ethyl acetate, alcohol, hexanes, methanol, diethyl ether, n-octanol, acetone benzene, carbon tetrachloride, diethyl ether and chloroform.
물리적 상태
Liquid
Specific Gravity
1.329 (20/20℃)
색상
APHA: ≤10
냄새
Odor threshold 160 to 230 ppm
Odor Threshold
160ppm
폭발한계
13-22%(V)
수용성
20 g/L (20 ºC)
최대 파장(λmax)
λ: 235 nm Amax: 1.00
λ: 240 nm Amax: 0.20
λ: 250 nm Amax: 0.05
λ: 260 nm Amax: 0.02
λ: 340-400 nm Amax: 0.01
Merck
14,6063
BRN
1730800
Henry's Law Constant
2.49 at 30 °C (headspace-GC, Sanz et al., 1997)
노출 한도
TLV-TWA 50 ppm (~175 mg/m3) (ACGIH); carcinogenicity: Suspected Human Carcinogen (ACGIH), Animal Sufficient Evidence, Human Inadequate Evidence (IARC).
CAS 데이터베이스
75-09-2(CAS DataBase Reference)
IARC
2A (Vol. Sup 7, 71, 110) 2017
NIST
Methylene chloride(75-09-2)
EPA
Methylene chloride (75-09-2)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xn,T,F,N,C
위험 카페고리 넘버 40-39/23/24/25-23/24/25-11-67-36/37/38-68/20/21/22-20/21/22-50-37-34
안전지침서 23-24/25-36/37-45-16-7-26-61-36/37/39
유엔번호(UN No.) UN 1593 6.1/PG 3
WGK 독일 2
RTECS 번호 PA8050000
F 고인화성물질 3-10
자연 발화 온도 556 °C
위험 참고 사항 Harmful
TSCA Yes
HS 번호 2903 12 00
위험 등급 6.1
포장분류 III
유해 물질 데이터 75-09-2(Hazardous Substances Data)
독성 LD50 orally in young adult rats: 1.6 ml/kg (Kimura)
IDLA 2,300 ppm
기존화학 물질 KE-23893
유해화학물질 필터링 2019-1-931
중점관리물질 필터링 별표1-15
함량 및 규제정보 물질구분: 유독물질; 혼합물(제품)함량정보: 염화 메틸렌[Methylene chloride; 75-09-2] 및 이를 0.1% 이상 함유한 혼합물
그림문자(GHS): GHS hazard pictogramsGHS hazard pictograms
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 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
H336 졸음 또는 현기증을 일으킬 수 있음 특정표적장기 독성 물질(1회 노출);마취작용 구분 3 경고 P261, P271, P304+P340, P312,P403+P233, P405, P501
H351 암을 일으킬 것으로 의심됨 (노출되어도 암을 일으키지 않는다는 결정적인 증거가 있는 노출경로가 있다면 노출경로 기재) 발암성 물질 구분 2 경고 P201, P202, P281, P308+P313, P405,P501
예방조치문구:
P201 사용 전 취급 설명서를 확보하시오.
P202 모든 안전 조치 문구를 읽고 이해하기 전에는 취급하지 마시오.
P261 분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.
P302+P352 피부에 묻으면 다량의 물로 씻으시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P308+P313 노출 또는 접촉이 우려되면 의학적인 조치· 조언를 구하시오.
NFPA 704
4
2 0

디클로로메탄 C화학적 특성, 용도, 생산

개요

Dichloromethane is a colorless liquid with an ethereal, but penetrating odor. Its miscibility in alcohol and ether and slight solubility in water has made it an ideal solvent and otherwise extremely versatile chemical. It has been used industrially (solvent and paint remover), as a drug (inhalation anesthetic) and as an agricultural chemical (growth regulator and fertilizer). It is narcotic in high concentrations and carcinogenic. Inhalation exposure to this substance irritates the nose and throat and affects the central nervous system.

화학적 성질

Dichloromethane is a colorless liquid with a mild, sweet odor. It does not occur naturally in the environment. It is made from methane gas or wood alcohol. Industrial uses of dichloromethane are extensive, as a solvent in paint strippers, as a propellant in aerosols, and as a process solvent in the manufacturing of drugs. dichloromethane is also used as a metal cleaning and fi nishing solvent, and it is approved as an extraction solvent for spices and hops. Exposure to dichloromethane occurs in workplaces by breathing fumes from paint strippers that contain it (check the label), breathing fumes from aerosol cans that use it (check the label), and breathing contaminated air near waste sites.

물리적 성질

Clear, colorless liquid with a sweet, penetrating, ethereal odor. Leonardos et al. (1969) determined an odor threshold concentration of 214.0 ppmv. The average least detectable odor threshold concentrations of technical grade methylene chloride in water at 60 °C and in air at 40 °C were 5.6 and 24 mg/L, respectively (Alexander et al., 1982).

용도

Methylene chloride is widely used as asolvent, as a degreasing and cleaning reagent,in paint removers, and in extractions oforganic compounds from water for analyses.

생산 방법

Dichloromethane was first prepared by Regnault in 1840 by the chlorination of methyl chloride in sunlight. It became an industrial chemical of importance during the Second World War. Two commercial processes are currently used for the production of dichloromethane—hydrochlorination of methanol and direct chlorination of methane (Rossberg et al., 1986; Holbrook, 1993). The predominant method of manufacturing dichloromethane uses as a first step the reaction of hydrogen chloride and methanol to give methyl chloride. Excess methyl chloride is then mixed with chlorine and reacts to give dichloromethane, with chloroform and carbon tetrachloride as co-products. This reaction is usually carried out in the gas phase thermally but can also be performed catalytically or photolytically. At low temperature and high pressure, the liquid-phase process is capable of giving high selectivity for dichloromethane (Rossberg et al., 1986; Holbrook, 1993). ?

화학 반응

Methylene chloride reacts violently in the presence of alkali or alkaline earth metals and will hydrolyze to formaldehyde in the presence of an aqueous base. Alkylation reactions occur at both functions, thus di-substitutions result.

일반 설명

Dichloromethane has been tested as a solvent medium for the dipyridine-chromium(VI) oxide. Solubility was reported to be 12.5g/100ml. Role of quantity of TiO2 loading on activated carbon support employed in the photodecomposition of dichloromethane has been investigated.

공기와 물의 반응

Methylene chloride is a colourless liquid with a mild, sweet odour. Somewhat water soluble. Subject to slow hydrolysis which is accelerated by light.

반응 프로필

Dichloromethane reacts vigorously with active metals such as lithium, sodium and potassium, and with strong bases such as potassium tert-butoxide. Dichloromethane is incompatible with strong oxidizers, strong caustics and chemically active metals such as aluminum or magnesium powders. The liquid will attack some forms of plastic, rubber and coatings. Dichloromethane reacts with sodium-potassium alloy, (potassium hydrogen + N-methyl-N-nitrosurea), nitrogen tetraoxide and liquid oxygen. Dichloromethane also reacts with titanium. On contact with water Dichloromethane corrodes iron, some stainless steels, copper and nickel. Dichloromethane is incompatible with alkali metals. Dichloromethane is incompatible with amines, zinc and alloys of aluminum, magnesium and zinc. Dichloromethane is liable to explode when mixed with dinitrogen pentaoxide or nitric acid. Mixtures of Dichloromethane in air with methanol vapor are flammable.

위험도

Toxic. A narcotic. Central nervous systemimpairment and carboxyhemoglobinemia. Possiblecarcinogen.

건강위험

Dichloromethane is classified as only slightly toxic by the oral and inhalation routes. Exposure to high concentrations of dichloromethane vapor (>500 ppm for 8 h) can lead to lightheadedness, fatigue, weakness, and nausea. Contact of the compound with the eyes causes painful irritation and can lead to conjunctivitis and corneal injury if not promptly removed by washing. Dichloromethane is a mild skin irritant, and upon prolonged contact (e.g., under the cover of clothing or shoes) can cause burns after 30 to 60 min exposure. Dichloromethane is not teratogenic at levels up to 4500 ppm or embryotoxic in rats and mice at levels up to 1250 ppm.

화재위험

Special Hazards of Combustion Products: Dissociation products generated in a fire may be irritating or toxic.

인화성 및 폭발성

Noncombustible. Dichloromethane vapor concentrated in a confined or poorly ventilated area can be ignited with a high-energy spark, flame, or high-intensity heat source.

화학 반응

Reactivity with Water No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

Safety Profile

Confirmed carcinogen with experimental carcinogenic and tumorigenic data. Poison by intravenous route. Moderately toxic by ingestion, subcutaneous, and intraperitoneal routes. Mildly toxic by inhalation. Human systemic effects by ingestion and inhalation: paresthesia, somnolence, altered sleep time, convulsions, euphoria, and change in cardlac rate. An experimental teratogen. Experimental reproductive effects. An eye and severe skin irritant. Human mutation data reported. It is flammable in the range of 12-19% in air but ignition is difficult. It will not form explosive mixtures with air at ordinary temperatures. Mixtures in air with methanol vapor are flammable. It will form explosive mixtures with an atmosphere having a high oxygen content, in liquid O2, N2O4, K, Na, NaK. Explosive in the form of vapor when exposed to heat or flame. Reacts violently with Li, NaK, potassiumtert- butoxide, (KOH + N-methyl-Nnitrosourea). It can be decomposed by contact with hot surfaces and open flame, and then yield toxic fumes that are irritating and give warning of their presence. When heated to decomposition it emits highly toxic fumes of phosgene and Cl-.

잠재적 노출

Methylene chloride is used mainly as a low-temperature extractant of substances which are adversely affected by high temperature. It can be used as a solvent for oil, fats, waxes, bitumen, cellulose acetate; and esters. It is also used as a paint remover; as a degreaser; and in aerosol propellants

Carcinogenicity

Dichloromethane is reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in experimental animals.

운송 방법

UN1593Dichloromethane, Hazard Class: 6.1; Labels: 6.1-Poisonous materials

Purification Methods

Shake it with portions of conc H2SO4 until the acid layer remains colourless, then wash with water, aqueous 5% Na2CO3, NaHCO3 or NaOH, then water again. Pre-dry with CaCl2, and distil it from CaSO4, CaH2 or P2O5. Store it away from bright light in a brown bottle with Linde type 4A molecular sieves, in an atmosphere of dry N2. Other purification steps include washing with aqueous Na2S2O3, passage through a column of silica gel, and removal of carbonyl-containing impurities as described under Chloroform. It has also been purified by treatment with basic alumina, distillation, and stored over molecular sieves under nitrogen [Puchot et al. J Am Chem Soc 108 2353 1986]. Dichloromethane from Japanese sources contained MeOH as stabiliser which is not removed by distillation. It can, however, be removed by standing over activated 3A Molecular Sieves (note that 4A Sieves cause the development of pressure in bottles), passed through activated Al2O3 and distilled [Gao et al. J Am Chem Soc 109 5771 1987]. It has been fractionated through a platinum spinning band column, degassed, and distilled onto degassed molecular sieves Linde 4A (heated under high vacuum at over 450o until the pressure readings reached the low values of 10-6 mm, ~1-2hours ). Stabilise it with 0.02% of 2,6-di-tert-butyl-p-cresol [Mohammad & Kosower J Am Chem Soc 93 2713 1971]. [Beilstein 1 IV 35.] Rapid purification: Reflux over CaH2 (5% w/v) and distil it. Store it over 4A molecular sieves.

비 호환성

Incompatible with strong oxidizers, caustics; chemically active metals, such as aluminum, magnesium powders; potassium, lithium, and sodium; concentrated nitric acid causing fire and explosion hazard. Contact with hot surfaces or flames causes decomposition producing fumes of hydrogen chloride and phosgene gas. Attacks some forms of plastics, rubber and coatings. Attacks metals in the presence of moisture.

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. Incineration, preferably after mixing with another combustible fuel; care must be exercised to assure complete combustion to prevent the formation of phosgene; an acid scrubber is necessary to remove the halo acids produced.

디클로로메탄 준비 용품 및 원자재

원자재

준비 용품


디클로로메탄 공급 업체

글로벌( 1196)공급 업체
공급자 전화 이메일 국가 제품 수 이점
Anhui Rencheng Technology Co., Ltd
+8616655163890
admin@ahrencheng.com China 974 58
Shandong Yanshuo Chemical Co., Ltd.
+86-18678179670 +86-18615116763
sales@yanshuochem.com China 101 58
Shaanxi Didu New Materials Co. Ltd
+86-89586680 +86-13289823923
1005@dideu.com China 9986 58
Lihe Pharm Technology(Wuhan)Co.,Ltd
+8618071517867
info@lihepharma.com China 213 58
HENAN LIHAO CHEM PLANT LIMITED
+86-0371-88812595 +8618703631882
haoexport812@vip.163.com China 34975 58
Shijiazhuang Suking Biotechnology Co .,Ltd.
+86-17318586295 +86-17318586295
sales1@sxbiology.com China 273 58
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512
info@tianfuchem.com China 21975 55
Hangzhou FandaChem Co.,Ltd.
+8615858145714
fandachem@gmail.com China 9364 55
Hefei TNJ Chemical Industry Co.,Ltd.
0551-65418679
info@tnjchem.com China 2990 55
Shanxi Naipu Import and Export Co.,Ltd
+86-13734021967 +8613734021967
kaia@neputrading.com China 1005 58

디클로로메탄 관련 검색:

Copyright 2019 © ChemicalBook. All rights reserved