Dichloromonofluoromethane Struktur

Dichlorfluormethan

Bezeichnung:Dichlorfluormethan

CAS-Nr75-43-4

Englisch Name:Dichloromonofluoromethane

CBNumberCB8724331

SummenformelCHCl2F

Molgewicht102.92

MOL-Datei75-43-4.mol

Synonyma

Dichlorfluormethan

Fluordichlormethan

HCFC 21

Dichlorfluormethan physikalisch-chemischer Eigenschaften

Schmelzpunkt	-135°C
Siedepunkt	8.9°C
Dichte	1,354 g/cm³
Dampfdruck	1,216 at 11.8 °C (NIOSH, 1997)
Brechungsindex	1.3540
Löslichkeit	Soluble in acetic acid, alcohol, and ether (Weast, 1986)
Aggregatzustand	Colorless gas
Farbe	Colorless liquid or gas with an ether-like odor
Wasserlöslichkeit	0.7 wt % at 30 °C (NIOSH, 1997)
Expositionsgrenzwerte	NIOSH REL: TWA 10 ppm (40 mg/m³), IDLH 5,000 ppm; OSHA PEL: TWA 1,000 ppm (4,200 mg/m³); ACGIH TLV: TWA 10 ppm (adopted).
Dielectric constant	5.3（28℃）
NIST chemische Informationen	Methane, dichlorofluoro-(75-43-4)
EPA chemische Informationen	HCFC-21 (75-43-4)

Sicherheit

Kennzeichnung gefährlicher	N
R-Sätze:	59
S-Sätze:	59
RIDADR	1029
OEB	A
OEL	TWA: 10 ppm (40 mg/m3)
RTECS-Nr.	PA8400000
HazardClass	2.2
Giftige Stoffe Daten	75-43-4(Hazardous Substances Data)
Toxizität	LC₅₀ (inhalation) for rats 49,900 ppm/4-h (quoted, RTECS, 1985).
IDLA	5,000 ppm

Gefahreninformationscode (GHS)

Dichloromonofluoromethane Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
FARBLOSES GAS ODER KOMPRIMIERTES FLüSSIGGAS MIT CHARAKTERISTISCHEM GERUCH.
PHYSIKALISCHE GEFAHREN
Das Gas ist schwerer als Luft. Es kann sich in tiefer gelegenen Bereichen sammeln und den Luftsauerstoff verdrängen.
CHEMISCHE GEFAHREN
Zersetzung beim Erhitzen unter Bildung ätzender und hochgiftiger Rauche (Chlorwasserstoff - s. ICSC 0163, Fluorwasserstoff - s. ICSC 0283 und Phosgen - s. ICSC 0007). Reagiert mit pulverförmigem Aluminium, Zink und Magnesium. Reagiert mit Säuren oder Säurerauchen unter Bildung hochgiftiger Rauche (Chloride, Fluoride). Greift einige Kunststoff-, Gummi- und Beschichtungsarten an.
ARBEITSPLATZGRENZWERTE
TLV: 10 ppm (als TWA); (ACGIH 2005).
MAK: 10 ppm 43 mg/m?Spitzenbegrenzung: überschreitungsfaktor II(2); (DFG 2008).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation.
INHALATIONSGEFAHREN
Eine gesundheitsschädliche Konzentration des Gases in der Luft wird beim Entweichen aus dem Behälter sehr schnell erreicht.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:
Die Flüssigkeit kann Erfrierungen hervorrufen. Möglich sind Auswirkungen auf das Zentralnervensystem bei hohen Konzentrationen. Exposition weit oberhalb der Arbeitsplatzgrenzwerte kann zu Herzrhythmusstörungen führen.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Möglich sind Auswirkungen auf die Leber.
LECKAGE
Belüftung. Wasserstrahl NIEMALS auf die Flüssigkeit richten. NICHT in die Umwelt gelangen lassen. Persönliche Schutzausrüstung: Umgebungsluftunabhängiges Atemschutzgerät.
R-Sätze Betriebsanweisung:
R59:Gefährlich für die Ozonschicht.
S-Sätze Betriebsanweisung:
S59:Informationen zur Wiederverwendung/Wiederverwertung beim Hersteller/Lieferanten erfragen.
Beschreibung
Dichlorofluoro-methane is a heavy, colorlessgas or liquid (below 9℃) with a slight ether-like odor.Molecular weight=102.92; Boiling point=9℃; Freezing/Melting point=2135℃; Relative vapor density (air-5 1)=3.57; Vapor pressure=1.6 atm at 25℃;Autoignition temperature=522℃. Hazard Identification(based on NFPA-704 M Rating System): Health 1,Flammability 0, Reactivity 0. Poor solubility in water;solubility=0.7% at 30℃.
Chemische Eigenschaften
Dichlorofluoromethane is a heavy, colorless gas or liquid (below 9C) with a slight ethereal odor.
Verwenden
Fire extinguishers; solvent; refrigerant.
Verwenden
Refrigerant gas; propellant gas
Allgemeine Beschreibung
Dichloromonofluoromethane is a colorless, odorless gas. Dichloromonofluoromethane is shipped as a liquid under its own vapor pressure. Contact with the liquid may cause frostbite to unprotected skin. Dichloromonofluoromethane can asphyxiate by displacement of air. Exposure of the container to prolonged heat or fire may cause Dichloromonofluoromethane to rupture violently and rocket.
Air & Water Reaktionen
Slightly soluble in water.
Reaktivität anzeigen
Dichloromonofluoromethane is incompatible with the following: Chemically-active metals such as sodium, potassium, calcium, powdered aluminum, zinc & magnesium; acid; acid fumes .
Health Hazard
INHALATION: May cause giddiness, light-headedness, disorientation, nausea, vomiting, narcosis, cardiac dysrhythmias, hypotension, and death. SKIN: May cause frostbite or irritation. EYES: May cause irritation or cold injury.
Brandgefahr
Special Hazards of Combustion Products: Toxic fumes of chlorine and fluorine may be produced in fire.
Sicherheitsprofil
Mildly toxic by inhalation. Experimental reproductive effects. When heated to decomposition it emits very toxic fumes of Cl and F-.
mögliche Exposition
This material is used as a refrigerant and a propellant gas.
Erste Hilfe
If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and inducevomiting. Do not make an unconscious person vomit. Iffrostbite has occurred, seek medical attention immediately;do NOT rub the affected areas or flush them with water. Inorder to prevent further tissue damage, do NOT attempt toremove frozen clothing from frostbitten areas. If frostbitehas NOT occurred, immediately and thoroughly wash contaminated skin with soap and water.
Environmental Fate
Chemical/Physical. The experimental hydrolysis half-life of dichlorofluoromethane in water at 25 °C and pH 7 is 234 yr (Jeffers and Wolfe, 1996).
Lager
Color Code—Green: General storage may be used.Prior to working with dichloromonofluoro-methane you shouldbe trained on its proper handling and storage. Store in tightlyclosed containers in a cool, well-ventilated area away fromchemically active metals, acids, acid fumes, alkali and alkalineearth metals, since violent reaction occur. Procedures for thehandling, use, and storage of cylinders should be in compliance with OSHA 1910.101 and 1910.169, as with the recommendations of the Compressed Gas Association.
Versand/Shipping
UN1029 Dichlorofluoromethane or Refrigerant gas R-21 Hazard Class: 2.2; Labels: 2.2-Nonflammable compressed gas. Cylinders must be transported in a secure upright position, in a well-ventilated truck. Protect cylinder and labels from physical damage. The owner of the compressed gas cylinder is the only entity allowed by federal law (49CFR) to transport and refill them. It is a violation of transportation regulations to refill compressed gas cylinders without the express written permission of the owner.
Inkompatibilitäten
Reacts violently with chemically active metals: sodium, potassium, calcium, powdered aluminum; zinc, magnesium, alkali, alkaline earth. Reacts with acids or acid fumes producing highly toxic chlorine and fluorine fumes. Attacks some forms of plastics, rubber, and coatings.
Waste disposal
Return refillable compressed gas cylinders to supplier. 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. Because of recent discovery of potential ozone decomposition in the stratosphere, this material should be released to the atmosphere only as a last resort

Dichloromonofluoromethane Upstream-Materialien And Downstream Produkte

75-43-4, Dichloromonofluoromethane Verwandte Suche:

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