8 relations: Dichlorofluoromethane, HMAS Melbourne (R21), List of R-phrases, R-21 (missile), R21 (New York City Subway car), R21 (South Africa), Renault 21, USS R-21 (SS-98).
Dichlorofluoromethane
Dichlorofluoromethane or Freon 21 or R 21 is a halomethane or hydrochlorofluorocarbon. It is a colorless and odorless gas. Its critical point is at 178.5 °C (451.7 K) and 5.17 MPa (51.7 bar). At temperatures from 5 K to 105 K it has one phase in the space group Pbca.
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HMAS Melbourne (R21)
HMAS Melbourne (R21) was a ''Majestic''-class light aircraft carrier of the Royal Australian Navy (RAN).
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List of R-phrases
R-phrases (short for risk phrases) are defined in Annex III of European Union Directive 67/548/EEC: Nature of special risks attributed to dangerous substances and preparations.
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R-21 (missile)
The R-21 (Р-21; NATO: SS-N-5 'Sark/Serb'; GRAU: 4K55) was a submarine-launched ballistic missile in service with the Soviet Union between 1963 and 1989.
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R21 (New York City Subway car)
The R21 was a New York City Subway car built by St. Louis Car Company from 1956 to 1957 for the IRT A Division.
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R21 (South Africa)
The R21 / P157 is a major north-south provincial route (with a freeway portion designated as a National Road) in eastern Gauteng Province, South Africa.
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Renault 21
The Renault 21 is a large family car produced by French automaker Renault between 1986 and 1994.
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USS R-21 (SS-98)
USS R-21 (SS-98) was an ''R''-class coastal and harbor defense submarine of the United States Navy.
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Redirects here:
R 21, R-21, R.21, R21 (disambiguation), R21 road.