Chemistry Abbreviations Starting with the Letter R

Abbreviations and Acronyms Used in Chemistry

Radon (Chemical Element)
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Chemistry abbreviations and acronyms are common in all fields of science. This collection offers common abbreviations and acronyms beginning with the letter R used in chemistry and chemical engineering.
°R - degrees Rankine
R - Arginine amino acid
R - Chiral center for R/S system
R - functional group or side chain of atoms variable
R - Resistance
R - Ideal Gas Constant
R - Reactive
R - Redux
R - Röntgen unit
R - Rydberg Constant
R-# - Refrigerant number
Ra - Radium
RA - Retinoic Acid
RACHEL - Remote Acess Chemical Hazards Electronic Library
rad - radian
rad - Radiation - Absorbed Dose
Rad - Radioactive
Rb - Rubidium
RBA - Rutherford Backscattering Analysis
RBD - Refined, Bleached and Deodorized
RCS - Reactive Chemical Species
RDA - Recommended Daily Allowance
RDT - Recombinant DNA Technology
RDX - cyclotrimethylenetrinitramine
RDX - Research Department Explosive
RE - Rare Earth
Re - Rhenium
REACH - Registration, Evaluation, Authorization and restriction of Chemical substances
REE - Rare Earth Element
Ref - Reference
rem - Radiation Equivalent - Man
REM - Rare Earth Metal
REQ - Required
RER - Respiratory Exchange Ratio
RF - Radio Frequency
RF - Resonance Frequency
Rf - Rutherfordium
RFIC - Reagent-Free Ion Chromatography
RFM - Relative Formula Mass
RG - Rare Gas
Rg - Roentgenium
RH - Relative Humidity
Rh - Rhodium
RH - Rydberg Constant for Hydrogen
RHE - Reversible Hydrogen Electrode
RHIC - Relativistic Heavy Ion Collider
RHS - Right Hand Side
RI - Radical Initiator
RIO - Red IronOxide
RL - Reaction Level
RMM - Relative Molar Mass
RMS - Root Mean Square
Rn - Radon
RNA - RiboNucleic Acid
RNS - Reactive Nitrogen Species
RO - Red Oxide
RO - Reverse Osmosis
ROHS - Restriction Of Hazardous Substances
ROS - Reactive Oxygen Species
ROWPU - Reverse Osmosis Water Purification Unit
RPM - Revolutions Per Minute
RPT - Repeat
RSC - Royal Society of Chemistry
RT - Reverse Transcriptase
RT - Room Temperature
RT - Energy (Rydberg Constant x Temperature)
RTP - Room Temperature and Pressure
RTM - Read The Manual
RTSC - Room Temperature Super Conductor
Ru - Ruthenium

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Your Citation
Helmenstine, Anne Marie, Ph.D. "Chemistry Abbreviations Starting with the Letter R." ThoughtCo, Aug. 27, 2020, Helmenstine, Anne Marie, Ph.D. (2020, August 27). Chemistry Abbreviations Starting with the Letter R. Retrieved from Helmenstine, Anne Marie, Ph.D. "Chemistry Abbreviations Starting with the Letter R." ThoughtCo. (accessed May 30, 2023).