Reagent Alcohol

anhydrous, ≤0.005% water

Ethyl alcohol, Reagent alcohol, Ethanol, denatured alcohol, RGA
CAS Number:
MDL number:
PubChem Substance ID:
Pricing and availability is not currently available.

Quality Level



vapor density

1.59 (vs air)




5% isopropyl alcohol as denaturant
5% methyl alcohol as denaturant

expl. lim.

3.1-27.7 % (lit.)




≤0.005% water

evapn. residue



78 °C (lit.)


−130 °C



InChI key


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General description

Reagent alcohol (denatured alcohol) is ethanol that has been denatured by adding additives like methanol and isopropyl alcohol. The addition of these toxic additives makes it non-consumable. It is a constituent of hairspray, spray disinfectants and cosmetics. It is employed in histological and cytological procedures such as staining, slide preparation and also as a fixative. A study reports the use of reagent alcohol as a solvent for the preservation of euthanized sea cucumbers. This is an anhydrous grade solvent with extremely low water content and residue levels making it highly useful for processes that require very low water levels.


1, 4, 4×4 L in aluminum bottle


95 parts of specially denatured ethyl alcohol 3A, 200 proof, with 5 parts of isopropyl alcohol. Final concentrations are ~ 90% ethanol, ~ 5% methanol and ~ 5% isopropanol.

Signal Word


Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


UN1170 - class 3 - PG 2 - Ethanol, solution

WGK Germany


Flash Point(F)

48.2 °F - closed cup

Flash Point(C)

9 °C - closed cup

Certificate of Analysis
Certificate of Origin
Recommendations on the use of alcohols for preservation of ant specimens (Hymenoptera, Formicidae).
King JR and Porter SD.
Insectes Sociaux, 51(2), 197-202 (2004)
Rocio Gómez-Cansino et al.
Evidence-based complementary and alternative medicine : eCAM, 2015, 183036-183036 (2015-05-20)
The extracts of 14 Julianaceae and 5 Clusiaceae species growing in Mexico were tested in vitro (50 µg/mL) against Mycobacterium tuberculosis H37Rv and HIV reverse transcriptase (HIV-RT). The Julianaceae bark and leaf extracts inhibited M. tuberculosis (>84.67%) and HIV-RT (<49.89%). The...
The uptake of dissolved organic material by the sea cucumber Parastichopus californicus (Stimpson) and its potential role in visceral regeneration.
Brothers CJ, et al.
Journal of Experimental Marine Biology and Ecology, 469, 69-75 (2015)
Surrogate alcohol: what do we know and where do we go?
Lachenmeier DW, et al.
Alcoholism, Clinical and Experimental Research, 31(10), 1613-1624 (2007)
Zeljka Korade et al.
Biological psychiatry, 75(3), 215-222 (2013-07-31)
Smith-Lemli-Opitz syndrome (SLOS) is an inborn error of cholesterol biosynthesis characterized by diminished cholesterol and increased 7-dehydrocholesterol (7-DHC) levels. 7-Dehydrocholesterol is highly reactive, giving rise to biologically active oxysterols. 7-DHC-derived oxysterols were measured in fibroblasts from SLOS patients and an...

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