2-naphthyl mercaptan
Flavouring ingredient
  • BOC Sciences
    • BOC Sciences
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      91-60-1 2-Naphthalenethiol
  • Penta International
    • Penta International Corporation
      Chemistry innovation
      At Penta, our products and services help businesses do business better.
      For over 30 years, Penta Manufacturing Company has played a growing role in worldwide chemistry innovations and applications. As an industry leader, Penta continues to pioneer chemistry-based solutions for practically every area of commerce. Our products and expertise have helped fuel technical advances in dozens of commercial applications including flavoring, coloring, fragrances and chemical processes.
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      14-00750 2-NAPHTHALENETHIOL
  • Synerzine
    • Synerzine, Inc.
      Innovation. Customization. Aroma Ingredients.
      Synerzine is a leading supplier of flavor and fragrance ingredients.
      Synerzine expresses what we have grown to embody as an organization - the synergy and connection between raw ingredients, science, technology, and the final product. Our experienced team is passionate about bringing our customers high-quality innovative ingredients that they can trust.
      Building upon our 44 year history, the Synerzine team provides customers around the globe with convenient access to over 1200 high-quality aroma ingredients. We actively engage with customers to add a wide array of new products and services on a regular basis. Our aim is to delight every customer with our exceptional services, large product selection, customization and the highest quality and safety standards. We provide our customers with true value designed to help them bring their products to market faster.
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      W148 2-Naphthalenethiol
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      N0020 2-Naphthalenethiol >98.0%(GC)(T)
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CAS Number: 91-60-1Picture of molecule3D/inchi
ECHA EINECS - REACH Pre-Reg: 202-082-5
Nikkaji Web: J60.031H
Beilstein Number: 0636389
MDL: MFCD00004086
CoE Number: 2330
XlogP3: 3.70 (est)
Molecular Weight: 160.23876000
Formula: C10 H8 S
BioActivity Summary: listing
NMR Predictor: Predict (works with chrome, Edge or firefox)
Category: flavoring agents
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar: Search
Google Books: Search
Google Scholar: with word "volatile"Search
Google Scholar: with word "flavor"Search
Google Scholar: with word "odor"Search
Perfumer and Flavorist: Search
Google Patents: Search
US Patents: Search
EU Patents: Search
Pubchem Patents: Search
PubMed: Search
NCBI: Search
JECFA Food Flavoring: 531  2-naphthalenethiol
DG SANTE Food Flavourings: 12.033  naphthalene-2-thiol
FEMA Number: 3314 2-naphthalenethiol
FDA:No longer provide for the use of these seven synthetic flavoring substances
FDA Mainterm (SATF):91-60-1 ; 2-NAPHTHALENTHIOL
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Physical Properties:
Appearance: colorless crystals (est)
Assay: 97.00 to 100.00 % 
Food Chemicals Codex Listed: No
Melting Point: 79.00 to  83.00 °C. @ 760.00 mm Hg
Boiling Point: 286.00 to  288.00 °C. @ 760.00 mm Hg
Boiling Point: 210.00 to  211.00 °C. @ 100.00 mm Hg
Vapor Pressure: 0.005000 mmHg @ 25.00 °C. (est)
Flash Point: 273.00 °F. TCC ( 133.89 °C. )
logP (o/w): 3.511 (est)
Soluble in:
 dipropylene glycol
 water, slightly
 water, 34.4 mg/L @ 25 °C (est)
Insoluble in:
Similar Items: note
allyl mercaptan
amyl mercaptan
isoamyl mercaptan
sec-amyl mercaptan
tert-amyl mercaptan
benzyl mercaptan
buchu mercaptan
butyl mercaptan
isobutyl mercaptan
tert-butyl mercaptan
cetyl mercaptan
cyclohexyl mercaptan
cyclopentyl mercaptan
decyl mercaptan
dodecyl mercaptan
2-ethyl hexyl mercaptan
ethyl mercaptan
ethylene mercaptan
furfuryl mercaptan
grapefruit mercaptan
heptyl mercaptan
hexyl mercaptan
methyl mercaptan
nonyl mercaptan
octyl mercaptan
peach mercaptan
1-phenethyl mercaptan
2-phenethyl mercaptan
phenyl mercaptan
prenyl mercaptan
propyl mercaptan
isopropyl mercaptan
2-thienyl mercaptan
3-thienyl mercaptan
tridecyl mercaptan
undecyl mercaptan
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Organoleptic Properties:
Odor Type: sulfurous
 sulfurous  rubbery  meaty  roasted  woody  creamy  
Odor Description:
at 0.10 % in propylene glycol. 
sulfurous rubbery meaty roasted woody creamy artichoke
Luebke, William tgsc, (2007)
 sulfurous  oily  brown  brothy  meaty  rubbery  mushroom  
Odor Description:
Sulfureous, oily, brown, brothy, meaty, rubbery, mushroom-like
Mosciano, Gerard P&F 19, No. 1, 27, (1994)
Flavor Type: sulfurous
 sulfurous  meaty  brown  chicken roasted chicken  eggy  nutty  
Taste Description:
at 10.00 ppm.  
Sulfureous, meaty, brown, roasted, chicken, eggy with a slight nutty nuance
Mosciano, Gerard P&F 19, No. 1, 27, (1994)
Odor and/or flavor descriptions from others (if found).
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Cosmetic Information:
None found
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BOC Sciences
For experimental / research use only.
2-naphthyl mercaptan
Penta International
Santa Cruz Biotechnology
For experimental / research use only.
Sigma-Aldrich: Aldrich
For experimental / research use only.
2-Naphthalenethiol 99%
For experimental / research use only.
2-Naphthalenethiol >98.0%(GC)(T)
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Safety Information:
Preferred SDS: View
European information :
Most important hazard(s):
Xn - Harmful.
R 22 - Harmful if swallowed.
R 51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S 02 - Keep out of the reach of children.
S 20/21 - When using do not eat, drink or smoke.
S 24/25 - Avoid contact with skin and eyes.
S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S 37/39 - Wear suitable gloves and eye/face protection.
S 61 - Avoid release to the environment. Refer to special instructions/safety data sheet.
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
intraperitoneal-mouse LD50  200 mg/kg
National Technical Information Service. Vol. AD277-689

oral-mouse LD50  385 mg/kg
Drug and Chemical Toxicology. Vol. 3, Pg. 249, 1980.

Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
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Safety in Use Information:
Category: flavoring agents
Recommendation for 2-naphthyl mercaptan usage levels up to:
 not for fragrance use.
Use levels for FEMA GRAS flavoring substances on which the FEMA Expert Panel based its judgments that the substances are generally recognized as safe (GRAS).
The Expert Panel also publishes separate extensive reviews of scientific information on all FEMA GRAS flavoring substances and can be found at FEMA Flavor Ingredient Library
publication number: 5
Click here to view publication 5
 average usual ppmaverage maximum ppm
baked goods: -0.50000
beverages(nonalcoholic): --
beverages(alcoholic): --
breakfast cereal: -0.50000
cheese: --
chewing gum: --
condiments / relishes: --
confectionery froastings: --
egg products: --
fats / oils: --
fish products: --
frozen dairy: --
fruit ices: --
gelatins / puddings: --
granulated sugar: --
gravies: -0.50000
hard candy: --
imitation dairy: --
instant coffee / tea: --
jams / jellies: --
meat products: -0.50000
milk products: --
nut products: --
other grains: --
poultry: --
processed fruits: --
processed vegetables: --
reconstituted vegetables: --
seasonings / flavors: --
snack foods: --
soft candy: --
soups: -0.50000
sugar substitutes: --
sweet sauces: --
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Safety References:
EPI System: View
AIDS Citations: Search
Cancer Citations: Search
Toxicology Citations: Search
EPA Substance Registry Services (TSCA): 91-60-1
EPA ACToR: Toxicology Data
EPA Substance Registry Services (SRS): Registry
Laboratory Chemical Safety Summary : 7058
National Institute of Allergy and Infectious Diseases: Data
WISER: UN 3335
WGK Germany: 3
Chemidplus: 0000091601
RTECS: QK3930000 for cas# 91-60-1
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NIST Chemistry WebBook: Search Inchi
Canada Domestic Sub. List: 91-60-1
Pubchem (cid): 7058
Pubchem (sid): 134971580
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Other Information:
(IUPAC): Atomic Weights of the Elements 2011 (pdf)
Videos: The Periodic Table of Videos
tgsc: Atomic Weights use for this web site
(IUPAC): Periodic Table of the Elements
FDA Substances Added to Food (formerly EAFUS): View
HMDB (The Human Metabolome Database): HMDB29689
FooDB: FDB000875
Export Tariff Code: 2930.90.2900
ChemSpider: View
FAO: 2-Naphthalenethiol
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Potential Blenders and core components note
For Odor
 strawberry furanone methyl etherFL/FR
2-methyl-3-(methyl thio) pyrazineFL/FR
 trigonella foenum-graecum seed oil CO2 extractFL/FR
2-mercaptopropionic acidFL/FR
For Flavor
No flavor group found for these
4-acetyl-2-methyl pyrimidineFL
1,2-butane dithiolFL
(Z+E)-2,5-dimethyl-3-tetrahydrofuran thiolFL
2,5-dimethyl-3-thiofuroyl furanFL
2-ethyl-3-methyl thiopyrazineFL
 methyl dihydrofuran thiolFL
2-methyl-3-(methyl thio) pyrazineFL/FR
 thioacetic acidFL
3,7-dimethyl-2,6-octadien-1-yl cyclopropyl carboxamideFL
2-methyl-1-methyl thio-2-buteneFL
 brown flavorFL
2,6-dimethyl thiophenolFL
1,1-ethane dithiol 1% in ethanol 94.5% / ethyl acetate 4%FL
2-mercaptopropionic acidFL/FR
 methyl thiofuryl butanalFL
bis(2-methyl-3-furyl) disulfideFL
S-(2-methyl-3-furyl) ethane thioateFL
2-methyl-3-tetrahydrofuran thiolFL
 phenyl mercaptanFL
 propyl 2-mercaptopropionateFL
 pyrazinyl ethane thiolFL
2-pyridinyl methane thiolFL
 strawberry furanone methyl etherFL/FR
2-ethyl benzene thiolFL
 trigonella foenum-graecum seed oil CO2 extractFL/FR
 methyl 2-methyl-3-furyl disulfideFL
 roasted butanolFL
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Potential Uses:
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Occurrence (nature, food, other): note
 not found in nature
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2-naphthalene thiol
beta-naphthalene thiol
2-naphthyl hydrosulfide
beta-naphthyl mercaptan
2-naphthyl thiol
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