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Home> Hot Product Listed 1   > 1-Naphthol


CAS No.:90-15-3
Molecular Weight:144.17
Molecular Formula:C10H8O (Products with the same molecular formula)
MOL File:90-15-3.mol
Names and Identifiers

Durafur developer D1-Naphthol C.I. 76605 Furro ER 1-Naphthol 97+ %a-Naphthol 1-naphthol (alpha) Oxidation base 33 1-Naphthalenol alpha-Naphthol 1-Hydroxynaphthalene Fourrine 99

Canonical Smiles
pale grey to brown solid
Melting Point
Boiling Point
Refractive Index
Flash Point
insoluble in water
insoluble in water
Yellow monoclinic needles from water
Colorless prisms (from toluene)
Stable, but air and light sensitive - store under inert gas. Incompatible with strong bases, strong oxidizing agents.
HS Code
Storage temp
Store in dark!
Spectral properties
Index of refraction: 1.6224 at 99 deg C/D
MAX ABSORPTION: 292 NM, 308 NM, 322 NM (LOG E= 3.67, 3.52, 3.31)
IR: 6106 (Coblentz Society Spectral Collection)
UV: 2045 (Sadtler Research Laboratories Spectral Collection)
NMR: 5 (Sadtler Research Laboratories Spectral Collection)
MASS: 52368 (NIST/EPA/MSDC Mass Spectral Database, 1990 version); 788 (Atlas of Mass Spectral Data, John Wiley $ Sons, New York)
Safety and Handling
Hazard Codes
Risk Statements
Safety Statements

Hazard Codes:?HarmfulXn
Risk Statements: 21/22-37/38-41?
R20/21:Harmful by inhalation and in contact with skin.?
R37/38:Irritating to respiratory system and skin.?
R41:Risk of serious damage to the eyes.
Safety Statements: 22-26-37/39-2?
S22:Do not breathe dust.?
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.?
S37/39:Wear suitable gloves and eye/face protection.?
S2:Keep out of the reach of children.
RIDADR: UN 2811 6.1/PG 3
WGK Germany: 1
RTECS: QL2800000
F: 8-23
HazardClass: 6.1
PackingGroup: III
HS Code: 29071510
Hazardous Substances Data: 90-15-3(Hazardous Substances Data)
Poison by ingestion and intraperitoneal routes. Moderately toxic by skin contact. An experimental teratogen. Experimental reproductive effects. A severe eye and skin irritant. Mutation data reported. Ingestion of large amounts can cause nephritis, vomiting, diarrhea, circulatory collapse, anemia, convulsions, and death. Can cause kidney irritation and injury to cornea and lens of the eye. Combustible when exposed to heat or flame. When heated to decomposition it emits acrid smoke and irritating fumes.

Air & Light Sensitive
UN 1759
Fire Potential
Combustible when exposed to heat or flame.

?1-Naphthol (CAS NO.90-15-3) is also named as 1-Hydroxynaphthalene ; 1-Naphthalenol ; AI3-00106 ; Basf Ursol ERN ; C.I. 76605 ; C.I. Oxidation Base 33 ; CCRIS 1172 ; CI 76605 ; CI Oxidation Base 33 ; Durafur developer D ;?Fouramine ERN ; Fourrine 99 ; Fourrine ERN ; Furro ER ; HSDB 2650 ; NSC 9586 ; Nako TRB ; Tertral ERN ; Ursol ERN ; Zoba ERN ; alpha-Hydroxynaphthalene ; alpha-Naphthol?.?1-Naphthol (CAS NO.90-15-3) is pale grey to brown solid. It is?soluble in alcohol, ether, benzene, chloroform and alkali solution, insoluble in water. It is stable, but air and light sensitive. It store under inert gas.?1-Naphthol is incompatible with strong bases, strong oxidizing agents.

Octanol/Water Partition Coefficient
log Kow = 2.85

Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.

Disposal Methods
SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.
Reach Info
This substance has been officially registered by enterprises.
ECHA (EU chemicals Management Agency) published the completed registration file as follows:
Completed registration file:
Registered as ubmitted Total tonnage band  
FULL JOINT 10_100 view >
Registered companies:
Registrant / Supplier details Latest dossier received
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According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017


1.1 GHS Product identifier

Product name 1-naphthol

1.2 Other means of identification

Product number -
Other names 1-hydroxynaphthalene

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Intermediates
Uses advised against no data available

1.4 Supplier's details


1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

2.Hazard identification

2.1 Classification of the substance or mixture

Acute toxicity - Oral, Category 4

Acute toxicity - Dermal, Category 4

Skin irritation, Category 2

Serious eye damage, Category 1

Specific target organ toxicity \u2013 single exposure, Category 3

2.2 GHS label elements, including precautionary statements

Signal word


Hazard statement(s)

H302 Harmful if swallowed

H312 Harmful in contact with skin

H315 Causes skin irritation

H318 Causes serious eye damage

H335 May cause respiratory irritation

Precautionary statement(s)

P264 Wash ... thoroughly after handling.

P270 Do not eat, drink or smoke when using this product.

P280 Wear protective gloves/protective clothing/eye protection/face protection.

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

P271 Use only outdoors or in a well-ventilated area.


P301+P312 IF SWALLOWED: Call a POISON CENTER/doctor/\u2026if you feel unwell.

P330 Rinse mouth.

P302+P352 IF ON SKIN: Wash with plenty of water/...

P312 Call a POISON CENTER/doctor/\u2026if you feel unwell.

P321 Specific treatment (see ... on this label).

P362+P364 Take off contaminated clothing and wash it before reuse.

P332+P313 If skin irritation occurs: Get medical advice/attention.

P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

P310 Immediately call a POISON CENTER/doctor/\u2026

P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.


P403+P233 Store in a well-ventilated place. Keep container tightly closed.

P405 Store locked up.


P501 Dispose of contents/container to ...

2.3 Other hazards which do not result in classification


3.Composition/information on ingredients

3.1 Substances

Chemical name Common names and synonyms CAS number EC number Concentration
1-naphthol 1-naphthol 90-15-3 none 100%

4.First-aid measures

4.1 Description of necessary first-aid measures

General advice

Consult a physician. Show this safety data sheet to the doctor in attendance.

If inhaled

If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician.

In case of skin contact

Wash off with soap and plenty of water. Consult a physician.

In case of eye contact

Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.

If swallowed

Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

4.2 Most important symptoms/effects, acute and delayed

no data available

4.3 Indication of immediate medical attention and special treatment needed, if necessary

Basic treatment: Establish a patent airway. Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . For contamination, flush eyes immediately with water. Irrigate each eye continuously with normal saline during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 mL/kg up to 200 mL of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool. Administer activated charcoal ... . /Ketones and related compounds/

5.Fire-fighting measures

5.1 Extinguishing media

Suitable extinguishing media

Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.

5.2 Specific hazards arising from the chemical

no data available

5.3 Special protective actions for fire-fighters

Wear self-contained breathing apparatus for firefighting if necessary.

6.Accidental release measures

6.1 Personal precautions, protective equipment and emergency procedures

Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8.

6.2 Environmental precautions

Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided.

6.3 Methods and materials for containment and cleaning up

Pick up and arrange disposal. Sweep up and shovel. Keep in suitable, closed containers for disposal.

7.Handling and storage

7.1 Precautions for safe handling

Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2.

7.2 Conditions for safe storage, including any incompatibilities

Keep in dark places.

8.Exposure controls/personal protection

8.1 Control parameters

Occupational Exposure limit values

no data available

Biological limit values

no data available

8.2 Appropriate engineering controls

Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.

8.3 Individual protection measures, such as personal protective equipment (PPE)

Eye/face protection

Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).

Skin protection

Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.

Respiratory protection

Wear dust mask when handling large quantities.

Thermal hazards

no data available

9.Physical and chemical properties

Physical state pale grey to brown solid
Colour Yellow monoclinic needles from water
Odour Phenolic odor
Melting point/ freezing point 342\u00b0C(lit.)
Boiling point or initial boiling point and boiling range 278-280\u00b0C(lit.)
Flammability no data available
Lower and upper explosion limit / flammability limit no data available
Flash point 125\u00b0C
Auto-ignition temperature 541.67\u00b0C
Decomposition temperature no data available
pH no data available
Kinematic viscosity no data available
Solubility In water, 866 mg/L at 25\u00b0C
Partition coefficient n-octanol/water (log value) log Kow = 2.85
Vapour pressure 1.7 mm Hg at 110\u00b0C (2.74X10-4 mm Hg at 25\u00b0C) /extrapolated to solid-phase/
Density and/or relative density 1.224
Relative vapour density 4.5 (120 \u00b0C, vs air)
Particle characteristics no data available

10.Stability and reactivity

10.1 Reactivity

no data available

10.2 Chemical stability

Water stability: stable at pH < or =6.5; increased transformation with increased pH. /from table/

10.3 Possibility of hazardous reactions

Combustible when exposed to heat or flame.

10.4 Conditions to avoid

no data available

10.5 Incompatible materials

no data available

10.6 Hazardous decomposition products

When heated to decomposition it emits acrid smoke and irritating fumes.

11.Toxicological information

Acute toxicity

  • Oral: LD50 Rat oral 2.59 g/kg
  • Inhalation: LC50 Rat (female Wistar) inhalation >97 mg/cu m/4 hr
  • Dermal: no data available

Skin corrosion/irritation

no data available

Serious eye damage/irritation

no data available

Respiratory or skin sensitization

no data available

Germ cell mutagenicity

no data available


no data available

Reproductive toxicity

no data available

STOT-single exposure

no data available

STOT-repeated exposure

no data available

Aspiration hazard

no data available

12.Ecological information

12.1 Toxicity

  • Toxicity to fish: LC50 Pimephales promelas (Fathead minnow, weight 114 mg) 7.01 mg/L/24 hr (95% confidence limit: 6.74-7.30 mg/L); flow-through bioassay, dissolved oxygen 7.4 (4.6-8.8) mg/L, water hardness 44.9 (42.4-46.6) mg/L as CaCO3, pH 6.9-7.7, alkalinity 42.9 (39.6-61.4) mg/L CaCO3, temp: 26.4 +/- 1.4\u00b0C, Purity 99%+
  • Toxicity to daphnia and other aquatic invertebrates: EC50 Daphnia magna (Water flea; immobilization) 3.53 mg/L/48 hr (95% confidence limit: 3.2-5.6 mg/L); static /95.7% purity
  • Toxicity to algae: no data available
  • Toxicity to microorganisms: no data available

12.2 Persistence and degradability

AEROBIC: 1-Naphthol was biodegradable in screening tests(1-5). It proved to be readily biodegradable in a respiratory biodegradation test (24 participating laboratories) similar to the MITI test but using an activated sludge inoculum(3). The median lag time was 3 days and a mean BOD of 60% of theoretical was achieved in 10 days thereafter; 82% of dissolved organic carbon (DOC) was removed(3). In a 2-week biodegradation screening test (MITI test) using 1-naphthol (30 ppm) and an activated sludge inoculum, 96% of theoretical BOD was removed(1). 92.1% of the chemical oxygen demand (COD) was removed in 24 hr in a degradability test using an acclimated activated sludge inoculum(2). In another 5-BOD test, 66-69% of the theoretical BOD was consumed(5).

12.3 Bioaccumulative potential

An estimated BCF of 31 was calculated for 1-naphthol(SRC), using a log Kow of 2.85(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is moderate(SRC). There is evidence that 1-naphthol is rapidly transformed in M edulis(4). Experiments conducted with the marine gastropod, Littorina littorea, show that the loss of 1-naphthol in seawater was greater when animals were present in the experimental tanks(4).

12.4 Mobility in soil

Batch equilibrium adsorption studies of 1-naphthol were performed using 16 soils and sediments(1). The Koc average value using ten of these soils was 522 which was in good agreement with that predicted from the octanol-water partition coefficient (hydrophobic adsorption), 432(1); the other six soils and sediments yielded Koc value that were higher (1645, 1733, 2102, 2700, 4198, and 15,618) with the highest value (15, 618) measured in a sediment soil (0.11% organic carbon)(1); it was found that for 1-naphthol, hydrophobic adsorption is dominant only when the ratio of percent organic carbon to percent montorillonite exceeds 0.1% and that adsorption of 1-naphthol is a function of soil and sediment properties(1). According to a classification scheme(2), a Koc value of 522 (average) suggests that 1-naphthol is expected to have low mobility in soil(SRC).

12.5 Other adverse effects

no data available

13.Disposal considerations

13.1 Disposal methods


The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.

Contaminated packaging

Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.

14.Transport information

14.1 UN Number

ADR/RID: UN2811 IMDG: UN2811 IATA: UN2811

14.2 UN Proper Shipping Name


14.3 Transport hazard class(es)

ADR/RID: 6.1 IMDG: 6.1 IATA: 6.1

14.4 Packing group, if applicable


14.5 Environmental hazards

ADR/RID: no IMDG: no IATA: no

14.6 Special precautions for user

no data available

14.7 Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code

no data available

15.Regulatory information

15.1 Safety, health and environmental regulations specific for the product in question

Chemical name Common names and synonyms CAS number EC number
1-naphthol 1-naphthol 90-15-3 none
European Inventory of Existing Commercial Chemical Substances (EINECS) Listed.
EC Inventory Listed.
United States Toxic Substances Control Act (TSCA) Inventory Listed.
China Catalog of Hazardous chemicals 2015 Not Listed.
New Zealand Inventory of Chemicals (NZIoC) Listed.
Philippines Inventory of Chemicals and Chemical Substances (PICCS) Listed.
Vietnam National Chemical Inventory Listed.
Chinese Chemical Inventory of Existing Chemical Substances (China IECSC) Listed.

16.Other information

Information on revision

Creation Date Aug 12, 2017
Revision Date Aug 12, 2017

Abbreviations and acronyms

  • CAS: Chemical Abstracts Service
  • ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
  • RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
  • IMDG: International Maritime Dangerous Goods
  • IATA: International Air Transportation Association
  • TWA: Time Weighted Average
  • STEL: Short term exposure limit
  • LC50: Lethal Concentration 50%
  • LD50: Lethal Dose 50%
  • EC50: Effective Concentration 50%


  • IPCS - The International Chemical Safety Cards (ICSC), website:
  • HSDB - Hazardous Substances Data Bank, website:
  • IARC - International Agency for Research on Cancer, website:
  • eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website:
  • CAMEO Chemicals, website:
  • ChemIDplus, website:
  • ERG - Emergency Response Guidebook by U.S. Department of Transportation, website:
  • Germany GESTIS-database on hazard substance, website:
  • ECHA - European Chemicals Agency, website:

Disclaimer: The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. We as supplier shall not be held liable for any damage resulting from handling or from contact with the above product.

Precursor and Product
Computational chemical data

Molecular Weight:144.16992 [g/mol]
Molecular Formula:C10H8O
H-Bond Donor:1
H-Bond Acceptor:1
Rotatable Bond Count:0
Tautomer Count:2
Exact Mass:144.057515
MonoIsotopic Mass:144.057515
Topological Polar Surface Area:20.2
Heavy Atom Count:11
Formal Charge:0
Isotope Atom Count:0
Defined Atom Stereocenter Count:0
Undefined Atom Stereocenter Count:0
Defined Bond Stereocenter Count:0
Undefined Bond Stereocenter Count:0
Covalently-Bonded Unit Count:1
Feature 3D Donor Count:1
Feature 3D Ring Count:2
Effective Rotor Count:0
Conformer Sampling RMSD:0.4
CID Conformer Count:1

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