Material Safety Data
Naphthalene, Scintillation Grade, 99+%
MSDS Name: Naphthalene, Scintillation Grade, 99+%
Section 1 - Chemical Product and Company
Catalog Numbers: AC180200000, AC180200010, AC180200050, AC180202500
Synonyms: Coal tar camphor, Naphthalin, Napthalinium, Naphthene;
Albocarbon; Moth Balls
Acros Organics N.V.
One Reagent Lane
Fair Lawn, NJ 07410
For information in North America,
For emergencies in the US, call CHEMTREC:
Section 2 -
Composition, Information on Ingredients
Risk Phrases: 20/21/22
Section 3 - Hazards
Appearance: white. Flash Point: 174 deg F. Warning! May
cause allergic skin reaction. May cause liver and kidney damage. May cause blood
abnormalities. Hygroscopic. Harmful if swallowed. May be fatal if inhaled.
Causes eye and skin irritation. Causes digestive and respiratory tract
irritation. May cause fetal effects based upon animal studies. Flammable solid.
May be harmful if absorbed through the skin.
Blood, kidneys, central nervous system, liver, eyes, skin.
Potential Health Effects
Eye: Naphthalene is an eye irritant. The vapor
causes eye irritation at 15 ppm. Eye contact with the solid material may result
in conjunctivitis, superficial injury to the cornea, diminished visual acuity,
and other effects. It may cause cataracts.
mild skin irritation. May be absorbed through the skin in harmful amounts. May
cause skin sensitization, an allergic reaction, which becomes evident upon
re-exposure to this material.
Ingestion: Harmful if
swallowed. May cause liver and kidney damage. May cause methemoglobinemia,
cyanosis (bluish discoloration of skin due to deficient oxygenation of the
blood), convulsions, and death. May cause severe digestive tract irritation with
abdominal pain, nausea, vomiting and diarrhea. Ingestion of large quantities may
cause severe hemolytic anemia and hemoglobinuria.
Inhalation: May be fatal if inhaled. Causes respiratory
tract irritation. May cause salivation, nausea, vomiting, abdominal pain, fever,
and labored breathing. Readily absorbed when inhaled. Material volatilizes at
Chronic: Prolonged or repeated skin
contact may cause dermatitis. May cause liver and kidney damage. May cause
anemia and other blood cell abnormalities. Animal studies have reported that
fetal effects/abnormalities may occur when maternal toxicity is seen. Effects
may be delayed. Chronic exposure may cause lung damage. Laboratory experiments
have resulted in mutagenic effects. Chronic exposure may cause corneal injury,
optical neuritis, blurred vision, and possible cataract formation. Chronic
inhalation, skin absorption or ingestion of naphthalene have caused severe
Section 4 - First Aid
Eyes: Immediately flush eyes with plenty of water
for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get
Skin: Get medical aid. Immediately flush skin
with plenty of soap and water for at least 15 minutes while removing
contaminated clothing and shoes. Wash clothing before reuse.
Ingestion: If swallowed, do not induce vomiting unless
directed to do so by medical personnel. Never give anything by mouth to an
unconscious person. Get medical aid.
from exposure to fresh air immediately. If breathing is difficult, give oxygen.
Get medical aid. Do NOT use mouth-to-mouth resuscitation. If breathing has
ceased apply artificial respiration using oxygen and a suitable mechanical
device such as a bag and a mask.
Notes to Physician:
Individuals with a glucose-6-phosphate dehyrogenase deficiency are
hypersensitive to the effects of naphthalene.
Section 5 - Fire
Information: As in any fire, wear a self-contained breathing apparatus
in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective
gear. Water runoff can cause environmental damage. Dike and collect water used
to fight fire. Use water spray to keep fire-exposed containers cool. Dust can be
an explosion hazard when exposed to heat or flame. May be ignited by friction,
heat, sparks, or flame. May re-ignite after fire is extinguished. Containers may
explode when heated.
Extinguishing Media: Use dry sand or
earth to smother fire. Water or foam may cause frothing. Cool containers with
flooding quantities of water until well after fire is out. Use dry chemical,
carbon dioxide, or appropriate foam.
Section 6 -
Accidental Release Measures
Information: Use proper personal protective equipment as indicated in
Spills/Leaks: Avoid runoff into storm sewers and
ditches which lead to waterways. Clean up spills immediately, observing
precautions in the Protective Equipment section. Scoop up with a nonsparking
tool, then place into a suitable container for disposal. Avoid generating dusty
conditions. Remove all sources of ignition.
Section 7 - Handling
Handling: Wash thoroughly after handling. Remove
contaminated clothing and wash before reuse. Minimize dust generation and
accumulation. Avoid contact with eyes, skin, and clothing. Do not breathe dust,
vapor, mist, or gas. Keep container tightly closed. Do not ingest or inhale. Use
only in a chemical fume hood.
Storage: Keep away from
sources of ignition. Store in a tightly closed container. Store in a cool, dry,
well-ventilated area away from incompatible substances. Store protected from
moisture. Separate from oxidizing materials.
Section 8 - Exposure
Controls, Personal Protection
Controls: Use explosion-proof ventilation equipment. Facilities storing
or utilizing this material should be equipped with an eyewash facility and a
safety shower. Use only under a chemical fume hood.
||10 ppm TWA; 15 ppm STEL; skin - potential for cutaneous
||10 ppm TWA; 50 mg/m3 TWA 250 ppm IDLH
||10 ppm TWA; 50 mg/m3
OSHA Vacated PELs:
Naphthalene: 10 ppm TWA; 50 mg/m3 TWA; 15 ppm STEL; 75 mg/m3 STEL
Personal Protective Equipment
Wear chemical goggles.
Skin: Wear appropriate protective
gloves to prevent skin exposure.
Clothing: Wear appropriate
protective clothing to prevent skin exposure.
respiratory protection program that meets OSHA's 29 CFR §1910.134 and ANSI Z88.2
requirements or European Standard EN 149 must be followed whenever workplace
conditions warrant a respirator's use.
Section 9 - Physical
and Chemical Properties
pH: Not available.
Vapor Pressure: 0.054 mm
Vapor Density: 4.42 (air=1)
Rate:<1.0 (butyl acetate=1)
Viscosity: Not available.
Boiling Point: 218 deg C
Freezing/Melting Point:80 - 82
Autoignition Temperature: 979 deg F ( 526.11 deg C)
Flash Point: 174 deg F ( 78.89 deg C)
Temperature:540 deg C
NFPA Rating: (estimated) Health: 2;
Flammability: 2; Reactivity: 0
Explosion Limits, Lower:0.90 vol %
Upper: 5.90 vol %
Section 10 -
Stability and Reactivity
Stability: Stable at room temperature in closed containers under normal
storage and handling conditions. Volatile in steam.
Avoid: Incompatible materials, ignition sources, dust generation, moisture,
excess heat, exposure to moist air or water, steam.
with Other Materials: Oxidizing agents, chromium trioxide, chromic
anhydride, dinitrogen pentaoxide, mineral acids, moisture, strong alkalies,
alumiunum chloride + benzoyl chloride.
Products: Carbon monoxide, irritating and toxic fumes and gases, carbon
Hazardous Polymerization: Will not occur.
Section 11 -
CAS# 91-20-3: QJ0525000
Draize test, rabbit, eye: 100 mg Mild;
Inhalation, rat: LC50 =
Oral, mouse: LD50 = 533 mg/kg;
Oral, rat: LD50 = 490
Skin, rabbit: LD50 = >20 gm/kg;
Skin, rat: LD50 = >2500
- Not Classifiable as a Human Carcinogen
rat: TDLo = 3500 mg/kg/12W-I (Tumorigenic - eq uivocal tumorigenic agent by
RTECS criteria - Blood - lymp homa, including Hodgkin's disease and Reproductive
- Tum origenic effects - uterine tumors).; Inhalation, mouse: TCLo = 30
ppm/6H/2Y-I (Tumorigenic - neoplastic by RTECS criteria - Lungs, Thorax, or
Respiration - tumors).
Teratogenicity: Naphthalene and its
metabolites have been reported to cross the human placenta in amounts sufficient
to cause fetal toxicity. Oral, rat: TDLo = 4500 mg/kg (female 6-15 day(s) after
conception) Effects on Embryo or Fetus - fetotoxicity (except death, e.g.,
stunted fetus) and Specific Developmental Abnormalities - other developmental
abnormalities.; Intraperitoneal, rat: TDLo = 5925 mg/kg (female 1-15 day(s)
after conception) Specific Developmental Abnormalities - musculoskeletal system
and cardiovascular (circulatory) system.
Reproductive Effects: No
Neurotoxicity: No information available.
Mutagenicity: Micronucleus Test: Human, Lymphocyte = 30 mg/L.;
Cytogenetic Analysis: Hamster, Ovary = 30 mg/L.; Sister Chromatid Exchange:
Hamster, Ovary = 15 mg/L.
Other Studies: Standard Draize Test:
Administration onto the skin (rabbit) = 495 mg (Mild).; Standard Draize Test:
Administration int o the eye (rabbit) = 100 mg (Mild).
Section 12 -
Fish: Rainbow trout: LC50 = 1.60 mg/L; 96 Hr; Flow-through at 15 C Fathead
Minnow: LC50 = 6.14 mg/L; 96 Hr; Flow-through at 24.5 C flea Daphnia: EC50 =
2.16-8.60 mg/L; 48 Hr; Unspecified ria: Phytobacterium phosphoreum: EC50 = 0.93
mg/L; 30 min; Microtox test Pink salmon: LC50 = 1.24 mg/L; 96 Hr; (fry) Static
bioassay at 12°C Releases into water are lost due to volatilization, photolysis,
adsorption, and biodegradation. The principal loss processes will depend on
local conditions but half-lives can be expected to range from a couple of days
to a few months. When adsorbed to sediment, biodegradation occurs much more
rapidly than in the overlying water column. When spilled on land, naphthalene is
adsorbed moderately to soil and undergoes biodegradation. However, in some cases
it will appear in the groundwater where biodegradation still may occur if
conditions are aerobic.
Environmental: Bioconcentration occurs to a
moderate extent but since depuration and metabolism readily proceed in aquatic
organisms, this is a short term problem. transport and disposal of fuel oil,
coal tar, etc. In the atmosphere, naphthalene rapidly photodegrades (half-life
3-8 hr). Naphthalene shows low biological oxygen demand and is expected to cause
little O2 depletion in aquatic systems.
Physical: Log P (oct) = 3.01
Other: Harmful to aquatic life in very low concentrations.
Section 13 - Disposal
Chemical waste generators
must determine whether a discarded chemical is classified as a hazardous waste.
US EPA guidelines for the classification determination are listed in 40 CFR
Parts 261.3. Additionally, waste generators must consult state and local
hazardous waste regulations to ensure complete and accurate classification.
RCRA P-Series: None listed.
RCRA U-Series: CAS# 91-20-3:
waste number U165.
Section 14 -
Section 15 -
CAS# 91-20-3 is listed on the TSCA
Health & Safety Reporting List
Effective Date: June 1, 1987; Sunset Date: June 1, 1997
None of the chemicals in this product are under a Chemical Test
None of the chemicals are listed under TSCA
TSCA Significant New Use Rule
None of the chemicals
in this material have a SNUR under TSCA.
CAS# 91-20-3: final RQ = 100 pounds (45.4 kg)
None of the chemicals in this product have a TPQ.
CAS # 91-20-3: acute, chronic, flammable.
This material contains Naphthalene (CAS# 91-20-3, 99%),which is
subject to the reporting requirements of Section 313 of SARA Title III and 40
CFR Part 373.
Clean Air Act:
CAS# 91-20-3 is listed as a hazardous
air pollutant (HAP). This material does not contain any Class 1 Ozone depletors.
This material does not contain any Class 2 Ozone depletors.
CAS# 91-20-3 is listed as a Hazardous Substance under the CWA. CAS#
91-20-3 is listed as a Priority Pollutant under the Clean Water Act. CAS#
91-20-3 is listed as a Toxic Pollutant under the Clean Water Act.
None of the chemicals in this product are considered highly
hazardous by OSHA.
CAS# 91-20-3 can be found on the
following state right to know lists: California, New Jersey, Florida,
Pennsylvania, Minnesota, Massachusetts.
California No Significant Risk
Level: None of the chemicals in this product are listed.
European Labeling in
Accordance with EC Directives
R 20/21/22 Harmful by inhalation, in contact with
S 36/37 Wear suitable protective
WGK (Water Danger/Protection)
CAS# 91-20-3 is listed on Canada's DSL List.
CAS# 91-20-3 is listed on Canada's DSL List.
This product has a WHMIS
classification of B4, D1A, D2A.
CAS# 91-20-3 is listed on Canada's
Ingredient Disclosure List.
CAS# 91-20-3: OEL-ARAB
Republic of Egypt:TWA 10 ppm (50 mg/m3) OEL-
AUSTRALIA:TWA 10 ppm (50
mg/m3);STEL 15 ppm (75 mg/m3) OEL-BELGIUM:TW
A 10 ppm (52 mg/m3);STEL 15 ppm
(79 mg/m3) OEL-DENMARK:TWA 10 ppm (50
mg/m3) OEL-FINLAND:TWA 10 ppm (50
mg/m3);STEL 20 ppm (10 mg/m3) OEL
-FRANCE:TWA 10 ppm (50 mg/m3)
OEL-GERMANY:TWA 10 ppm (50 mg/m3) OEL-
HUNGARY:TWA 40 mg/m3;STEL 80
mg/m3;Skin OEL-THE NETHERLANDS:TWA 10 pp
m (50 mg/m3) OEL-THE PHILIPPINES:TWA
10 ppm (50 mg/m3) OEL-POLAND:TW
A 20 mg/m3 OEL-RUSSIA:STEL 20 mg/m3
OEL-SWITZERLAND:TWA 10 ppm (50 m
g/m3) OEL-UNITED KINGDOM:TWA 10 ppm (50
mg/m3);STEL 15 ppm (75 mg/m3)
OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check
ACGIH TLV OEL IN NEW
ZEALAND, SINGAPORE, VIETNAM check ACGI TLV
Section 16 -
MSDS Creation Date:
Revision #3 Date: 10/10/2000
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