1,1,4,4-Tetramethyl-1,2,3,4-tetrahydronaphthalene

Modify Date: 2024-01-08 09:52:25

1,1,4,4-Tetramethyl-1,2,3,4-tetrahydronaphthalene Structure
1,1,4,4-Tetramethyl-1,2,3,4-tetrahydronaphthalene structure
Common Name 1,1,4,4-Tetramethyl-1,2,3,4-tetrahydronaphthalene
CAS Number 6683-46-1 Molecular Weight 188.309
Density 0.9±0.1 g/cm3 Boiling Point 250.6±10.0 °C at 760 mmHg
Molecular Formula C14H20 Melting Point 115-120°C
MSDS N/A Flash Point 101.2±7.1 °C

 Names

Name 1,1,4,4-Tetramethyl-1,2,3,4-tetrahydronaphthalene
Synonym More Synonyms

 Chemical & Physical Properties

Density 0.9±0.1 g/cm3
Boiling Point 250.6±10.0 °C at 760 mmHg
Melting Point 115-120°C
Molecular Formula C14H20
Molecular Weight 188.309
Flash Point 101.2±7.1 °C
Exact Mass 188.156494
LogP 5.97
Vapour Pressure 0.0±0.2 mmHg at 25°C
Index of Refraction 1.491

 MSDS

Name: 1 1 4 4-tetramethyl-1 2 3 4-tetrahydronaphthaline tech Material Safety Data Sheet
Synonym:
CAS: 6683-46-1
Section 1 - Chemical Product MSDS Name:1 1 4 4-tetramethyl-1 2 3 4-tetrahydronaphthaline tech Material Safety Data Sheet
Synonym:

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
6683-46-1 1,1,4,4-tetramethyl-1,2,3,4-tetrahydro TECH 229-723-1
Hazard Symbols: XN
Risk Phrases: 20/21 36/37/38

Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Harmful by inhalation and in contact with skin. Irritating to eyes, respiratory system and skin.
Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation. Harmful if absorbed through the skin.
Ingestion:
May cause irritation of the digestive tract.
Inhalation:
Harmful if inhaled. Causes respiratory tract irritation.
Chronic:
Not available.

Section 4 - FIRST AID MEASURES
Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Get medical aid. Wash mouth out with water.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or chemical foam.

Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container.

Section 7 - HANDLING and STORAGE
Handling:
Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Storage:
Store in a cool, dry place. Store in a tightly closed container.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 6683-46-1: Personal Protective Equipment Eyes: Not available.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES

Physical State: Liquid
Color: Pale yellow
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 93 - 95 deg C @6mm Hg
Freezing/Melting Point: Not available.
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density:
Molecular Formula: C14H20
Molecular Weight: 188.32

Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials.
Incompatibilities with Other Materials:
Strong oxidizing agents, strong acids, strong bases, acid chlorides.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide.
Hazardous Polymerization: Has not been reported.

Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 6683-46-1 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
1,1,4,4-tetramethyl-1,2,3,4-tetrahydronaphthaline, tech - Not listed by ACGIH, IARC, or NTP.

Section 12 - ECOLOGICAL INFORMATION


Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION

IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.

Section 15 - REGULATORY INFORMATION

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN
Risk Phrases:
R 20/21 Harmful by inhalation and in contact with
skin.
R 36/37/38 Irritating to eyes, respiratory system
and skin.
Safety Phrases:
S 23 Do not inhale gas/fumes/vapour/spray.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
WGK (Water Danger/Protection)
CAS# 6683-46-1: No information available.
Canada
CAS# 6683-46-1 is listed on Canada's DSL List.
CAS# 6683-46-1 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 6683-46-1 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

 Safety Information

Hazard Codes Xi
HS Code 2902909090

 Synthetic Route

~61%

1,1,4,4-Tetramethyl-1,2,3,4-tetrahydronaphthalene Structure

1,1,4,4-Tetrame...

CAS#:6683-46-1

Literature: Centre Europeen de Bioprospective-Ceb Patent: US6265423 B1, 2001 ; US 6265423 B1

~82%

1,1,4,4-Tetramethyl-1,2,3,4-tetrahydronaphthalene Structure

1,1,4,4-Tetrame...

CAS#:6683-46-1

Literature: Kagechika, Hiroyuki; Kawachi, Emiko; Hashimoto, Yuichi; Himi, Toshiyuki; Shudo, Koichi Journal of Medicinal Chemistry, 1988 , vol. 31, # 11 p. 2182 - 2192

~%

1,1,4,4-Tetramethyl-1,2,3,4-tetrahydronaphthalene Structure

1,1,4,4-Tetrame...

CAS#:6683-46-1

Literature: Journal of the American Chemical Society, , vol. 85, p. 173 - 180

~98%

1,1,4,4-Tetramethyl-1,2,3,4-tetrahydronaphthalene Structure

1,1,4,4-Tetrame...

CAS#:6683-46-1

Literature: Held, Pierre; Heck, Marie-Pierre; Iyer, Jaya; Gronemeyer, Hinrich; Lebeau, Luc; Mioskowski, Charles Journal of Labelled Compounds and Radiopharmaceuticals, 1997 , vol. 39, # 6 p. 501 - 507

~%

1,1,4,4-Tetramethyl-1,2,3,4-tetrahydronaphthalene Structure

1,1,4,4-Tetrame...

CAS#:6683-46-1

Literature: Journal of Medicinal Chemistry, , vol. 31, # 11 p. 2182 - 2192

~%

1,1,4,4-Tetramethyl-1,2,3,4-tetrahydronaphthalene Structure

1,1,4,4-Tetrame...

CAS#:6683-46-1

Literature: Helvetica Chimica Acta, , vol. 56, # 5 p. 1775 - 1779 Journal of Organic Chemistry, , vol. 28, p. 2248 - 2255

~%

1,1,4,4-Tetramethyl-1,2,3,4-tetrahydronaphthalene Structure

1,1,4,4-Tetrame...

CAS#:6683-46-1

Literature: Journal of the American Chemical Society, , vol. 62, p. 36,43

~%

1,1,4,4-Tetramethyl-1,2,3,4-tetrahydronaphthalene Structure

1,1,4,4-Tetrame...

CAS#:6683-46-1

Detail
Literature: Doklady Akademii Nauk SSSR, , vol. 80, p. 369,371 Chem.Abstr., , p. 5022

 Customs

HS Code 2902909090
Summary 2902909090 other aromatic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%

 Synonyms

1,1,4,4-tetramethyl-2,3-dihydronaphthalene
1,1,4,4-Tetramethyl-1,2,3,4-tetrahydronaphthalene
Naphthalene, 1,2,3,4-tetrahydro-1,1,4,4-tetramethyl-
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