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644-06-4

644-06-4 structure
644-06-4 structure
  • Name: 6,7-Dimethoxy-2,2-dimethylchromene
  • Chemical Name: precocene II
  • CAS Number: 644-06-4
  • Molecular Formula: C13H16O3
  • Molecular Weight: 220.26
  • Catalog: Natural product Phenols
  • Create Date: 2018-03-19 08:00:00
  • Modify Date: 2024-01-02 15:44:11
  • Precocene II is the insect antijuvenile hormone[1].

Name precocene II
Synonyms 2H-1-BENZOPYRAN,6,7-DIMETHOXY-2,2-DIMETHYL
6,7-dimethoxy-2,2-dimethyl-3-chromene
EINECS 211-408-5
6,7-Dimethoxy-2,2-dimethyl-2H-1-benzopyran
precocenes II
2H-1-Benzopyran, 6,7-dimethoxy-2,2-dimethyl-
6,7-Dimethoxy-2,2-dimethyl2H-1-benzopyran
6,7-Dimethoxy-2,2-dimethyl-2H-benzopyran
6,7-Dimethoxy-2,2-dimethylchromene
6,7-Dimethoxy-2,2-dimethyl-2H-chromene
PRICOCENE II
Ageratochromene
Precocen 2
6,7-dimethoxy-2,2-dimethylchrom-3-ene
Precocene 2
Density 1.1±0.1 g/cm3
Boiling Point 300.4±42.0 °C at 760 mmHg
Melting Point 47.5ºC
Molecular Formula C13H16O3
Molecular Weight 220.26
Flash Point 100.0±25.2 °C
Exact Mass 220.109940
PSA 27.69000
LogP 3.38
Vapour Pressure 0.0±0.6 mmHg at 25°C
Index of Refraction 1.514
Storage condition -20°C Freezer
Name: Precocene II 99% Material Safety Data Sheet
Synonym: 6,7-Dimethoxy-2,2-Dimethyl-3-Chromene; Ageratochromene
CAS: 644-06-4
Section 1 - Chemical Product MSDS Name:Precocene II 99% Material Safety Data Sheet
Synonym:6,7-Dimethoxy-2,2-Dimethyl-3-Chromene; Ageratochromene

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
644-06-4 Precocene II 99% 211-408-5
Hazard Symbols: None Listed.
Risk Phrases: None Listed.

Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
The toxicological properties of this material have not been fully investigated.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation.
Ingestion:
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
Inhalation:
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
Chronic:
No information found.

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. Wash clothing before reuse.
Ingestion:
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or 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. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Runoff from fire control or dilution water may cause pollution.
Extinguishing Media:
Use agent most appropriate to extinguish fire. Use water spray, dry chemical, carbon dioxide, or appropriate foam.

Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Provide ventilation.

Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Storage:
Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 644-06-4: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to minimize contact with skin.
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: Crystals
Color: slightly yellow
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 46.00 - 47.00 deg C
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density:
Molecular Formula: C13H16O3
Molecular Weight: 220.27

Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, dust generation, excess heat, strong oxidants.
Incompatibilities with Other Materials:
Oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Hazardous Polymerization: Has not been reported

Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 644-06-4: DJ2527000 LD50/LC50:
Not available.
Carcinogenicity:
Precocene II - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

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: Not available.
Risk Phrases:
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 644-06-4: No information available.
Canada
CAS# 644-06-4 is listed on Canada's NDSL List.
CAS# 644-06-4 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 644-06-4 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

CHEMICAL IDENTIFICATION

RTECS NUMBER :
DJ2527000
CHEMICAL NAME :
2H-1-Benzopyran, 6,7-dimethoxy-2,2-dimethyl-
CAS REGISTRY NUMBER :
644-06-4
BEILSTEIN REFERENCE NO. :
0160683
LAST UPDATED :
199701
DATA ITEMS CITED :
6
MOLECULAR FORMULA :
C13-H16-O3
MOLECULAR WEIGHT :
220.29

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
500 mg/kg/5D-I
TOXIC EFFECTS :
Kidney, Ureter, Bladder - changes primarily in glomeruli Kidney, Ureter, Bladder - changes in tubules (including acute renal failure, acute tubular necrosis) Kidney, Ureter, Bladder - hematuria
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
27536 ug/kg
TOXIC EFFECTS :
Tumorigenic - Carcinogenic by RTECS criteria Liver - tumors
TYPE OF TEST :
Specific locus test

MUTATION DATA

TYPE OF TEST :
Unscheduled DNA synthesis
TEST SYSTEM :
Rodent - rat Liver
DOSE/DURATION :
1 umol/L
REFERENCE :
CALEDQ Cancer Letters (Shannon, Ireland). (Elsevier Scientific Pub. Ireland Ltd., POB 85, Limerick, Ireland) V.1- 1975- Volume(issue)/page/year: 26,311,1985
Hazard Codes Xi
Safety Phrases S24/25
RTECS DJ2527000
HS Code 2909199090
HS Code 2909199090
Summary 2909199090. other acyclic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%