Name:
Terephthaldehyde monodiethylacetal 98+% stabilized with 0.1%
Synonym:
4-(Diethoxymethyl)benzaldehyde
CAS:
121-44-8
Section 1 - Chemical Product
MSDS Name:Terephthaldehyde monodiethylacetal 98+% stabilized with 0.1%
Synonym:4-(Diethoxymethyl)benzaldehyde
Synonym:4-(Diethoxymethyl)benzaldehyde
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 121-44-8 | Triethylamine | 0.1 | 204-469-4 |
| Hazard Symbols: None Listed. Risk Phrases: None Listed. |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Hygroscopic (absorbs moisture from the air).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 gastrointestinal irritation with nausea, vomiting and diarrhea. 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.
Hygroscopic (absorbs moisture from the air).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 gastrointestinal irritation with nausea, vomiting and diarrhea. 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 immediately. 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 immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician:
Skin:
Get medical aid immediately. 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 immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
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.
Extinguishing Media:
In case of fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.
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.
Extinguishing Media:
In case of fire, use water, dry chemical, chemical foam, or alcohol-resistant 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. Clean up spills immediately, observing precautions in the Protective Equipment section. Provide ventilation.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Clean up spills immediately, observing precautions in the Protective Equipment section. Provide ventilation.
Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Use with adequate ventilation.
Storage:
Keep container closed when not in use. Store in a tightly closed container. Store protected from moisture. Store in a cool, dry area away from incompatible substances.
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Use with adequate ventilation.
Storage:
Keep container closed when not in use. Store in a tightly closed container. Store protected from moisture. Store in a cool, dry 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# 121-44-8: United Kingdom, WEL - TWA: 2 ppm TWA; 8 mg/m3 TWA United Kingdom, WEL - STEL: 4 ppm STEL; 17 mg/m3 STEL United States OSHA: 25 ppm TWA; 100 mg/m3 TWA Belgium - TWA: 1 ppm VLE; 4.2 mg/m3 VLE Belgium - STEL: 3 ppm VLE; 12.6 mg/m3 VLE France - VLE: 10 ppm VLE; 40 mg/m3 VLE Germany: 1 ppm TWA; 4.2 mg/m3 TWA Germany: Skin absorber Malaysia: 1 ppm TWA; 4.1 mg/m3 TWA Netherlands: 10 ppm STEL; 40 mg/m3 STEL Netherlands: 5 ppm MAC; 20 mg/m3 MAC Russia: 10 mg/m3 TWA Spain: 2 ppm VLA-ED; 8.4 mg/m3 VLA-ED Spain: 3 ppm VLA-EC; 12.6 mg/m3 VLA-EC CAS# 81172-89-6: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate gloves to prevent skin exposure.
Clothing:
Wear appropriate clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHAs 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.
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# 121-44-8: United Kingdom, WEL - TWA: 2 ppm TWA; 8 mg/m3 TWA United Kingdom, WEL - STEL: 4 ppm STEL; 17 mg/m3 STEL United States OSHA: 25 ppm TWA; 100 mg/m3 TWA Belgium - TWA: 1 ppm VLE; 4.2 mg/m3 VLE Belgium - STEL: 3 ppm VLE; 12.6 mg/m3 VLE France - VLE: 10 ppm VLE; 40 mg/m3 VLE Germany: 1 ppm TWA; 4.2 mg/m3 TWA Germany: Skin absorber Malaysia: 1 ppm TWA; 4.1 mg/m3 TWA Netherlands: 10 ppm STEL; 40 mg/m3 STEL Netherlands: 5 ppm MAC; 20 mg/m3 MAC Russia: 10 mg/m3 TWA Spain: 2 ppm VLA-ED; 8.4 mg/m3 VLA-ED Spain: 3 ppm VLA-EC; 12.6 mg/m3 VLA-EC CAS# 81172-89-6: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate gloves to prevent skin exposure.
Clothing:
Wear appropriate clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHAs 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Liquid
Color: clear, colorless
Odor: None reported.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 89 - 93 deg C @ 0.7 mmHg
Freezing/Melting Point: Not available.
Autoignition Temperature: Not available.
Flash Point: > 112 deg C (> 233.60 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: decomposes
Specific Gravity/Density: 1.04 g/cm3
Molecular Formula: C12H16O3
Molecular Weight: 208.26
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Moisture, excess heat.
Incompatibilities with Other Materials:
Strong oxidizing agents, strong acids.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Hazardous Polymerization: Has not been reported.
Stable under normal temperatures and pressures.
Conditions to Avoid:
Moisture, excess heat.
Incompatibilities with Other Materials:
Strong oxidizing agents, strong acids.
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# 121-44-8: YE0175000 CAS# 81172-89-6 unlisted.
LD50/LC50:
CAS# 121-44-8: Inhalation, mouse: LC50 = 6 gm/m3; Oral, mouse: LD50 = 546 mg/kg; Oral, rat: LD50 = 460 mg/kg; Skin, rabbit: LD50 = 570 uL/kg.
CAS# 81172-89-6.
Carcinogenicity:
Triethylamine - Not listed by ACGIH, IARC, or NTP.
Terephthaldehyde monodiethylacetal - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
CAS# 121-44-8: YE0175000 CAS# 81172-89-6 unlisted.
LD50/LC50:
CAS# 121-44-8: Inhalation, mouse: LC50 = 6 gm/m3; Oral, mouse: LD50 = 546 mg/kg; Oral, rat: LD50 = 460 mg/kg; Skin, rabbit: LD50 = 570 uL/kg.
CAS# 81172-89-6.
Carcinogenicity:
Triethylamine - Not listed by ACGIH, IARC, or NTP.
Terephthaldehyde monodiethylacetal - 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
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing Group:
IMO
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing Group:
RID/ADR
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing group:
USA RQ: CAS# 121-44-8: 5000 lb final RQ; 2270 kg final RQ
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# 121-44-8: 1
CAS# 81172-89-6: No information available.
Canada
CAS# 121-44-8 is listed on Canadas DSL List.
CAS# 121-44-8 is listed on Canadas Ingredient Disclosure List.
CAS# 81172-89-6 is not listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 121-44-8 is listed on the TSCA inventory.
CAS# 81172-89-6 is not listed on the TSCA inventory.
It is for research and development use only.
