Name:
tert-Butyl cumyl peroxide
Synonym:
Trigonox T; cross-linking peroxide; organic peroxide; polymer initiator
CAS:
98-82-8
Section 1 - Chemical Product
MSDS Name:tert-Butyl cumyl peroxide
Synonym:Trigonox T; cross-linking peroxide; organic peroxide; polymer initiator
Synonym:Trigonox T; cross-linking peroxide; organic peroxide; polymer initiator
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 98-82-8 | Cumene | 2.5 | 202-704-5 |
| Hazard Symbols: XI O N Risk Phrases: 38 7 51/53 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Irritating to skin. May cause fire. Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
Causes severe skin irritation. May be harmful if absorbed through the skin.
Ingestion:
May be harmful if swallowed. May cause severe irritation of the mouth and throat.
Inhalation:
May cause respiratory tract irritation. May be harmful if inhaled.
Chronic:
Chronic exposure may cause effects similar to those of acute exposure.
Irritating to skin. May cause fire. Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
Causes severe skin irritation. May be harmful if absorbed through the skin.
Ingestion:
May be harmful if swallowed. May cause severe irritation of the mouth and throat.
Inhalation:
May cause respiratory tract irritation. May be harmful if inhaled.
Chronic:
Chronic exposure may cause effects similar to those of acute exposure.
Section 4 - FIRST AID MEASURES
Eyes: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid.
Skin:
In case of contact, immediately flush skin with plenty of water.
Remove contaminated clothing and shoes. Get medical aid. 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.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.
Skin:
In case of contact, immediately flush skin with plenty of water.
Remove contaminated clothing and shoes. Get medical aid. 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.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.
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. Strong oxidizer. Contact with other material may cause fire.
Extinguishing Media:
Use water fog or spray, dry chemical, foam or carbon dioxide.
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Strong oxidizer. Contact with other material may cause fire.
Extinguishing Media:
Use water fog or spray, dry chemical, foam or carbon dioxide.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Do not use combustible materials such as sawdust. Provide ventilation. Use only non-sparking tools and equipment. Prevent runoff from entering drains, sewers, or streams.
Spills/Leaks:
Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Do not use combustible materials such as sawdust. Provide ventilation. Use only non-sparking tools and equipment. Prevent runoff from entering drains, sewers, or streams.
Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep away from heat and flame.
Avoid breathing vapor or mist.
Storage:
Store in a tightly closed container. Keep away from reducing agents.
Store below 40C.
Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep away from heat and flame.
Avoid breathing vapor or mist.
Storage:
Store in a tightly closed container. Keep away from reducing agents.
Store below 40C.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Use explosion-proof ventilation equipment. Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower.
Exposure Limits CAS# 98-82-8: United Kingdom, WEL - TWA: 25 ppm TWA; 125 mg/m3 TWA United Kingdom, WEL - STEL: 50 ppm STEL; 250 mg/m3 STEL United States OSHA: 50 ppm TWA; 245 mg/m3 TWA Belgium - TWA: 20 ppm VLE; 100 mg/m3 VLE Belgium - STEL: 50 ppm VLE; 250 mg/m3 VLE France - VME: 50 ppm VME; 245 mg/m3 VME Germany: 50 ppm TWA; 250 mg/m3 TWA Germany: Skin absorber Malaysia: 50 ppm TWA; 246 mg/m3 TWA Netherlands: 50 ppm STEL; 250 mg/m3 STEL Netherlands: 20 ppm MAC; 100 mg/m3 MAC Russia: 50 mg/m3 TWA Spain: 20 ppm VLA-ED; 100 mg/m3 VLA-ED Spain: 50 ppm VLA-EC; 250 mg/m3 VLA-EC CAS# 98-83-9: United Kingdom, WEL - TWA: 50 ppm TWA; 246 mg/m3 TWA United Kingdom, WEL - STEL: 100 ppm STEL; 491 mg/m3 STEL United States OSHA: ; 100 ppm Ceiling; 480 mg/m3 Ceiling Belgium - TWA: 50 ppm VLE; 246 mg/m3 VLE Belgium - STEL: 100 ppm VLE; 490 mg/m3 VLE France - VME: 50 ppm VME; 240 mg/m3 VME Germany: 100 ppm TWA; 490 mg/m3 TWA Malaysia: 50 ppm TWA; 242 mg/m3 TWA Netherlands: 50 ppm MAC; 240 mg/m3 MAC Russia: 5 mg/m3 TWA Spain: 50 ppm VLA-ED; 246 mg/m3 VLA-ED Spain: 100 ppm VLA-EC; 492 mg/m3 VLA-EC CAS# 98-86-2:
Belgium - TWA: 10 ppm VLE; 50 mg/m3 VLE Malaysia: 10 ppm TWA; 49 mg/m3 TWA Netherlands: 10 ppm MAC; 49 mg/m3 MAC Russia: 5 mg/m3 TWA Spain: 10 ppm VLA-ED; 50 mg/m3 VLA-ED CAS# 3457-61-2: Personal Protective Equipment Eyes: Wear chemical splash goggles.
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.
Use explosion-proof ventilation equipment. Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower.
Exposure Limits CAS# 98-82-8: United Kingdom, WEL - TWA: 25 ppm TWA; 125 mg/m3 TWA United Kingdom, WEL - STEL: 50 ppm STEL; 250 mg/m3 STEL United States OSHA: 50 ppm TWA; 245 mg/m3 TWA Belgium - TWA: 20 ppm VLE; 100 mg/m3 VLE Belgium - STEL: 50 ppm VLE; 250 mg/m3 VLE France - VME: 50 ppm VME; 245 mg/m3 VME Germany: 50 ppm TWA; 250 mg/m3 TWA Germany: Skin absorber Malaysia: 50 ppm TWA; 246 mg/m3 TWA Netherlands: 50 ppm STEL; 250 mg/m3 STEL Netherlands: 20 ppm MAC; 100 mg/m3 MAC Russia: 50 mg/m3 TWA Spain: 20 ppm VLA-ED; 100 mg/m3 VLA-ED Spain: 50 ppm VLA-EC; 250 mg/m3 VLA-EC CAS# 98-83-9: United Kingdom, WEL - TWA: 50 ppm TWA; 246 mg/m3 TWA United Kingdom, WEL - STEL: 100 ppm STEL; 491 mg/m3 STEL United States OSHA: ; 100 ppm Ceiling; 480 mg/m3 Ceiling Belgium - TWA: 50 ppm VLE; 246 mg/m3 VLE Belgium - STEL: 100 ppm VLE; 490 mg/m3 VLE France - VME: 50 ppm VME; 240 mg/m3 VME Germany: 100 ppm TWA; 490 mg/m3 TWA Malaysia: 50 ppm TWA; 242 mg/m3 TWA Netherlands: 50 ppm MAC; 240 mg/m3 MAC Russia: 5 mg/m3 TWA Spain: 50 ppm VLA-ED; 246 mg/m3 VLA-ED Spain: 100 ppm VLA-EC; 492 mg/m3 VLA-EC CAS# 98-86-2:
Belgium - TWA: 10 ppm VLE; 50 mg/m3 VLE Malaysia: 10 ppm TWA; 49 mg/m3 TWA Netherlands: 10 ppm MAC; 49 mg/m3 MAC Russia: 5 mg/m3 TWA Spain: 10 ppm VLA-ED; 50 mg/m3 VLA-ED CAS# 3457-61-2: Personal Protective Equipment Eyes: Wear chemical splash goggles.
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: clear almost colorless
Odor: pungent odor
pH: Not available.
Vapor Pressure: 14 mm Hg @ 20 deg C
Viscosity: 4 mPa.s 20 deg C
Boiling Point: Not available.
Freezing/Melting Point: 5 - 8 deg C
Autoignition Temperature: > 400 deg C (> 752.00 deg F)
Flash Point: 72 deg C ( 161.60 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Immiscible.
Specific Gravity/Density: 0.940
Molecular Formula: C13H20O2
Molecular Weight: 208.3
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
A dangerous self-accelerating decomposition reaction and, under certain circumstances, explosion or fire can be caused by direct contact with incompatible substances or by thermal decomposition at and above the SADT (Self-Accelerating Decomposition Temp). SADT = 80C. This product is stable at ambient temperatures but may decompose if exposed to temperatures above 167F (75C).
Conditions to Avoid:
Ignition sources, excess heat, contamination.
Incompatibilities with Other Materials:
Strong oxidizing agents, reducing agents, strong acids, strong bases, heavy metals, polymerization catalysts.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide.
Hazardous Polymerization: Has not been reported
A dangerous self-accelerating decomposition reaction and, under certain circumstances, explosion or fire can be caused by direct contact with incompatible substances or by thermal decomposition at and above the SADT (Self-Accelerating Decomposition Temp). SADT = 80C. This product is stable at ambient temperatures but may decompose if exposed to temperatures above 167F (75C).
Conditions to Avoid:
Ignition sources, excess heat, contamination.
Incompatibilities with Other Materials:
Strong oxidizing agents, reducing agents, strong acids, strong bases, heavy metals, polymerization catalysts.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide.
Hazardous Polymerization: Has not been reported
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 98-82-8: GR8575000 CAS# 98-83-9: WL5075300 CAS# 98-86-2: AM5250000 CAS# 3457-61-2 unlisted.
LD50/LC50:
CAS# 98-82-8: Draize test, rabbit, eye: 86 mg Mild; Draize test, rabbit, eye: 500 mg/24H Mild; Draize test, rabbit, skin: 100 mg/24H Moderate; Inhalation, mouse: LC50 = 10 gm/m3/7H; Inhalation, mouse: LC50 = 15300 mg/m3/2H; Inhalation, mouse: LC50 = 10000 mg/m3/7H; Inhalation, rat: LC50 = 39000 mg/m3/4H; Oral, mouse: LD50 = 12750 mg/kg; Oral, rat: LD50 = 1400 mg/kg; Oral, rat: LD50 = 2.9 gm/kg; Skin, rabbit: LD50 = 12300 uL/kg.
CAS# 98-83-9: Draize test, rabbit, eye: 91 mg Mild; Draize test, rabbit, skin: 100% Moderate; Oral, mouse: LD50 = 4500 mg/kg; Oral, mouse: LD50 = 50000 mg/kg; Oral, rat: LD50 = 4900 mg/kg.
CAS# 98-86-2: Dermal, guinea pig: LD50 = >20 mL/kg; Draize test, rabbit, eye: 750 ug Severe; Inhalation, mouse: LC50 = 1200 mg/m3/4H; Oral, mouse: LD50 = 740 mg/kg; Oral, mouse: LD50 = 1250 mg/kg; Oral, rat: LD50 = 815 mg/kg; Oral, rat: LD50 = 2650 mg/kg; Skin, rabbit: LD50 = 15900 uL/kg.
CAS# 3457-61-2.
Oral LD50 (rat) for tert-butyl cumyl peroxide is 4920 mg/kg. The dermal LD50 (rabbit) for tert-butyl cumyl peroxide is not available.
It is a severe skin irritant (24 hour exposure) when tested on rabbit skin. For tert-butyl cumyl peroxide, the LC50 (rat) is > 140 ppm.
Prolonged or repeated skin contact may result in irritation with redness. This product did not produce irritation when tested in rabbit eyes. (Akzo Nobel).
Carcinogenicity:
Cumene - Not listed by ACGIH, IARC, or NTP.
alpha-Methyl styrene - Not listed by ACGIH, IARC, or NTP.
Acetophenone - Not listed by ACGIH, IARC, or NTP.
tert-Butyl cumyl peroxide - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
CAS# 98-82-8: GR8575000 CAS# 98-83-9: WL5075300 CAS# 98-86-2: AM5250000 CAS# 3457-61-2 unlisted.
LD50/LC50:
CAS# 98-82-8: Draize test, rabbit, eye: 86 mg Mild; Draize test, rabbit, eye: 500 mg/24H Mild; Draize test, rabbit, skin: 100 mg/24H Moderate; Inhalation, mouse: LC50 = 10 gm/m3/7H; Inhalation, mouse: LC50 = 15300 mg/m3/2H; Inhalation, mouse: LC50 = 10000 mg/m3/7H; Inhalation, rat: LC50 = 39000 mg/m3/4H; Oral, mouse: LD50 = 12750 mg/kg; Oral, rat: LD50 = 1400 mg/kg; Oral, rat: LD50 = 2.9 gm/kg; Skin, rabbit: LD50 = 12300 uL/kg.
CAS# 98-83-9: Draize test, rabbit, eye: 91 mg Mild; Draize test, rabbit, skin: 100% Moderate; Oral, mouse: LD50 = 4500 mg/kg; Oral, mouse: LD50 = 50000 mg/kg; Oral, rat: LD50 = 4900 mg/kg.
CAS# 98-86-2: Dermal, guinea pig: LD50 = >20 mL/kg; Draize test, rabbit, eye: 750 ug Severe; Inhalation, mouse: LC50 = 1200 mg/m3/4H; Oral, mouse: LD50 = 740 mg/kg; Oral, mouse: LD50 = 1250 mg/kg; Oral, rat: LD50 = 815 mg/kg; Oral, rat: LD50 = 2650 mg/kg; Skin, rabbit: LD50 = 15900 uL/kg.
CAS# 3457-61-2.
Oral LD50 (rat) for tert-butyl cumyl peroxide is 4920 mg/kg. The dermal LD50 (rabbit) for tert-butyl cumyl peroxide is not available.
It is a severe skin irritant (24 hour exposure) when tested on rabbit skin. For tert-butyl cumyl peroxide, the LC50 (rat) is > 140 ppm.
Prolonged or repeated skin contact may result in irritation with redness. This product did not produce irritation when tested in rabbit eyes. (Akzo Nobel).
Carcinogenicity:
Cumene - Not listed by ACGIH, IARC, or NTP.
alpha-Methyl styrene - Not listed by ACGIH, IARC, or NTP.
Acetophenone - Not listed by ACGIH, IARC, or NTP.
tert-Butyl cumyl peroxide - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Other No information available.
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# 98-82-8: 5000 lb final RQ; 2270 kg final RQ
USA RQ: CAS# 98-86-2: 5000 lb final RQ; 2270 kg final RQ
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XI O N
Risk Phrases:
R 38 Irritating to skin.
R 51/53 Toxic to aquatic organisms, may cause
long-term adverse effects in the aquatic environment.
R 7 May cause fire.
Safety Phrases:
S 3/7 Keep container tightly closed in a cool,
well-ventilated place.
S 14A Keep away from acids, reducing agents and
polymerisation catalysts.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
S 61 Avoid release to the environment. Refer to
special instructions/safety data sheets.
WGK (Water Danger/Protection)
CAS# 98-82-8: 1
CAS# 98-83-9: 2
CAS# 98-86-2: 1
CAS# 3457-61-2: 2
Canada
CAS# 98-82-8 is listed on Canadas DSL List.
CAS# 98-83-9 is listed on Canadas DSL List.
CAS# 98-86-2 is listed on Canadas DSL List.
CAS# 3457-61-2 is listed on Canadas NDSL List.
CAS# 98-82-8 is listed on Canadas Ingredient Disclosure List.
CAS# 98-83-9 is listed on Canadas Ingredient Disclosure List.
CAS# 98-86-2 is listed on Canadas Ingredient Disclosure List.
CAS# 3457-61-2 is not listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 98-82-8 is listed on the TSCA inventory.
CAS# 98-83-9 is listed on the TSCA inventory.
CAS# 98-86-2 is listed on the TSCA inventory.
CAS# 3457-61-2 is listed on the TSCA inventory.
