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Chemical Datasheet
N-BUTYL PHTHALATE |
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Chemical Identifiers
CAS Number |
UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
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NIOSH Pocket Guide |
International Chem Safety Card |
Dibutyl phthalate
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NFPA 704
General Description
N-butyl phthalate is a colorless oily liquid. It is insoluble in water. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. Since it is a liquid it can easily penetrate the soil and contaminate groundwater and nearby streams. It is combustible though it may take some effort to ignite. It is used in paints and plastics and as a reaction media for chemical reactions.
Hazards
Reactivity Alerts
none
Air & Water Reactions
Insoluble in water.
Fire Hazard
Combustible. (USCG, 1999)
Health Hazard
Excerpt from ERG Guide 171 [Substances (Low to Moderate Hazard)]:
Inhalation of material may be harmful. Contact may cause burns to skin and eyes. Inhalation of Asbestos dust may have a damaging effect on the lungs. Fire may produce irritating, corrosive and/or toxic gases. Some liquids produce vapors that may cause dizziness or asphyxiation. Runoff from fire control or dilution water may cause environmental contamination. (ERG, 2024)
Reactivity Profile
N-BUTYL PHTHALATE is an ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides. Avoid contact with strong oxidizing agents and strong bases. Will not polymerize. (USCG, 1999). Can generate electrostatic charges. [Handling Chemicals Safely 1980. p. 250].
Belongs to the Following Reactive Group(s)
- Esters, Sulfate Esters, Phosphate Esters, Thiophosphate Esters, and Borate Esters
Potentially Incompatible Absorbents
No information available.
Response Recommendations
Isolation and Evacuation
Excerpt from ERG Guide 171 [Substances (Low to Moderate Hazard)]:
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.
FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2024)
Firefighting
Excerpt from ERG Guide 171 [Substances (Low to Moderate Hazard)]:
CAUTION: Fire involving Safety devices (UN3268) and Fire suppressant dispersing devices (UN3559) may have a delayed activation and a risk of hazardous projectiles. Extinguish the fire at a safe distance.
SMALL FIRE: Dry chemical, CO2, water spray or regular foam.
LARGE FIRE: Water spray, fog or regular foam. Do not scatter spilled material with high-pressure water streams. If it can be done safely, move undamaged containers away from the area around the fire. Dike runoff from fire control for later disposal.
FIRE INVOLVING TANKS: Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks in direct contact with flames. (ERG, 2024)
Non-Fire Response
Excerpt from ERG Guide 171 [Substances (Low to Moderate Hazard)]:
Do not touch or walk through spilled material. Stop leak if you can do it without risk. Prevent dust cloud. For Asbestos, avoid inhalation of dust. Cover spill with plastic sheet or tarp to minimize spreading. Do not clean up or dispose of, except under supervision of a specialist.
SMALL DRY SPILL: With clean shovel, place material into clean, dry container and cover loosely; move containers from spill area.
SMALL SPILL: Pick up with sand or other non-combustible absorbent material and place into containers for later disposal.
LARGE SPILL: Dike far ahead of liquid spill for later disposal. Cover powder spill with plastic sheet or tarp to minimize spreading. Prevent entry into waterways, sewers, basements or confined areas. (ERG, 2024)
Protective Clothing
Excerpt from NIOSH Pocket Guide for Dibutyl phthalate:
Skin: No recommendation is made specifying the need for personal protective equipment for the body.
Eyes: PREVENT EYE CONTACT - Wear appropriate eye protection to prevent eye contact.
Wash skin: No recommendation is made specifying the need for washing the substance from the skin (either immediately or at the end of the work shift).
Remove: No recommendation is made specifying the need for removing clothing that becomes wet or contaminated.
Change: No recommendation is made specifying the need for the worker to change clothing after the workshift. (NIOSH, 2024)
DuPont Tychem® Suit Fabrics
Normalized Breakthrough Times (in Minutes)
Chemical |
CAS Number |
State |
QS |
QC |
SL |
C3 |
TF |
TP |
RC |
TK |
RF |
Dibutyl 1,2-benzenedicarboxylate |
84-74-2 |
Liquid |
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nm |
nm |
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Dibutyl phthalate |
84-74-2 |
Liquid |
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nm |
nm |
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Special Warning from DuPont: Tychem® and Tyvek® fabrics should not be
used around heat, flames, sparks or in potentially flammable or
explosive environments. Only...
(DuPont, 2024)
First Aid
EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.
SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.
INGESTION: DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital. (NTP, 1992)
Physical Properties
Flash Point:
315°F
(NTP, 1992)
Lower Explosive Limit (LEL):
0.5 %
(NTP, 1992)
Upper Explosive Limit (UEL):
2.5 %
Calculated
(USCG, 1999)
Autoignition Temperature:
757°F
(USCG, 1999)
Melting Point:
-31°F
(NTP, 1992)
Vapor Pressure:
1 mmHg
at 297°F
; 1.1 mmHg at 302°F
(NTP, 1992)
Vapor Density (Relative to Air):
9.58
(NTP, 1992)
- Heavier than air; will sink
Specific Gravity:
1.049
at 68°F
(USCG, 1999)
- Denser than water; will sink
Boiling Point:
644°F
at 760 mmHg
(NTP, 1992)
Molecular Weight:
278.35
(NTP, 1992)
Water Solubility:
less than 1 mg/mL
at 68°F
(NTP, 1992)
Ionization Energy/Potential: data unavailable
IDLH:
4000 mg/m3
(NIOSH, 2024)
AEGLs (Acute Exposure Guideline Levels)
No AEGL information available.
ERPGs (Emergency Response Planning Guidelines)
No ERPG information available.
PACs (Protective Action Criteria)
Chemical |
PAC-1 |
PAC-2 |
PAC-3 |
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Dibutyl phthalate (84-74-2)
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15 mg/m3 |
1600 mg/m3 |
9300 mg/m3  |
LEL = 5000 ppm |
(DOE, 2024)
Regulatory Information
EPA Consolidated List of Lists
Regulatory Name |
CAS Number/ 313 Category Code |
EPCRA 302 EHS TPQ |
EPCRA 304 EHS RQ |
CERCLA RQ |
EPCRA 313 TRI |
RCRA Code |
CAA 112(r) RMP TQ |
Dibutyl phthalate |
84-74-2 |
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10 pounds |
313 |
U069 |
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n-Butyl phthalate |
84-74-2 |
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10 pounds |
X |
U069 |
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(EPA List of Lists, 2024)
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
No regulatory information available.
OSHA Process Safety Management (PSM) Standard List
No regulatory information available.
Alternate Chemical Names
- BENZENE-O-DICARBOXYLIC ACID DI-N-BUTYL ESTER
- BIS-N-BUTYL PHTHALATE
- BUTYL PHTHALATE
- CELLUFLEX DPB
- CORFLEX 440
- DBP
- DBP (ESTER)
- DI(N-BUTYL) 1,2-BENZENEDICARBOXYLATE
- DI-N-BUTYL PHTHALATE
- DIBUTYL 1,2-BENZENE-DICARBOXYLATE
- DIBUTYL 1,2-BENZENEDICARBOXYLATE
- DIBUTYL O-PHTHALATE
- DIBUTYL PHTHALATE
- ELAOL
- ERGOPLAST FDB
- GENOPLAST B
- HATCO DBP
- HEXAPLAS M/B
- KODAFLEX DBP
- MONOCIZER DBP
- N-BUTYL PHTHALATE
- O-BENZENEDICARBOXYLIC ACID, DIBUTYL ESTER
- PALATINOL C
- PHTHALIC ACID DI-N-BUTYL ESTER
- PHTHALIC ACID, DIBUTYL ESTER
- POLYCIZER DBP
- PX 104
- R!C. PLASTICIZER DBP
- STAFLEX DBP
- UNIMOLL DB
- VESTINOL C
- WITCIZER 300
- WITICIZER 300