PENTANOIC ACID | CAMEO Chemicals (2023)

Add to My ChemicalsPrint friendly page

Chemical data sheet


Chemical identifiers|Driven|Response recommendations|Physical Properties|regulations|Alternative chemical names

Chemical identifiers

What is this information?

ÖChemical identifier fieldscontain common identification numbers thatDiamant NFPAUS Department of Transportation hazard labels and a general description of the chemical. CAMEO Chemicals information comes from a variety of sourcesdata sources.

CAS Number UN/NA Number DOT hazard label USCG CHRIS-Code
  • 109-52-4
  • 3265
  • Corrosive
  • PENTANOIC ACID | CAMEO Chemicals (2) POC
NIOSH Pocket Guide International Chemical Safety Card


Diamond Danger bravery Description
PENTANOIC ACID | CAMEO Chemicals (4)Health 3 Can cause serious or permanent injury.
PENTANOIC ACID | CAMEO Chemicals (5)flammability 1 It must be preheated before ignition can take place.
PENTANOIC ACID | CAMEO Chemicals (6)instability 0 Normally stable, even under fire conditions.
PENTANOIC ACID | CAMEO Chemicals (7)Special

(NFPA, 2010)

general description

Colorless liquid with a pungent unpleasant odor. Density 0.94 g/cm3. Freezing point -93.2°F (-34°C). Boiling point 185.4°C (365.7°F). Flash point 88.9°C (192°F). Corrosive to metals and fabrics.


What is this information?

Ödanger areascontainspecial warningsAir and water reactions, fire hazards, health hazards, a reactivity profile and details onreactive group assignmentsepotentially incompatible pads. CAMEO Chemicals information comes from a variety of sourcesdata sources.

Reactivity Warnings


Air and Water Reactions

Soluble in water.

fire hazard

Specific Hazards From Combustion Products: Exposure to fire may produce irritating fumes and toxic gases such as carbon dioxide and carbon monoxide. (USCG, 1999)

health hazard

Corrosive. Very harmful to mucosal tissues, upper respiratory tract, eyes and skin. Symptoms may include burning, coughing, wheezing, laryngitis, shortness of breath, nausea, and vomiting. Extremely harmful to the skin. It can be absorbed through the skin. (USCG, 1999)

reactivity profile

PENTANOIC ACID is a carboxylic acid. It exothermically neutralizes both organic and inorganic bases, producing water and a salt. Can react with active metals to form hydrogen gas and a metal salt. Reacts with cyanide salts to form gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by reaction with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides and sulfides. Reacts with sulphites, nitrites, thiosulphates and dithionites releasing flammable and/or toxic gases and heat. Reacts with carbonates and bicarbonates to form a harmless gas (carbon dioxide) but still heat. It can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. Can initiate polymerization reactions. It can catalyze (increase the speed of) chemical reactions.

Belongs to the following reactive group(s)

  • carboxylic acids

Potentially incompatible absorbents

No information available.

Response recommendations

What is this information?

ÖResponse recommendation fieldsinclude isolation and evacuation distances, firefighting recommendations, non-firefighting procedures, protective clothing and first aid. CAMEO Chemicals information comes from a variety of sourcesdata sources.

isolation and evacuation

Extract fromGuia ERG 153[Substances - Toxic and/or Corrosive (Fuel)]:

IMMEDIATE PRECAUTIONS: Isolate the spill or leak area in all directions at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.

BURIAL: Increase distance of immediate upwind precaution if necessary.

FIRE: If a tank, wagon or truck is involved in a fire, ISOLATE 800 meters (1/2 mile) in all directions; Also consider the initial evacuation of 800 meters (1/2 mile) in all directions. (ERG, 2020)

fight fire

Extract fromGuia ERG 153[Substances - Toxic and/or Corrosive (Fuel)]:

SMALL FIRE: Dry chemical, CO2 or water spray.

LARGE FIRE: Dry chemical, CO2, alcohol-resistant foam, or water spray. If safe to do so, remove undamaged containers from fire area. Fire protection dike drain for later disposal.

TANK OR VEHICLE/TRAILER LOADS FIRE: Fight fire from maximum distance or use unmanned Master Flow devices or surveillance nozzles. Do not fill the containers with water. Keep containers holding large volumes of water cool until well after fire is out. Remove immediately if there is increased noise from vent fuses or tank discoloration. ALWAYS stay away from burning tanks. (ERG, 2020)

No fire reaction

Extract fromGuia ERG 153[Substances - Toxic and/or Corrosive (Fuel)]:

ELIMINATE all sources of ignition (no smoking, flames, sparks or flames) in the immediate area. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop the leak if it's safe to do so. Prevent entry into waterways, sewers, basements or confined areas. Soak up or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT PUT WATER INTO CONTAINERS. (ERG, 2020)

protective clothing

Fully waterproof protective clothing including boots and gloves. Where splashing is possible, wear full face shield or chemical goggles. Do not wear contact lenses when working with this material. Use approved respirator to protect against fumes. (USCG, 1999)

Suit fabrics from DuPont Tychem®

Fabric legend, test details and a warning from DuPont

Legend of Tychem® fabric

QS = Tychem 2000 CHF
CQ = Tychem 2000
SL = Tychem 4000
C3 = Tychem 5000
TF = Tychem 6000
TP = Tychem 6000 FR
TK = Tychem 10000
RF = Tychem 10000 FR


Permeability data was generated for DuPont by a third party laboratory. Industrial chemical permeation data is obtained in accordance with ASTM F739. Normalized breakthrough times (the time for the permeation rate to exceed 0.1 µg/cm2/min) are given in minutes. All chemicals were tested between approximately 20°C and 27°C unless otherwise noted. All chemicals tested at greater than 95% concentration unless otherwise noted. Chemical warfare agents (Lewisite, Sarin, Soman, Sulfur Mustard, Tabun, and VX Nerve Agent) were tested at 22°C and 50% relative humidity per military standard MIL-STD-282. The "breakthrough time" for chemical warfare agents is defined as the time at which the cumulative mass that has penetrated the tissue exceeds the limit in MIL-STD-282 [1.25 or 4.0 μg/cm2].

A DuPont warning

This information is based on technical data that DuPont believes to be reliable at the time of publication. It may be revised as additional knowledge and experience is gained. The information reflects the laboratory performance of fabrics, not complete garments, under controlled conditions. It is intended for informational use by persons technically capable of evaluating it under its specific end-use conditions at their own risk and expense. It is the user's responsibility to determine the level of toxicity and the appropriate personal protective equipment required. Anyone wishing to use this information must first ensure that the clothing selected is suitable for its intended use. In many cases, seams and fasteners have shorter break times and higher permeation rates than woven fabrics. If the fabric is torn, frayed or punctured, or if seams or fasteners fail, or if attached gloves, visors, etc. are damaged, the end user must stop using the garment to avoid potential chemical exposure. Because the Terms of Use are beyond our control, DuPont makes no warranties, express or implied, including but not limited to the warranties of merchantability or fitness for a particular use, and assumes no liability in connection with the use of this information. This information is not intended as a license to operate or a recommendation to infringe any patent, trademark, or technical information of DuPont or others relating to the Materials or their use.

Normalized lead times (in minutes)
Chemical CAS Number Condition QS quality control SL C3 VF Pt RC TK Rf
pentanoic acid 109-52-4 Fluid >480

> means greater than.

Special DuPont Warning: Tychem® and Tyvek® fabrics should not be used around heat, flame, sparks or in potentially flammable or explosive environments. Only...

More information...

...Tychem® ThermoPro, Tychem® Reflector® and Tychem® TK types 600T/601T (with aluminised outer shell) have been developed and tested to reduce burn injuries while escaping a stick fire. Users of Tychem® ThermoPro, Tychem® Reflector® and Tychem® TK Styles 600T/601T (with aluminized outerwear) should not intentionally enter a potentially explosive atmosphere. Tychem® garments with attached socks must be worn in protective outdoor footwear and are not suitable as outdoor footwear. These attached socks do not have sufficient durability or slip resistance to be used as outer foot covering.

(DuPont, 2022) Show more

First aid

EYES: First check the victim for contact lenses and remove if present. Flush the victim's eyes with water or normal saline for 20 to 30 minutes while calling a hospital or poison control center. Do not put any ointment, oil, or medication in the victim's eyes without the specific direction of a doctor. Transport the victim to a hospital IMMEDIATELY after washing the eyes, even if there are no symptoms (such as redness or irritation).

SKIN: Flush affected skin IMMEDIATELY with water while removing and quarantining all contaminated clothing. Wash all affected skin thoroughly with soap and water. Call a hospital or poison control center IMMEDIATELY even if there are no symptoms (such as redness or irritation). IMMEDIATELY transport the injured person to a hospital for treatment after washing the affected areas.

INHALATION: IMMEDIATELY leave contaminated area; take a deep breath of fresh air. If symptoms develop (such as wheezing, coughing, shortness of breath, or a burning sensation in the mouth, throat, or chest), call a doctor and prepare to take the victim to a hospital. Provide emergency responders with appropriate respiratory protection when entering an unfamiliar atmosphere. If possible, use self-contained breathing apparatus (SCBA); If not available, use a level of protection greater than or equal to that recommended in protective clothing.

INGESTION: DO NOT INDUCE VOMITING. Harsh chemicals destroy the mucous membranes of the mouth, throat and esophagus, and also pose a high risk of being inhaled into the victim's lungs when vomiting, increasing medical problems. If victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute chemical and call a hospital or poison control center IMMEDIATELY. Transport the injured person to a hospital IMMEDIATELY. If the victim is convulsing or unconscious, do not give anything by mouth, make sure the victim's airway is patent, and lay the victim on their side with the head lower than the body. DO NOT INDUCE VOMITING. Transport the victim to a hospital IMMEDIATELY. (NTP, 1992)

Physical Properties

What is this information?

ÖPhysical property fieldsinclude properties such as vapor pressure and boiling point, as well as explosive limits andtoxic exposure limitsCAMEO Chemicals information comes from a variety of sourcesdata sources.

Chemical formula:
  • C5H10O2

Flash point:192 ° F (NTP, 1992)

Lower Explosive Limit (LEL):1,6 % (USCG, 1999)

Upper Explosive Limit (UEL):7,6 % (USCG, 1999)

autoignition temperature:752 °F (USCG, 1999)

melting point:-30,1°F (NTP, 1992)

vapor pressure:1 mmHgat 108°F; 40 mmHg bei 226,0°F; 760 mmHg bei 363,9 °F (NTP, 1992)

Vapor density (relative to air):3.52 (NTP, 1992)

Specific weight:0,939 (USCG, 1999)

Boiling point:365°Fett 760 mmHg (NTP, 1992)

molecular weight:102.13 (NTP, 1992)

Solubility in water:10 to 50 mg/mL at 72°F (NTP, 1992)

Ionization Energy/Potential: Data not available

IDLH: Data not available

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
valeric acid; (n-pentanoic acid) (109-52-4) 2.2 mg/m3 24mg/m3 140mg/m3 UEG = 16000 ppm

(DOE, 2018)


What is this information?

ÖRegulatory information fieldsincludes information from the US Environmental Protection Agency's Consolidated Title III List, the US Cybersecurity and Infrastructure Agency's Anti-Terrorism Chemical Facility Standards, and the Security Administration's Process Safety Management Standard List of Highly Hazardous Chemicals and US Occupational Health (see moredata sources).

Consolidated List of EPA Listings

No regulatory information available.

CISA Chemical Facility Anti-Terror-Standards (CFATS)

No regulatory information available.

OSHA Standard Process Safety Management (PSM)-Liste

No regulatory information available.

Alternative chemical names

What is this information?

This section contains a list of alternative names for this chemical, including trade names and synonyms.

  • pentanoic acid
  • valeric acid
  • valeric acid

One|Privacy Policy|contact us|Website satisfaction survey|mobile website


Dono do Seite:Response and Recovery OfficePENTANOIC ACID | CAMEO Chemicals (9),National Ocean ServicePENTANOIC ACID | CAMEO Chemicals (10),National Oceanic and Atmospheric AdministrationPENTANOIC ACID | CAMEO Chemicals (11).EUA.govPENTANOIC ACID | CAMEO Chemicals (12).

CAMEO Chemicals-Version 2.8.0 Rev. 1.

Top Articles
Latest Posts
Article information

Author: Geoffrey Lueilwitz

Last Updated: 03/07/2023

Views: 6060

Rating: 5 / 5 (80 voted)

Reviews: 87% of readers found this page helpful

Author information

Name: Geoffrey Lueilwitz

Birthday: 1997-03-23

Address: 74183 Thomas Course, Port Micheal, OK 55446-1529

Phone: +13408645881558

Job: Global Representative

Hobby: Sailing, Vehicle restoration, Rowing, Ghost hunting, Scrapbooking, Rugby, Board sports

Introduction: My name is Geoffrey Lueilwitz, I am a zealous, encouraging, sparkling, enchanting, graceful, faithful, nice person who loves writing and wants to share my knowledge and understanding with you.