Phthalic anhydride

CAS 85-44-9 C₈H₄O₃ MW 148.1000 Danger 3 SDS documents available OSHA PEL listed NIOSH data available

Corrosion

Exclamation Mark

Health Hazard

Emergency: 911 | Poison Control: 1-800-222-1222

Safety Data Sheets

Manufacturer	Download
Alfa Aesar	Download PDF
Sigma Aldrich	Download PDF
TCI	Download PDF

Recommended safety equipment

Personal protective equipment commonly recommended for the hazard classes shown above.

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Hazard Statements

Code	Statement	Hazard Class
`H302`	Harmful if swallowed	Acute toxicity, oral
`H315`	Causes skin irritation	Skin corrosion/irritation
`H317`	May cause an allergic skin reaction	Sensitization, Skin
`H318`	Causes serious eye damage	Serious eye damage/eye irritation
`H334`	May cause allergy or asthma symptoms or breathing difficulties if inhaled	Sensitization, respiratory
`H335`	May cause respiratory irritation	Specific target organ toxicity, single exposure; Respiratory tract irritation
`H361`	Suspected of damaging fertility or the unborn child	Reproductive toxicity
`H372`	Causes damage to organs through prolonged or repeated exposure	Specific target organ toxicity, repeated exposure

Precautionary Statements

Code	Statement
`P203`	Obtain, read and follow all safety instructions before use.
`P233`	Keep container tightly closed.
`P260`	Do not breathe dust/fume/gas/mist/vapors/spray.
`P261`	Avoid breathing dust/fume/gas/mist/vapors/spray.
`P264`	Wash hands [and ...] thoroughly after handling.
`P264+P265`	Wash hands [and ...] thoroughly after handling. Do not touch eyes.
`P270`	Do not eat, drink or smoke when using this product.
`P271`	Use only outdoors or in a well-ventilated area.
`P272`	Contaminated work clothing should not be allowed out of the workplace.
`P280`	Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
`P284`	[In case of inadequate ventilation] Wear respiratory protection.
`P301+P317`	IF SWALLOWED: Get medical help.
`P302+P352`	IF ON SKIN: wash with plenty of water/...
`P304+P340`	IF INHALED: Remove person to fresh air and keep comfortable for breathing.
`P305+P354+P338`	IF IN EYES: Immediately rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.
`P317`	Get emergency medical help.
`P318`	if exposed or concerned, get medical advice.
`P319`	Get medical help if you feel unwell.
`P321`	Specific treatment (see information on this label and safety datasheet)).
`P330`	Rinse mouth.
`P332+P317`	If skin irritation occurs: Get medical help.
`P333+P317`	If skin irritation or rash occurs: Get medical help.
`P342+P316`	If experiencing respiratory symptoms: Get emergence medical help immediately.
`P362+P364`	Take off contaminated clothing and wash it before reuse.
`P403`	Store in a well-ventilated place.
`P403+P233`	Store in a well-ventilated place. Keep container tightly closed.
`P405`	Store locked up.
`P501`	Dispose of contents/container to ...

Exposure Limits

OSHA PEL	12 mg-m3
NIOSH REL	6 mg-m3
NIOSH IDLH	60 mg-m3
Skin Notation	Yes — can be absorbed through skin

Physical Properties

A colorless to white lustrous solid in the form of needles with a mild distinctive odor.

Boiling Point	563°F
Flash Point	305°F
Vapor Pressure	0.0015 mmHg
Specific Gravity	1.53 at 68°F

NFPA 704 Diamond

Target Organs

Lungs Skin Eyes

skin and respiratory irritation and sensitization, eye irritation causing conjunctivitis

Synonyms

1,2-benzenedicarboxylic anhydride; 1,3, dioxophthalan; 1,3 isobenzoflurandione; PAN; phthalic acid anhydride

Data Sources

GHS Classification: PubChem CID 6811
OSHA PEL: OSHA Occupational Chemical Database
NIOSH REL/IDLH: NIOSH Pocket Guide

Disclaimer: This information is compiled from public regulatory databases for reference only. It does not replace the manufacturer's Safety Data Sheet (SDS). Always consult the official SDS for your specific product before handling chemicals.

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