Phthalic anhydride CAS#85-44-9

Phthalic anhydride Chemical Properties

Boiling point 

284 °C(lit.)

bulk density

500-700kg/m3

density 

1,53 g/cm3

vapor density 

5.1 (vs air)

vapor pressure 

<0.01 mm Hg ( 20 °C)

refractive index 

1.4500 (estimate)

Fp 

152 °C

storage temp. 

Store below +30°C.

solubility 

6g/l (slow decomposition)

form 

Flaky Crystals

pka

2.97[at 20 ℃]

color 

White

Odor

Characteristic choking odor

PH

2 (6g/l, H2O, 20℃)

PH Range

2 at 6 g/l at 20 °C

explosive limit

1.7-10.5%(V)

Water Solubility 

6 g/L (20 ºC)

Sensitive 

Moisture Sensitive

Merck 

14,7372

BRN 

118515

Henry's Law Constant

6.29 at 20 °C (approximate - calculated from water solubility and vapor pressure)

Exposure limits

NIOSH REL: TWA 6 mg/m3 (1 ppm), IDLH 60 mg/m3; OSHA PEL: TWA 12 mg/m3 (2 ppm); ACGIH TLV: TWA 1 ppm (adopted).

Stability:

Stable. Combustible. Incompatible with strong oxidizing agents, strong bases, moisture, strong acids. Dust may form an explosive mixture with air.

Cosmetics Ingredients Functions

NOT REPORTED

InChI

1S/C8H4O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4H

InChIKey

LGRFSURHDFAFJT-UHFFFAOYSA-N

SMILES

O=C1OC(=O)c2ccccc12

LogP

2.07 at 20℃

CAS DataBase Reference

85-44-9(CAS DataBase Reference)

NIST Chemistry Reference

Phthalic anhydride(85-44-9)

EPA Substance Registry System

Phthalic anhydride (85-44-9)

Safety Information

Risk Statements 

22-37/38-41-42/43

Safety Statements 

23-24/25-26-37/39-46-22

RIDADR 

2214

OEB

B

OEL

TWA: 6 mg/m3 (1 ppm)

WGK Germany 

1

RTECS 

TI3150000

F 

10-21

Autoignition Temperature

580 °C

TSCA 

TSCA listed

HazardClass 

8

PackingGroup 

III

HS Code 

29173500

Storage Class

11 - Combustible Solids

Hazard Classifications

Acute Tox. 4 Oral
Eye Dam. 1
Resp. Sens. 1
Skin Irrit. 2
Skin Sens. 1
STOT SE 3

Hazardous Substances Data

85-44-9(Hazardous Substances Data)

Toxicity

LD50 orally in Rabbit: 1530 mg/kg LD50 dermal Rabbit > 3160 mg/kg

IDLA

60 mg/m3