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81-84-5

Basic Information
CAS No.: 81-84-5
Name: 1,8-Naphthalic anhydride
Molecular Structure:
Molecular Structure of 81-84-5 (1,8-Naphthalic anhydride)
Formula: C12H6O3
Molecular Weight: 198.17
Synonyms: Naphthalicanhydride (7CI,8CI);1,8-Naphthalenedicarboxylic acid anhydride;1,8-Naphthalenedicarboxylic anhydride;1,8-Naphthalic acid anhydride;
EINECS: 201-380-2
Density: 1.449 g/cm3
Melting Point: 269 °C
Boiling Point: 407.5 °C at 760 mmHg
Flash Point: 206.8 °C
Solubility: decomposes in water
Appearance: beige to light brown powder
Hazard Symbols: IrritantXi
Risk Codes: 36/37/38
Safety: 26-37/39-24/25
Transport Information:
PSA: 43.37000
LogP: 2.15040
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Chemistry

Product Name:1,8-Naphthalic anhydride(81-84-5):

Molecular formula C12H6O3
Formula Weight:198.17
Density:1.449 g/cm3
Melting Point:269 °C
Boiling Point:407.5 °C at 760 mmHg
Refractive Index:1.712
Flash Point: 206.8 °C 
Water Solubility: decomposes
Sensitive: Moisture Sensitive 
Appearance:beige to light brown powder
Product Categories: Intermediates of Dyes and Pigments;Oxygen cyclic compounds;Naphthalene derivatives
Synonyms of 1,8-Naphthalic anhydride(81-84-5):1,8-naphthalenediocanhydride;1,8-Naphthoic anhydride;1,8-Napthalic anhydride;ai3-09071;Benzo[de]isochromene-1,3-dione;Naphthalenedicarboxylic-1,8-anhydride;naphthalenedicarboxylicanhydride;naphthalic
Molecular Structure of 1,8-Naphthalic anhydride(81-84-5):

 

Toxicity Data With Reference

LD50/LC50: RTECS:
CAS# 81-84-5: Oral, mouse: LD50 = 1600 mg/kg;
Oral, rat: LD50 = 12340 mg/kg;
Skin, rabbit: LD50 = >2025 mg/kg;
Carcinogenicity: 1,8-Naphthalic anhydride - Not listed as a carcinogen by ACGIH, IARC, NTP, or CA Prop 65.
Other: The toxicological properties have not been fully investigated. See actual entry in RTECS for complete information.

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Low toxicity by ingestion and skin contact. When heated to decomposition it emits acrid smoke and irritating fumes. See also ANHYDRIDES.
Hazard Codes: IrritantXi
Risk Statements: 36/37/38 
R36/37/38: Irritating to eyes, respiratory system and skin
Safety Statements: 26-37/39-24/25 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
S37/39: Wear suitable gloves and eye/face protection
S24/25: Avoid contact with skin and eyes
WGK Germany: 2
RTECS: QK5350000
F: 21
HS Code: 29173980

Specification

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols:Not available 
Risk Phrases: 
Safety Phrases:
S 24/25 Avoid contact with skin and eyes. 
WGK (Water Danger/Protection)
CAS# 81-84-5: Not available
Canada
CAS# 81-84-5 is listed on Canada's NDSL List
US Federal
TSCA
CAS# 81-84-5 is listed on the TSCA Inventory.