121-91-5

121-91-5 structure

Name: Isophthalic acid
Chemical Name: isophthalic acid
CAS Number: 121-91-5
Molecular Formula: C₈H₆O₄
Molecular Weight: 166.131
Catalog: Chemical reagent Organic reagent Aromatic acid
Create Date: 2018-04-21 08:00:00
Modify Date: 2025-08-20 20:07:38
Isophthalic acid is an intermediate for high performance unsaturated polyesters, resins for coatings, high solids paints, gel coats and modifier of polyethylene terephthalate for bottles.

Name	isophthalic acid
Synonyms	5-CARBOXAMINODOTRYPTAMINE 5-CARBOXAMIDOTRYPTAMINE HEMIETHANOLATE MALEATE SALT Isophthalic acid iso-phthalic acid benzene-1,3-dicarboxylic acid MFCD00002516 1,3-Benzenedicarboxylic acid EINECS 204-506-4 5-carboxamidotrypamine 5-Carboxamidotryptamine 2-Carboxyamidotryptamine 5-carboxybenzoic acid isophthalic_acid 5-CT 5-Carboxamide tryptamine isophtalic acid 5-Carboxyamidotryptamine 1,3-benzene dicarboxylic acid m-phthalic acid Benzen-1,3-Dicarboxylic acid hydrogen isophthalate 5-CAT

Density	1.5±0.1 g/cm3
Boiling Point	412.3±28.0 °C at 760 mmHg
Melting Point	341-343 °C(lit.)
Molecular Formula	C₈H₆O₄
Molecular Weight	166.131
Flash Point	217.3±20.5 °C
Exact Mass	166.026611
PSA	74.60000
LogP	1.66
Vapour Pressure	0.0±1.0 mmHg at 25°C
Index of Refraction	1.618
Stability	Stable. Incompatible with strong oxidizing agents, strong bases.
Water Solubility	0.01 g/100 mL (25 ºC)

REFERENCE :: 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,317,1986 ** ACUTE TOXICITY DATA **

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,317,1986

TOXIC EFFECTS :: Behavioral - somnolence (general depressed activity) Behavioral - excitement Nutritional and Gross Metabolic - body temperature decrease

REFERENCE :: COREAF Comptes Rendus Hebdomadaires des Seances, Academie des Sciences. (Paris, France) V.1-261, 1835-1965. For publisher information, see CRASEV. Volume(issue)/page/year: 246,851,1958 *** REVIEWS *** TOXICOLOGY REVIEW BPCT** Progress Report from the Environmental Protection Agency to NIOSH on Benzenepolycarboxylates, 1974 Volume(issue)/page/year: -,183,1974 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-RUSSIA:STEL 0.2 mg/m3;Skin JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 82897 No. of Facilities: 3665 (estimated) No. of Industries: 67 No. of Occupations: 68 No. of Employees: 55161 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 82897 No. of Facilities: 8709 (estimated) No. of Industries: 59 No. of Occupations: 49 No. of Employees: 117411 (estimated) No. of Female Employees: 17858 (estimated)

Personal Protective Equipment	Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes	Xi:Irritant
Risk Phrases	R36/37/38
Safety Phrases	S24/25-S36-S26
RIDADR	NONH for all modes of transport
WGK Germany	2
RTECS	NT2007000
HS Code	29173980

HS Code	2917391000
Summary	2917391000 isophthalic acid。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。Lowest tariff:6.5%。General tariff:30.0%