Chemical Name : Purified Isophthalic Acid
CAS No. : 121-91-5
Molecular Formula : C₈H₆O₄
Molecular Weight : 166.13 g/mol
Appearance : White crystalline powder
Formula : C₈H₄O₃
Appearance : White crystalline flakes / needles or molten liquid
Melting Point : 130–132 °C
Boiling Point : ~284 °C
Solubility : Hydrolyzes in water to form phthalic acid
Flash Point : ~152 °C (combustible)
Appearance: Colorless or white solid (crystalline or pellet)
Melting Point: 52.8 °C
Solubility: Soluble in water (forms maleic acid)
Odor: Acrid, choking
Chemical Name : Purified Isophthalic Acid
Abbreviation : PIA / IPA
CAS No. : 121-91-5
Molecular Formula : C₈H₆O₄
Molecular Weight : 166.13 g/mol
Appearance : White crystalline powder
Brand:Everlight
CAS NO.: 104810-48-2 ; 104810-47-1 ; 25322-68-3
Appearance: Yellow to light brown liquid
Dynamic Viscosity at 20ºC : 7300-8000 mPa.s
Density at 20ºC : 1.17 g/cm3
Brand：Everlight Chemical
Appearance: Slightly yellowish liquid
Butylcarbitol : >50
Butyl acetate : >50
Xylene : >50
1-Methoxy-2-propylacetate : >50
MEK : >50
Water : < 0.1
Brand:HUNTSMAN
Appearance：Colorless to pale yellow liquid with slight haze permitted
Color, Pt-Co：25 max.
Primary amine, % of total amine：97 min.
Total amine, meq/g：7.6-8.2
Water, wt%：0.2 max
Brand：AOC
Appearance：clear
Viscosity, 23°C：260 – 300 mPa.s
Solids content, IR：64.0 – 67.0%
Gel time from 25 to 35°C：42 – 47 minutes
Cure time from 25°C to peak：52-56 minutes
Peak temperature：120 – 150 °C
Brand：Sika
Aspect：liquid
Colour：light amber
Viscosity at 25°C (mPa.s)：15
Density at 25°C：0.95
Brand：Sika
Aspect：liquid
Colour：light amber
Viscosity at 25°C (mPa.s)：1100
Density at 25°C：1.16
Brand:CCP
Appearance：Liquid
Equivalent WPE：185-195
Color, Max Gardner：≦50（APHA）Max
Specific Gravity（25℃）：1.15-1.18
Viscosity（25℃ Gardner）：11000-15000
Brand:KUODO
EEW(g/eq):184-190
Viscosity(cps at 25°C):11,500-13,50
Hy-Cl(wt.%):0.05 max.
Specific Gravity*1(20°C):1.1
Brand:SANMU
Appearance：Transparent liquid, free of visible mechanical impurities
Epoxy equivalent (g / eq)：184-194
Viscosity (mPa.s/25°C): 11500-15000
Hydrolyzable Chloride (%): ≤0.10
Inorganic Chloride (ppm): ≤5
Volatile Content (%): ≤0.18
Color (APHA): ≤60
Brand:SANMU
Appearance：transparent solid
Epoxy equivalent (g / eq)：210-240
Softening point (℃)：14-23
Hydrolyzing chloride (%)：0.5
Inorganic chlorine (ppm)：100
Volatiles (%)：0.6
Color (Gardner method)：1.0
Brand:SANMU
Appearance：transparent solid
Epoxy equivalent (g / eq)：450-560
Softening point (℃)：60-76
Hydrolyzing chloride (%)：0.2
Inorganic chlorine (ppm)：100
Volatiles (%)：0.5
Color (Gardner method)：1.0
Brand:SINOCHEM HOLDINGS
Appearance：Solid, no mechanical impurities
Colour and lustre (Gardner)：2 the following
Epoxy equivalent (g/mol)：1750-2100
Viscosity at 25℃ (Gardner)：Y-Z1
Brand:SINOCHEM HOLDINGS
Appearance：Solid
Mechanical impurity：No
Color (Gardner)：2 Max(2)
Epoxy Equivalent (g/mol)：450-500
Brand:SINOCHEM HOLDINGS
Appearance：Clear liquid, no visible mechanical impurity
Colour (Hazen)：40 Max
Epoxy Equivalent (g/mol)：210-230
Hydrolytic Chlorine (%)：0.05 Max
Inorg.Cl （mg/kg：50 Max
Volatile /150℃,40min (%)：0.60 Max
Softening Point (℃ )：14-23
Brand:SINOCHEM HOLDINGS
Appearance：Clear liquid, no visible mechanical impurity
Colour (Hazen)：40 Max
Epoxy Equivalent (g/mol)：175～185
Inorganic Chlorine (mg/kg)：50 Max
Hydrolytic Chlorine (%)：0.050 Max
Volatile /150℃,40min (%)：0.50 Max
Viscosity/25 (mPa.s) ℃：8000～11000
Brand:SINOCHEM HOLDINGS
Appearance：Clear liquid, no visible mechanical impurity
Colour (Hazen)：40 Max
Epoxy Equivalent (g/mol)：184～195
Hydrolytic Chlorine (%)：0.20 Max
Inorganic Chlorine (mg/kg)：50 Max
Volatile /150℃,40min (%)：0.50 Max
Viscosity/25 (mPa.s) ℃：10000-16000
Brand:Dow
Epoxide Equivalent Weight (g/eq)：182 – 192
Epoxide Percentage (%)：22.4 – 23.6
Epoxide Group Content (mmol/kg)：5200 – 5500
Color (Platinum Cobalt)：75 Max.
Viscosity @ 25°C (mPa•s)：11000 – 14000
Hydrolyzable Chloride Content (ppm)：500 Max.
Shelf Life (Months)：24
Brand: RESONAC
Tensile Strength: 69~89 MPa
Tensile Elongation at break: 4.0~5.0 %
Flexural Strength: 130~140 MPa
Flexural Modulus: 2.7~3.1 GPa
Heat Distortion Temperature:100~110 ℃
Barcol Hardness:40
Volume Shrinkage:7.5~8.5%
Brand: INEOS
Density:80g/cm<sup>3</sup>
Flash point：38 ℃
Main application: FRP gel coat repair, topcoat preparation, fiberglass surface refinishing
Brand: INEOS
Property at 23 °C
Viscosity, Brookfield RV2, 10 rpm:1200 mPas at ISO 2555
Viscosity, cone&plate:320 mPas at ISO 2884
Styrene content: 44% at ISO 4864
Density:1.1 kg/dm3 at ISO 2811
Geltime, 1,5% MEKP-50:35 min at D006
Peak exotherm, 1% MEKP-50:170 °C at D006
