19041         HEXANE





Product Description : CITGO'S Hexane is a low-boiling aliphatic solvent consisting primarily

                      of C6 saturated hydrocarbons. Hexane is a clear, colorless, flammable

                      liquid miscible with most common organic solvents and has a light

                      aliphatic odor. CITGO's Hexane is hydrotreated to reduce aromatics

                      and olefins and meets the definition of non-photochemically reactive

                      as defined by 66/3 Rule requirements. Hexane meets 21 CFR 175.105

                      requirements and ASTM D1836 specifications.

                      Please see the MSDS for safety/regulatory information.

                                                                            Typical       *ASTM

                                                                           Properties

Property Description                        Units         Specifications                 Test Method



 ACIDITY OF RESIDUE                                                          NEUTRAL           D-1093

 ANILINE POINT                              DEGF           140 MIN           148               D-611

 API GRAVITY (60/60 F)                      DEG API                          77.8              D-287

 AROMATIC CONTENT                           WT%            0.10 MAX          NIL               GC

 BENZENE CONTENT                            WT%            0.05 MAX          < 0.001           GC

 CARBONYL CONTENT                           PPM                              <2                D-1089

 CHLORIDE CONTENT                           PPM            10 MAX            <2                U0P779

 COLOR, SAYBOLT                                            +28 MIN           +30               D-156

 CORROSION, 3 HRS @ 122 F                                  1.2 MAX           1A                D-130

 CYCLOPARAFFINS                             VOL%                             14                GC

 DENSITY @ 60 F (15.6 C)                    LB/GAL                           5.63              D-287

 DISTILLATION RANGE                         DEGC           6.0 MAX           3.9               D-1078

 DISTILLATION, IBP                          DEGC           65.0 MIN          66.1              D-1078

 DISTILLATION, 50%                          DEGC                             66.5              D-1078

 DISTILLATION, DP                           DEGC           71.0 MAX          69.3              D-1078

 DOCTOR TEST                                                                 NEGATIVE          D-235

 EVAPORATION RATE(nBUAC=1)                                                   8.1               D-3539

 FLASH POINT (TCC)                          DEGF                             <0                D-56

 KAURI-BUTANOL VALUE (KB)                                                    29                D-1133

 N- HEXANE                                  VOL%                             43.8              GC

 NONVOLATILE RESIDUE                        g/100 ml       0.001 MAX         < 0.001           D-1353

 OLEFINS                                    PPM            25 MAX            6                 D-1159

 PARAFFINS                                  VOL%                             86                GC

 REFR INDEX (TYPICAL@ 20 C)                                                  1.3801            D-1218

 SOLUBILITY PARAMETER                       (cal/cc)1/2                      7.3

 SPECIFIC GRAVITY (60/60 F)                                0.665-0.685       0.675             D-287(cal'd)

 SULFUR CONTENT                             PPM            2.0 MAX           <1                D-5453

 VAPOR PRESSURE @ 20 C                      TORR                             140               D-5191

 VISCOSITY @ 20 C                           cSt                              0.50              D-445









 * American Society for Testing and Materials                                                  03/16/2004