UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: April 19, 2011 4:00 P.M.
Form: S-4
CIK: 0001089748
Company Name: HUNTSMAN INTERNATIONAL LLC
File Number: 333-173106
CIK: 0001265875
Company Name: AIRSTAR CORP
File Number: 333-173106-21
CIK: 0001289517
Company Name: Huntsman Advanced Materials Americas LLC
File Number: 333-173106-20
CIK: 0001289518
Company Name: Huntsman Advanced Materials LLC
File Number: 333-173106-19
CIK: 0001266214
Company Name: HUNTSMAN AUSTRALIA INC
File Number: 333-173106-18
CIK: 0001265884
Company Name: HUNTSMAN CHEMICAL PURCHASING CO
File Number: 333-173106-17
CIK: 0001266216
Company Name: HUNTSMAN ENTERPRISES INC
File Number: 333-173106-16
CIK: 0001136815
Company Name: HUNTSMAN ETHYLENEAMINES LLC
File Number: 333-173106-15
CIK: 0001266209
Company Name: HUNTSMAN FUELS LLC
File Number: 333-173106-14
CIK: 0001092724
Company Name: HUNTSMAN INTERNATIONAL FINANCIAL LLC
File Number: 333-173106-13
CIK: 0001136816
Company Name: HUNTSMAN INTERNATIONAL FUELS LLC
File Number: 333-173106-12
CIK: 0001266210
Company Name: HUNTSMAN INTERNATIONAL TRADING CORP
File Number: 333-173106-11
CIK: 0001266224
Company Name: HUNTSMAN MA INVESTMENT CORP
File Number: 333-173106-10
CIK: 0001266225
Company Name: HUNTSMAN MA SERVICES CORP
File Number: 333-173106-09
CIK: 0001266203
Company Name: HUNTSMAN PETROCHEMICAL LLC
File Number: 333-173106-08
CIK: 0001265883
Company Name: HUNTSMAN PETROCHEMICAL PURCHASING CO
File Number: 333-173106-07
CIK: 0001266213
Company Name: HUNTSMAN PROCUREMENT CORP
File Number: 333-173106-06
CIK: 0001136818
Company Name: HUNTSMAN PROPYLENE OXIDE LLC
File Number: 333-173106-05
CIK: 0001266231
Company Name: HUNTSMAN PURCHASING LTD
File Number: 333-173106-04
CIK: 0001267163
Company Name: POLYMER MATERIALS INC
File Number: 333-173106-03
CIK: 0001092726
Company Name: TIOXIDE AMERICAS LLC
File Number: 333-173106-02
CIK: 0001092725
Company Name: TIOXIDE GROUP
File Number: 333-173106-01