Document gbq8k5Oox1x5J1nn6R36vBGX9

i NAVAL RESEARCH L A B O R A T O R Y WASHINGTON, D.C. 20375 IN R E P L Y R V F E a TO: 6180-96:HBP:bh 3 M a r c h 1977 'r * Major B . Pease/DO A i r Force C i v i l E n g i n e e r i n g C e n t e r Tyndall AFB, FL 32401 Dear Major Pease : ' . In regard to progress on the Improved Environmental Proper ties for AFFF the following is reported: ' 1. The DCASMA Milwaukee, which is the contract adminis tration office for the contract with the Ansul Co. , investigated the reason for the delay in AFFF material originally scheduled for 29 December 1976. They found that the toxicity testing to be done by the 'Wisconsin Research Foundation was the cause of the delay. The new delivery date is now mid-March. 2. The Ansul Company has been conducting other studies under the contract with NRL. A copy of the most recent progress report in forwarded as enclosure (1). ' 3. The delay in delivery of material by Ansul necessitates a change in the original milestone chart. A revised chart is forwarded as enclosure (2). ` f`' j. : [j r .1 Enel (1) and (2) Henry B .. Peterson, Head Fire Suppression Combustion and Fuels .Branch Code 6180, Chemistrv Division Distribution Authorized to US Government Agencies and their Contractors Only; All other requests shall be forwarded to: Commanding Officer Naval Research Laboratory, Wash. DC. THIS INFORMATION HAS NOT BEEN APPROVED FOR PUBLIC RELEASE. US00000151 CONTRACT N O 0 1 7 3 - 7 6 - C - 0 2 9 5 interim Progress Report A series of three fluorochcmical surfactants, three hydrocarbon sur factants and three binary solvent compositions were s e le c te d as the components for an environmentally improved APFF m o d e l. Initial screening at three dilutions showed insignificant concentration dependent so a check at dilutions of 1 :1 2 ,5 0 0 and 1 : 5 ,0 0 0 was in vestigated for a ll candidate materials. The results of th is in v e stig a tio n were as follows: Materia 1 Lodyne S-105 Lodyne S-105 Lodyne S-110 Lodyne S-110 Lodyne S-116 Lodyne S-116 Deriphat D-160C Deriphat D-160C Conco EL-30 Gonco EL-30 Tergitol 15-S-12 ^Solvent System A *Solvent System B ^Solvent System C Dilution 1:12,500 1:5,000 1: 12,500 1:5,000 1: 12,500 1 :5 , 000 1 : 12,500 1:5,000 1:12,500 1:5,000 ' 1 : 12,500 1:8,333 1:8,33 3 1:8,333 COD fmgms/l) 776,- 875 780, 850 498, 000 539, 950 358, 500 509, 950 5 9 7 , 625 669, 300 507, 750 5 33 , 850 2 , 1 0 1 , 5 00 2 ,0 6 4 , 917 J ,789 , 428 1 ,9 2 2 , 203 A - Butoxy-ethoxy-propanol-2/Hexylene glycol B - Propasol B/Ethylene glycol C - Butyl carbitol/Propylene nlycoi The r e s u l t s of th.is co ncentration study led to the c o n c l u s i o n th at a t t h e s e d i l u t i w levels no concentration dependence o c c u r r e d . re c a n d i d a t e m a t e r i a l s c e e i i D - are a s fed lo w s: Oo r.o Distribution Authorized to US Government Agencies and their Contractors Only; '1* All other reauests shall be forwarded to: Commanding Officer Naval Research Laboratory, Wash. DC. THIS INFORMATION HAS NOT BEEN APPROVED FOR PUBLIC RELEASE. US00000152 Material Lodyne S-105 Lodyne S-110 Lodyne S- 1 1 6 Derip!mb D - 1 6 0 C Conco L'L-30 Tergitol 15-S-12 Solvent Syr'em A Solvent System B Solvent System C BOP] 1 .443 .245 .118 .336 .458 .150 .444 1.070 1.109 . b o d 15 .409 .272 .059 .378 .423 .111 .440 .716 .701 BOD20 .430 .286 .103 .431 .407 .121 .517 .957 .899 Some problems have been encountered with the sch e d u lin g of fish to x ic it y studies using outside testing laboratories . The follow ing compounds have been investigated and LC^q , values for fat head minnows at 96 hour exposure determined. Materia 1 LC50- (ppm) Butyl carbitol Propasol B Propylene glycol Hexylene glycol Tergitol 15-S-12 Lodyne S-105 Lodyne S - 1 1 0 2,500 1,000 10,000 1,700 ,4.0 > 1,000 > 1,000 The remaining compounds are under investigation and re su lts will be available by March 15. . ". An a l t e r n a t i v e method for determining AIT I' so lu ti o n c o m p o s i t i o n is b e in g in v e s tig a te d . This would replace the existing re fr a c tiv e index method which persently is used and requires solvent le v e ls of 15-20% (wt.) for the required a c c u r a c y . The now method i s based upon chemical in dicators in the ppm range used with, the -AFTF.concentrate an. c a p a b l e of being d etected in dilute solutions of AFFF sp ectro p h o to m etries! Jy . To date th e a ccu ra cy of this method is significantly better than th e refractive index method. Commercially available, portable UV-visible spectrophotometers are being e va lu at e d along with co m p etitive GPL a pp ro v ed AFFF c o n c e n t r a t e s to detO! mi n e the ap p licab ility of this method. US00000153 Final AFFF formulation evalu ati on ha s b e e n d e la y e d due to the- fish to x i c i t y scheduli.no problem is well a s trie problem of conducting reproducible fire performance to. i s duo to the unused ly cold weather. This project will be delayed approximately S 0-120 days beyond the s c !-' ,tilled c o m pl et io n d a t e . JFRtdms 2/21/77 US00000154 IMPROVED ENVIRONMENTAL IMPACT PROPERTIES FOR AFFF MATERIALS FY YEAR 1 9 7 7 . OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SET Work by manufacturer to evaluate properties of individual compo nents of AFFF and s'apply an improved formulation NRL evaluation of new product for fire performance, stability, corrosion, and compa tibility v/ith existing oroducts i:valuation of environmental properties of new product -- ...... . -- Q O Review of Data obtained for direction of further development work and/or inclusion of now requirements in MIL SPEC Enel (2) to NRL Itr 6180-96:HEP:bh US00000155