Solvent comparison Eastman Omnia high-performance solvent versus d-limonene in aqueous cleaning applications

Transcription

1 Solvent comprison Estmn Omni high-performnce solvent versus d-limonene in queous clening pplictions Solvent selection for clening pplictions requires diligence. Tody s focus on regultory nd sustinbility improvement obligtes those in the vlue chin to consider not only performnce requirements but helth nd sfety spects s well. An rgument tht is gining populrity is the source of the solvent mteril, whether it be petroleum or biobsed. In this pper, we investigte the differences tht exist between Estmn Omni high-performnce solvent nd d-limonene. There re some notble differences between the two, including the chemistry of ech molecule, the production feedstock, nd HSE listings. Tble 1. Properties nd listings Evportion rte n-buoac = 1 Density 20 C Wter solubility In wter, 20 C Wter in, 20 C Solvent Rw mteril Solvent fmily Solvent type feedstock Omni Ester lcohol Oxygented Petroleum Y LVP- VOC, Y/N SCIL list rting d-limonene Terpene Hydrocrbon Citrus oil Ins. Ins. N Emulsifiction There re mny fctors tht influence solvent selection; one of the first being the end-use environment of the formultion. The continuous phse cn be orgnic, crbon contining, or queous, which simply mens wter. This requires the formultor to mke decision on the level of miscibility the solvent hs within the continuous phse. If there is low or no miscibility between the solvent nd continuous phse, surfctnts will be needed to emulsify the two to mke homogeneous single-phse solution. Emulsifiers, often clled surfctnts, come in four different types bsed on the counterion chrge ssocited with the hed portion of the compound. Tble 2. Surfctnt informtion Surfctnt type Chrge Common exmple Nonionic None Alcohol ethoxylte Anionic ( ) Negtive Alkyl ether sulfte Ctionic (+) Positive Quternry, or qut Amphoteric ( ) Negtive & (+) positive b Sodium lknote Nonionic surfctnts re differentited by HLB (hydrophilic-lipophilic blnce), which is scle rnging from being very lipophilic (ft loving), nd 20 being very hydrophilic (wter loving). b Zwitterionic hving both positive nd negtive chrge depending on the cidity or lklinity of the solution

2 Mking cler, stble emulsion is dependent on the surfctnt choice, HLB, continuous phse, nd solvent miscibility in tht phse. Both Estmn Omni high-performnce solvent nd d-limonene, individully nd blended, were plced in n emulsion, nd the mount of surfctnt needed to chieve stbility ws compred. Tble 3. Nonionic/mphoteric-contining emulsions Formultion Component A B C Omni, % d-limonene, % Nonionic surfctnt, % Anionic surfctnt, b % Wter, % Cler, Y/N Y Y Y Multiplier c Alcohol ethoxylte b Sodium luriminodipropionte c Amount of mphoteric surfctnt dded, reltive to Formultion A, to chieve clrity When creting stble emulsion using nonionic/mphoteric surfctnt pir, Omni shows n dvntge in the mount of surfctnt needed to mke cler nd single-phse formultion. This lso shows reduction in surfctnt usge s Omni is blended into d-limonene formultions. The mount of mphoteric surfctnt needed to emulsify the d-limonenecontining solution increses exponentilly with no Omni present. The trend continues for the nonionic/nionic-contining formultions, seen in Tble 4, lthough not s severe. Tble 4. Nonionic/nionic-contining emulsions Formultion Component D E F Omni, % d-limonene, % Nonionic surfctnt, % Anionic surfctnt, b % Wter, % Cler, Y/N Y Y Y Multiplier c Alcohol ethoxylte b Alkyl luryl sulfte c Amount of nionic surfctnt dded, reltive to Formultion D, to chieve clrity

3 Performnce evlution Clening efficcy cn be evluted using different methods, from brsive scrubbing to sit nd sok. We mke use of two such methods to test the performnce of different formultions. The presence of different energy inputs nd testing environments provides more blnced testing pproch. Scrub test method Figure 1. Augmented MEK double-rub scrub mchine (For more informtion, visit Using this method, we cn ssess differences on porous nd nonporous substrtes like vinyl tile, pinted wllbord, nd luminum. These substrtes cn be soiled with nything from trry soil to sop scum, gresy soil, or ink. The test records the number of scrubs to visul clenliness, with the lower number equling higher performnce nd 1000 scrub mximum. Figure 2. Scrub clening performnce compring Omni to d-limonene on vrious soil substrte combintions Soil Trry soil b Gresy soil c Sop scum d Substrte Wxed vinyl tile Aluminum Pinted wllbord Clening formultion contents: Solvent 2%, nonionic surfctnt 1.5%, nionic surfctnt 1.5%, cheltor 0.25%, ph djuster 0.1%, wter 95.25% b Proprietry mixture similr to n uto body undercoting c DCC-17/ASTM 4488D Soil d ASTM

4 The Omni-bsed formultion ws scrubbed to visul clenliness, nd the d-limonene-bsed formultion ws tested to the sme number of scrubs. However, if the d-limonene-bsed formultion hd posted lower scrub numbers (better performnce), tht difference would hve been noted. In ll three soil/substrte combintions, the Omni-bsed formultion outperformed the d-limonene-bsed formultion. Ultrsonic sit-nd-sok test method Figure 3. Ultrsonic bth with petri testing dishes (left); DCC-17 gresy soil pnel (right) This technique is designed for nonporous substrtes nd typiclly used in conjunction with gresy soil. Performnce dt is bsed on grvimetric nlysis of soil removed from n luminum pnel. The vlues re shown in weight percent (wt%) of the soil removed. Ech evlution is performed in duplicte to reduce vribility. The test works by fully submerging the soiled portion of the pnel in the clening solution, pplying ultrsonic energy to the clening solution for 2 minutes, removing the pnels, nd llowing them to dry before recording the (postclen) weight. Tble 5. Degresing formultions compring Omni to d-limonene using different solvent blends nd surfctnt combintions Formul A Formul B Omni/ surfctnt Omni/ surfctnt Omni/ Surfctnt Omni/ Component surfctnt surfctnt only surfctnt surfctnt Omni, % d-limonene, % Nonionic surfctnt, % Amphoteric surfctnt, % Anionic surfctnt, % Wter, % ph Stble Y N N Y Y N N Y Stble is defined s cler, single-phse solution not exhibiting cloudiness, biphsing, sedimenttion, or floccultion. Surfctnt only

5 The degresing formultions were tested using the ultrsonic method to yield the results seen in Figure 4. Figure 4. Degresing performnce evlution compring Omni to d-limonene in two different clening formultions Avg soil removed, wt% Omni/ surfctnts Omni/ surfctnts Actives blend surfctnts Surfctnts only Formul A Formul B The results show tht the nonionic/mphoteric-contining formultion consistently outperforms the nonionic/nionic-contining formultion. The results lso show tht the ddition of Estmn Omni high-performnce solvent increses the efficcy of the formultion no mtter the combintion of other ctives. Using Omni will enble better clening with less totl surfctnts nd cn increse efficcy when blended with cosolvent like d-limonene. Conclusion Mny vribles cn impct solvent selection for clening formultions. As seen from Estmn s internl testing, Omni shows mny dvntges over d-limonene, including higher performnce t equl use levels, greter emulsion stbility with less surfctnt, nd performnce cross rnge of soils nd substrtes. This cn trnslte into vlue ddition nd product differentition for the formultor. Some other potentil benefits of using Omni rther thn d-limonene include less GHS lbeling requirements due to lower irrittion risk nd combustibility versus the flmmble d-limonene. Along with tht, there is source relibility which Estmn provides to the customer. This llevites the fer of volume restrints or price voltility. The ppliction, end-user expecttions, nd regultory complince should ll be weighed when selecting solvent for clening formultion, but this informtion should be useful in mking n informed decision with regrds to queous emulsions. For more informtion, visit All results provided were generted from Estmn internl testing. Customers will need to perform their evlution nd use proper judgment to ensure the right solvent selection for their specific ppliction.

6 Estmn Chemicl Compny Corporte Hedqurters P.O. Box 431 Kingsport, TN U.S.A. U.S.A. nd Cnd, 800-EASTMAN ( ) Other Loctions, +(1) Although the informtion nd recommendtions set forth herein re presented in good fith, Estmn Chemicl Compny nd its subsidiries mke no representtions or wrrnties s to the completeness or ccurcy thereof. You must mke your own determintion of its suitbility nd completeness for your own use, for the protection of the environment, nd for the helth nd sfety of your employees nd purchsers of your products. Nothing contined herein is to be construed s recommendtion to use ny product, process, equipment, or formultion in conflict with ny ptent, nd we mke no representtions or wrrnties, express or implied, tht the use thereof will not infringe ny ptent. NO REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS OR IMPLIED, OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR OF ANY OTHER NATURE ARE MADE HEREUNDER WITH RESPECT TO INFORMATION OR THE PRODUCT TO WHICH INFORMATION REFERS AND NOTHING HEREIN WAIVES ANY OF THE SELLER S CONDITIONS OF SALE. Sfety Dt Sheets providing sfety precutions tht should be observed when hndling nd storing our products re vilble online or by request. You should obtin nd review vilble mteril sfety informtion before hndling our products. If ny mterils mentioned re not our products, pproprite industril hygiene nd other sfety precutions recommended by their mnufcturers should be observed Estmn Chemicl Compny. Estmn brnds referenced herein re trdemrks of Estmn Chemicl Compny or one of its subsidiries or re being used under license. The symbol denotes registered trdemrk sttus in the U.S.; mrks my lso be registered interntionlly. Non-Estmn brnds referenced herein re trdemrks of their respective owners. SOL-OM /16