Document bd55JOk8j9K7jjXVwaoOO6q0

Vista Chemical Company 900 Threadneedle Houston, Texas 77079-2990 (713) 588-3000 P.O. Box 19029 Houston, Texas 77224-9029 Fax (713) 588-3236 October 2, 1990 TGG: JCL: ERT: MJH: National Sanitation Foundation 3475 Plymouth Road P. 0. Box 1468 Ann Arbor, Michigan 48106 XF: ____________ Attention: Kathy Feist Dear Kathy: Attached is a Section B review form for Vista Hydrochloric Acid. This is being submitted in support of an application by Crompton & Knowles Corporation, Dyes & Chemical Division. Sincerely, Thomas G. Grumbles, C.I.H. Manager Environmental Affairs dlj cc: R. R. Cooley VVV 000011240 initial 'I NSF Std. 60/61 Listed NSF USE ONLY ( j Document Control Code. ________ Company No. ____________________ Accepted By __________________ TOXICOLOGY DATA REVIEW SUBMISSION - SECTION NATIONAL SANITATION FOUNDATION STANDARD 60 DRINKING WATER ADDITIVES (CONFIDENTIAL INFORMATION) B SECTION B. TO BE COMPLETED BY SUPPLIER, unless the ingredient is NSF Standard 60- or 61-Listed. (See instructions belore completing). Supplier name Vista Chemical Company Address900 Threadneedle __________Houston, Texas 77079_________________________________________________ Name/Teiephone number of Supplier contact Tom Grumbles 713-538-3445 Plant location/address 3441 Fairfield Road Baltimore, HP 21226 Name/Telephone number of plant contact Je Gregg 301 354 5964 i. Name ot chemical (use nomenclature adopted by Chemical Abstracts) hydrochloric acid_________________________________ 2. Chemical Abstracts Services (CAS) number (if applicable) 7647-01-0 3. Trade name _______ Muriatic Acid ___________________________________ 4. Structural formula (if applicable) Not applicable - water solution of HCL 6. Molecular weight (average molecular weight distribution, if polymer) 36.5 VVV 000011241 1 of 8 O 01/31/89 Std60B Document control code (NSF use) 6. Describe the method of manufacture of the ingredient listed above. Specify chemicals used in the manufacturing process. If the ingredient is synthesized, give reactants, catalysts, process aids, etc. If the ingredient is mined, give chemicals used in the processing and purification, etc. (Use additional pages as necessary). See Attachment I 7. Composition of formulation and related information: List suppliers and chemical names of materials, ingredients, reactants. Place an M,I,R,P in the column marked ( ) to indicate if the chemicals shown below are Materials, Ingredients, Reactants, or Processing aids. Include manufacturing tolerances for parts by weight (percent composition). ( ) Trade Name Chemical Description CAS No. Parts by Weight (%, ppm) Supplier 1 Hydrogen chloride HC1 M Prouss R Chlorine Water - H2O Cl2 P Activated Carbon Carbon R Benzene C6H6 R Paraffin M Aluminum chloride AICI3 | | ' 32% 68% <1 ppm PPG, Olin, Occiden <, 1 DDm Envirotrol OOppb Texaco, Sun < 1 pPtr Vista Lake Charles < l opm Vanchlor, Witco, Welland VVV 00001124 ATTACH KNOWN METHOD(S) OF ANALYSIS FOR FORMULATION OR INGREDIENTS. IF AVAILABLE 2 Of 8 O 01/31/89 StdfiOB ATTACHMENT 1 VISTA PROCESS DESCRIPTION - HYDROCHLORIC ACID PRODUCTION Vista's NALKYLENE* alkylate process is a proprietary process which reacts normal paraffins with chlorine to produce chloroparaffin and then alkylates benzene with the chloroparaffin in a Friedel-Crafts reaction catalyzed with aluminum chloride. Both the chlorination and alkylation reaction liberate HC1 gas which is absorbed in water to produce hydrochloric acid. The hydrochloric acid is then subjected to multiple purification steps before being sold. A more complete description of the hydrochloric acid production and purification production and purification process at the Vista plant is as follows: CHLORINATION STEP The major feedstocks to the chlorination section of the Vista NALKYLENE* process are normal paraffins in the decane to dodecane range and chlorine. Chlorine is fed into a chlorination reactor where it reacts with liquid paraffin to form chloroparaffin. The chlorination step liberates gaseous HC1 by the following reaction: H ch3(ch2)8ch3 + ci2 --^ ch3-c-(ch2)7-ch3 + HCl Cl Off-gas from the chlorination reactor is sent through a chlorine absorber where normal paraffin is used to react with any chlorine residual in the off gas. Chlorine free HCl off-gas flows from the chlorine absorber to the HCl purification/absorption section of the process. ALKYLATION STEF The chloroparaffin from the chlorination section of the Vista NALKYLENE* alkylate process flows to the alkylation section and is reacted with benzene and follows the typical Friedel-Crafts reaction where anhydrous aluminum chloride acts as the catalyst. The alkylation section also liberates HCl gas by the following reaction: H ch3-c-(ch2)7-ch3 + c6h6 ^CH3-C-(CH2)7-CH3 + HCl Cl C6H6 The HCl gas from the alkylation reaction is separated from the crude alkylation reaction liquid under a slight vacuum in order to remove as much HCl as possible. The HCl off-gas is compressed and fed to the HCl purification/absorption section of the process. WV 000011243 HC1 PURIFICATION/ABSORPTION Since the alkylation reaction is carried out in the presence of excess benzene, the off-gas from the alkylation section contains benzene as well as HC1. There is also a limited quantity of benzene in the chlorination section off-gas. During the initial step of the HC1 purification/absorption process the benzene concentration in the HCl off-gas streams is greatly reduced by contacting the combined chlorination/alkylation off-gas streams with chloroparaffin in an absorption tower. The chloroparaffin absorbs benzene. The HCl gas is then sent to a second absorption process where fresh water is used to absorb the HCl gas to form hydrochloric acid. The chloroparaffin stream is sent to the alkylation reaction section. Fresh water is used in a two stage falling film absorption process to convert the HCl gas into hydrochloric acid. Final scrubbers remove any residual HCl from the inert gases which were present in the off-gas HCl prior to their venting to the atmosphere. The crude hydrochloric acid product is sent to the acid purification section. HYDROCHLORIC ACID PURIFICATION The crude hydrochloric acid from the acid absorption process contains about 1000 ppm of organic contaminants, therefore, additional purification is required to produce a final hydro-chloric acid product. Purification is accomplished in two steps by first contacting the hydrochloric acid with pure paraffin feedstock in a two stage contact/separation step and then final filtration with activated carbon. A pure paraffin stream is contacted with the hydrochloric acid and then separated from the acid in a coalescing filter/separation vessel. Two vessels are used in series to get the optimum contact and separation, the pure paraffin stream absorbs benzene and other organic contaminants from the hydrochloric acid. It is however, almost completely insoluble in acid itself. Therefore, the total organic content of the hydrochloric acid is reduced to about 10 ppm after this step. The final carbon filtration step reduces the total organic concentration to less than 0.1 ppm (by hexane extraction analysis) and the benzene concentration to less than 0.05 ppm (by photo ionization detector chromatograph). To summarize the byproduct hydrochloric acid produced by the process described above will contain less than 0.1 ppm of total extractable organics and less than 0.05 ppm benzene. vvv 000011244 8 Has the purity or expected purity range of the ingredient been determined? X yes _____ no _____ unknown to this Company tf yes. specify the purity or expected purity range 31.45 to 32.75% HCL 9. Specify known or suspected impurities in the ingredient including, but not limited to: unreacted starting materials, impurities in the starting materials, products of side reactions, and low molecular weight polymer fractions. See Attachment II________________________ tO. If the ingredient is not intended to be dissolved in drinking water, has the water solubility been determined? yes __________ no X unknown to this Company riot applicable If yes, soecify the water solubility. Include the temperature and pH conditions under which the solubility was determined. 11. If the PROOUCT is not intended to be dissolved in drinking water, has migration/extraction of any INGREQIENT from the product to water (or other solvent) been determined? yes ___________no X Unknown to this Company hot applicable If yes. attach report or complete the following information. If information is available for more than one ingredient, attach the relevant report or copy this page for each ingredient. Ingredient______________________________________________________ Product or form in which the ingredient was testeo____________________ Amount tested Concentration of ingredient Solvent Amount of solvent Temperature of test pH of test Duration of test___________________________ ________________________ Method of ingredient analysis____________________________________________ Detection limit of method _______ Sensitivity of method_____________________________________________________ Level of ingredient migrating/extracbng__________________________________ 12. If the PRODUCT is not intended fo be dissolved in drinking water, has migration/extraction of an IMPURITY in any ingredient from the product to water (or other solvent) been determined? yes no X___ Unknown to this Company _____ not applicable If yes. attach report or complete the following information. If information is available for more than one impurity, attach the relevant report or copy this page for each impurity. Impurity____________________ _________________________________________________ Product or form in which the ingredient was tested______________________ Amount tested Concentration of ingredient (Continued next page) VVV 00001X245 3 of 8 O 01/31/89 StdSOB ATTACHMENT II QUESTION 9 RESPONSE Unreacted Starting ______Materials Chlorine (<1 ppm)* Impurities In Starting Materials Aluminum (<1 ppm) Calcium (16 ppm) Iron (<1 ppm) Magnesium (5 ppm) Sodium (6 ppm) Chloroform (<20 ppb) 1-2 Dichloroethane (<100 ppb) Methy Chloride (0.6 ppm) Methylene Chloride (40 ppb) Chloroethane (25 ppb) Other Contaminants Benzene (<10 ppb) Toluene (<25 ppb) * Typical concentration in Hydrochloric Acid Product ppm = parts per million ppb = parts per billion VVV 000011246 Document control code (NSF use)________________ SolventAmount of solvent Temperature of test pH of test________________________________________________________________ _ Duration of lest__ _____________________________ ________________________________ __ Method of impurity analysis_______ ______________________________________________ Detection limit of method Sensitivity of method__________________________________ _____________________________ Level of impurity migrating/extracting________ 13. If a contaminant (product, material, ingredient, reactant, or impurity) has received prior acceptance or clearance, please list contammam(s) and cite specific acceptance reference (e.g. Title 21 Code of Federal Regulations, with appropriate section and paragraph number. Food Chemicals Codex. US Environmental Protection Agency National Primary Drinking Water Regulations). If a Maximum Contaminant Level (MCL) has been determined under the USEPA National Primary Drinking Water Regulations, please list the MCL. Contaminant (Prod., material. ingred.. impurity) Acceptance Reference Use Restrictions Level in Drinking Water' 1 2 3_____________________________ . See Attachment III 5 6 7 8 9 10 14. If any material, ingredient, or other chemical introduced into drinking water as a result of product use should be exempt from toxicology evaluation, please specify and PROVIDE JUSTIFICATION (e.g. non-migratory, no residual. MCL available).__________________________________ NOTE: IF ITEMS 13 AND/OR 14 ADDRESS ALL MATERIALS. INGREDIENTS. REACTANTS. AND IMPURITIES IN THE PRODUCT, THEN SKIP ITEMS 15. 16, 17. AND GO TO ITEM 18. 00001124-7 1 Anticipated level in drinking water based on the Evaluation Dose as described in Standard 60. and using accepted methods as described in Standard 60. Appendix B. 4 of 8 O 01/31/89 Std60B ATTACHMENT III QUESTION 13 RESPONSE ACCEPTANCE REFERENCES FOR PRODUCT AND CONTAMINANTS PRODUCT 1. FCC Hydrochloric Acid Monograph - 3rd Edition Specific limits: Benzene <0.05 mg/kg Extractable Organic Compounds <5mg/kg (non-fluorine containing) 2. FDA 21 CFR 182.1057 Hydrochloric Acid is multiple Purpose GRAS Food Substance when used as butter and neutralizing agent. CONTAMINANTS 1. Benzene 2. 1-2 Dichlo roe thane U.S. EPA Primary Drinking Water Standard (MCL) U.S. EPA Primary Drinking Water Standard (MCL) 5 Mg/1 5 Mg/1 3. Methylene Chloride U.S. EPA Primary Drinking Water Standard (MCL) 5 Mg/1 (proposed 1990) 4. Chloroform U.S. EPA Primary Drinking Water Standard (MCL) (Included in total Trihalomethane limits of 0.1 Mg/1) VVV 000011248 Document control code (NSF use)________ 15. The anttcipated exposure level will dictate toxicology testing requirements. NSF may require complete copies of all toxicity reports. Please list the specific toxicology studies and dates conducted, the results of which are to be used in support of the product application. Toxicology studies may describe the potential toxicity of the product, or of a particular material, ingredient, or extraction mixture appropriate to the application. (Use additional pages, if necessary.) Mutagenicity (Specify Ames, chromosomal aberration, etc.) Type of study__________________ __________________________________________________________________ __ Report title Report date/Journal reference__ Author or conducting laboratory Type of study___________________ Report title Reoort date/Journal reference__ Author or conducting laboratory Acute toxicity Type of study ' ________ _______________ Report title__________________________________________________________________________________________________ Report date/Journal reference___________________________ ___________________________________________________ Author or conducting laboratory_______________________ Type of study ' ________________________________________________________________________ Reoort title____.___________________ Report date/Journal reference. _________________________________________________________________ Author or conducting laboratory^.____________________ Subchromc toxicity Type of study Report title_______________________________________________________________________________________________________ Report date/Journal relerence__________________________________________________________________________________ Author or conducting laboratory _____ ___________ Type of study________________________________________________________________ Report title ~ ~~ Report date/Journal reference ____________________________ Author or conducting laboratory___________________________________ ___________________ ______________ ____________ VVV 0000112*9 5 of a o 01/31/89 S1060B Document control code (NSF use) Reproductive/developmentai toxicity Type of study__________________ _________ ___________ Report title______________ ____ ____________________________________ Report date/Journal reference___________________________________ Author or conducting laboratory________________________________ Type of study_____ __ ___________________________________________ Report title_______ _____________________________________________ Report date/Journal reference__________________________________ _ Author or conducting laboratory_________________________________ Teratology Type of study_________________________________________________ _ Report title _________ __________________________________ ______ Report date/Journal reference__________________________________ Author or conducting laboratory________________________________ Type of study. : : Report title_________________________________________________ ; Report date/Journal reference_______________________.. Author or conducting laboratory_____________________ ______ Chronic toxicity/carcmogemcity Type of study________________ Report title____________________________ ^______ Report date/Journal reference__________________________________ Author or conducting laboratory________ Type of study . _____________________________________ Report title_____________________ Report date/Journal reference__________________________________ Author or conducting laboratory________________________________ Supplemental studies (specify metabolism, neurotoxicity, etc.) Type of study__________________________________________________ Report title_____________________________________________________ Report date/Journal reference__________________________________ Author or conducting laboratory_______________________________ 6 of 8 VW 000011250 O 01/31/89 Std60B Type of study Report title__________ __________ Report date/Journal reference__ Author or conducting laboratory Type of study__________________ Report title _______________ Report date/Journal reference__ Author or conducting laboratory Document control code (NSF use) 16 if a toxicology literature search has been conducted, please list the databases, database files, and the key words searched. Attach a copy of the search results. DATABASE FILE KEY WORD STRINGS 7 of 8 VVV OOOO1125L O 01/31/89 Std608 17. Additional information sources Document control code (NSF use) IQ. Please describe or attach any additional pertinent information, positive or negative, that you believe would contribute to a complete toxicologic evaluation of the product or ingredient. 19. Additional attachments? ___ no X yes Number of attachments 3 bst attachments l_____________ No. of pages ___ (2 ) 21 3- _J 20. Supplier certification: I hereby certify that the information provided is accurate and complete, and that I, and the Company I represent, know of no reason the product described herein should not be used in contact with drinking water. Company name_____________Vista Chemical Company____________________________________________________ Phone __________________Telex.FAX 713-588-3456 (The following authorization *s OPTIONAL. It in no way authorizes NSF to share the information with other Suppliers or Applicants. Authorized NSF staff ONLY wilt be allowed access to this information.) f give the National Sanitation Foundation permission to use the information contained in this TORS Part B application as a basis for reviewing/accepting other products which use the ingredient/material/ product covered by this application. Stgnature/Title____________________________ Insert completed form in the Confidential Business Information envelope provided, seal the confidential envelope in an outer envelope, and return to: Additives Toxicology Group NATIONAL SANITATION FOUNDATION P.O. Box 1468 Ann Arbor. Ml 48106 VVV 000011252 8 of 8 O 01/31/89 Std60B