COMPLIANCE INFO 1985 - Laserfiche WebLink

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,'Hard water can cause bine fog on photographic negatives, but this can be prevewc d by using sodium hexametaphosphate (Food grade) in the developer. The dispersion of mud, clay, etc., by sodium hexameta- phosphate is applied in the cleaning of water wells from which the output has been reduced by clogging of the strata. A solution of SHMP (40 kg per m3 of water in the well. or 401b for every 100 gallons) and calcium hypochlorite (10% of the weight of the SHMP) is added to the well and mixed with the water by operating the pump for short periods. Sodium hexametaphosphate may also be used for cleaning ion -exchange materials. An application of threshold treatment is in the cyanidation process for gold extraction. where low concentrations of sodium hexametaphosphate prevent the appearance of scale and the clogging of filter cloths. It has also been found that sodium hexametaphosphate vJill prevent the formation of calcium oxalate scale in evaporators coocenira,iing mimosa bark extract: about 0.05% on the v erci,t of finished extract is required When about 50 ppm sodium hexameiaphcsphate is present in the �%ater used for dissolving rock soft. the brine produced has a much to..er calcium sulphate content than it has •,vitt, untreated water. BPC grade sodium hexametaphosphate is used in analysis for deproieinizing, for example, in the deter- mination of vitamin C. Other analytical uses are vv:th the Folin and Ciocatfeu ,.reagent in the phosphatase test for milk rind in the Nessler test for ammonia in haid waters. 17-urther information on' applications v✓ill be given on request. - The Grades of Sodium Hexametaphosphate Sodium hexametaphosphate "'S"' Typical analysis: 67% P206. - .Physical form: glassy chips. 't `:Packing density: 1-2 g/cm3(75lb/f13). ' Packages: 50 kg steel drums or 50 kg multi -ply paper sacks. both with polythene liners. BPC %rid feed p,aerr I,r •.4,lible. t� Sodium hexametaphosphate Typical analysis 67'.t, 11.0,. PhysrC31 fOn,t UI, say Chrt» Packing density. 1 2 g/cm' (75 lb/ftp) Packages. 4. 12 5 kg cloth b,rt> packet, in either stool drums or multi ply paper sacks will, polythene finers Sodium hexametaphosphate "PT" Typical analysis: 671;• P.O.. Physical form: v. bile p_),,•�det Packing density. 1 d g/t,m3 (8� Wit-) Packages : 50 kg steel drums or 50 kg multi -ply paper sacks, both with polythene Inners BPC end ipc.1 p'r_'rs J --e •r�.r:Die. Sodium hexametaphosphate "PL This product is a mixture of -PT- grade with Small Quantities of sodium coibc ale and bicarbonate to raise the pH value to 0 251� Irrlui,on to 8.3-8 5. Packing density. 1 5 nfcni3 (91 Ib/ft3). Packages. 50 kg steel drums or 50 kg multi -ply paper ealre hnih with oolvihene lin,erc Sodium hexametaphosphate "A" This is "PT"" grade processed to make it more rapidly soluhle and free flowing. Dilute solutions are approxi- maloly neutral. Packing density : 0 8 g/m3 (50lb/ft3). Packages: 50 kg steel drums or 50 kg multi -ply paper sacks, both vJ Ih polythene liners. "Instant" Sodium hexametaphosphate This is a specially formulated preparation of complex phosphates developed for use in the laundry and textile industries. It is free-flowing and readily soluhle. The pH value in 1 % solution is 8.6-9. Pack=ng density: 0 88 g/crn3 (55 Ib/ft3). Packac'es : 50 keg multi -ply paper sacks with polythene liners. Health r,nd Safety Information Effect of heat Sodium hexametaphosphate does not burn or support combustion, but it will malt at approximately 600'C. Handling and fir;l-aid Sodium hezornolvphot,?llne 'S". "T" PT"" :r,d -A- ,0 ni utral in C`.- _,'1 Y:-hl!e 11-3 .PIr.• grades are very slightly elkalino. Normal stbnd:..rds of good housckeoping aro recommended. and flood industrial handling practice will avoid possible irritation to the eyes or respiratory tract which might result from excessive exposure. Sodium hexametaphosphate on the skin reduces the rate of btood-clotting from lesion:. Ingestion and inhalation are without hazard in normal industrial situations, and dust can be removed from the skin or clothing by brushing -off or washing with water. Any dust in the eye should be removed by flushing with clean water for at least ten minutes. and oral ingestion should be treated by drinking plenty of water. Medical advice should be sought after eye contamination. heavy ingestion or inhalation. Storage Sodium hexametaphosphate is hygroscopic and will pick up moisture frorrUl,e atmosphere to form a sticky mass. It should therefore be stored under cover in dry conditions. Part -emptied containers should be re- sealed after use. SpillDgo rind disposal Sp19ages of sDdrum hexamctaphusphate may be flushed safely to public sewers.