Table Of Content

इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 10508 (2007): Phosphoric Acid, Food Grade [FAD 8: Food Additives] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” P &j@ IS 10508:2007 VRT%?J7m5 u \n I’(*II< *3Tw, wlw*-faRIR ( WFi’7p%FP7) Indian Standard PHOSPHORIC ACID, FOOD GRADE — SPECIFICATION (First Revision ) ICS67220.20 0 BIS2007 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELH I 110002 .Ir(n’cvllha 2007 Price Group 2 FoodAdditives Sectional Committee, FAD8 FOREWORD ThisIndianStandard (FirstRevision)wasadoptedbytheBureauofIndianStandards,afterthedraftfinalized bythe Food Additives Sectional Committeehadbeen approved bytheFood andAgriculture Division Council. Withtheincreasedproduction ofprocessed foods,manufacturershavestartedaddingalargenumberofsubstances, generally in small quantities, to improve the appearance, flavour, texture or storage properties of the processed foods. As impurities in these substances have been found to be harmful, it is necessary to have a strict quality control of these food additives. Phosphoric acid isused asanacidulant and ispermitted under the Prevention of Food Adulteration Rules, 1955.This standard would help inchecking purity which requires tobe checked atthe stage ofm~ufacture, for itisextremely difllcult (andinmanycasesimpossible) to detectthe impurity oncethese substances are added to the processed foods. Thisstandardwasfwstpublished in1983basedonthethenexistingJECFA‘Specificationandfoodchemicalcodex’ ofUSA. This standard isbeing revised taking intoconsideration the latestpublication forphosphoric acid issued byJECFA.Inthisrevision, thelimitfornitrates,volatile acids,chlorides andsulphateshavebeen included toalign withthe international requirements and methods oftest alsobeen revised andupdated. Due consideration has also been given to the Prevention of Food Adulteration Rules, 1955 and Standard of Weights & Measures (Packaged Commodities) Rules, 1977. However, this standard is subject to restrictions imposedunder these, wherever applicable. For the purpose of deciding whether a particular requirement of this standard iscomplied with, the final value, observedorcalculated, expressingtheresultofatestoranalysis,shallberounded offinaccordance withIS2:1960 ‘Rulesforrounding offnumerical values (revised)’. Thenumber of significant places retained inthe rounded off value should be the same asthat ofthe specified value inthis standard. IS 10508:2007 Indian Standard PHOSPHORIC ACID, FOOD GRADE — SPECIFICATION (First Revision ) 1 SCOPE Phosphoric acidisstronglyacidic,eveninhighdilution. Thisstandard prescribes therequirements andmethods 3.2 Test for Phosphate of sampling andtest for phosphoric acid, food grade. Neutralize afewmillilitres ofphosphoric acid and add 2REFERENCES dilutenitricacid Thenaddanequalvolumeofammonium molybdate solution and warm. Abright canary-yellow The following standards contain provisions which precipitate is obtained which is soluble in dilute through reference inthis text, constitute provisions of ammonia. this standard. At the time vf publication, the editions indicated were valid. All standards are subject to 3.3 Thematerialshallalsoconformtotherequirements revision and parties to agreements based on this giveninTable 1. standard are encouraged to investigate the possibility of applying the most recent editions of the standards 3.4 Thematerialshallbeprocessed, packed, stored and indicatedbelow: distributed under hygienic conditions in Iicenced premises(seeIS2491). Is No. Title 4PACKING, STORAGE AND MARKING 1070:1992 Reagent grade water (third revision) 1699:1995 Methods of sampling and test for food 4.1 Packing colours (second revision) The material shall be securely packed in well-filled z49 I:1998 Food hygiene — General principles — containers withminimum access to air.The containers Code ofpractice (second revision) shall be such as to preclude contamination of the contents withmetals orother impurities. 3 REQUIREMENTS 4.2 Storage 3.1 Description Thematerialshallbestored inacoolanddryplacesoas Phosphoric acid shall be aclear, colorless, odourless to avoid excessive exposure to heat. viscousliquid.Itshallbemiscible inwaterandethanol. Table 1Requirements for Phosphoric Acid (Clause 3.3) S1No. Characteristic Requirement Methodof Test, Ref to f \ Annex of this Clause of Standard [S 1699 (1) (2) (3) (4) (5) i) Purity as H3POdp,ercentbymass,Mn 85 A — Ii) Nitrates, mg/kg, Max 5 B — iii) Volatileacids, mglkg, Max 10 c iv) Chlorides, mg/kg, Max 200 D v) Sulphates percent by mass, Max 0.15 E vi) Fluoride, mglkg, Max 10 F . vii) Arsenic (as As), mgkg, Max 2 15 viii) Lead(as Pb), mg/kg, Max 5 15 lx) Heavy metals, m~kg, Max 10 16 KS10508:2007 4..3 Nlarking 4.3.1 MS Certification Marking [’achcontainer shall be legibly and indelibly marked The material may also be marked with the Standard uith the following information: Mark. d) Nameofthematerialincludingthewords‘Food 4.3.1.1 Theuseofthe Standard Mark isgoverned by Grade’; the provisions oftheBureau ofIndian Standards Act, h) Name and address ofthe manufacturer; 1986andthe Rulesand Regulations made thereunder. The details of conditions under which the licence for c“) Dateofmanufacture; the use of the Standard Mark may be granted to dj BatchorCodenumber; manufacturers orproducers maybe obtained fromthe Bureau ofIndian Standards. e) Net content when packed; f) Phosphoric acid content; 5 SA.MPLING g) instruction for storage; Representative samples ofthe material shall be drawn h) Bestbefore date (Month andYeartobegiven accordingtothemethod prescribed in4ofIS 1699. bythe manufacturer); and 6QUALITY OF REAGENTS ;) Any other requirements as given under the Unlessspecif~edotherwise,purechemicalsanddistilled .$[ ti)7durds ?f Weights and Measures watw(s.~eiS 1070)shallbeemployed intests. (f’oi’ktgcd Coniwdities) Rules, 1977 and Prwmtion ofFooa’Adulk’ra[ion Act, 1955and NOTE -- ‘Pure chemicals’ shall mean chemicals that do Rules. not contain impurities which affect the experimental results. ANNEX A [Table 1, S1No. (i)] DETERMINATION OF PURITY A-I REAGENTS A-2PROCEDURE A-1.1 ‘Mymolphthatein Solution —Dissolve 0.100 g’ Weigh1.000gofphosphoricacidintoaglass-stoppered ut’I!IYmolphtllalein in 100ml of ethanol and filter, if flask,dilute withabout 100mlofwater, add 0.5 ml of nticessfiry. thymolphthalein solution. Titrate with IN sodium hydroxide. Each mililitre of 1??sodium hydroxide is A-1.2Sodium Hydroxide —O.l N. equivalentto0.049gofHJPOq. ANNEX B [Table 1,S1No. (ii)] DETERMINATION OF NITRATE B-1PROCEDURE 5 mg of sodium chloride, 0.1 ml of indigo carmine solution, and add 10 ml of sulphuric acid. The blue Dililt3c48 gotthe sample in 10rnlwithwaterandadd colour shallnotdisappear entirely within5min. ANNEX C [Table 1,SINO. (iii)] DETERMINATION OF VOLTILE ACIDS C-I PROCEDURE anddistill 50ml.Tothe distillate add phenolphthalein andtitratewith0.1Nsodiumhydroxide. Notmorethan Dilute60.05 gofthesamplewith75mloffreshlyboiled 0.1mlof0.1Nsodiumhydroxide shallberequired for :lt)dcooled water inadistilling flaskwith aspray tap, neutralization. 2 IS 10508:2007 ANNEX D [Table 1, SINO. (iv)] TEST FOR CHLORIDES D-t PROCEDURE ofdilutenitricacidTS,anddiluteto50mlwithwater, Place 1.78gofthesample inaNessler tube, dissolve it Ifthe solution containing the sample isnot clear, filter inabout30mlofwater,andneutralize withdilutenitric both solutions under the same conditions. Add 1mlof acid TS. ifthe solution isalkaline. Add 6ml of dilute silver nitrate TS to each solution, mixthoroughly, and nitricacidTSanddiluteto50mlwithwater.Iftheuseof allowtostandfor5minprotected fromdirect sunlight. a sample solution is prescribed, transfer the sample Comparetheturbidityofthetwosolutionsbyobserving solution into a Nessler tube and dilute to 50 ml with theNesslcxtubes from the sides andthe tops against a water. Transfer 1ml of 0.01 N hydrochloric acid into blackbackground. Theturbidity ofthe sample solution another Nessler tube toserveasthe standard, add6ml shallnot exceed that ofthe standard. ANNEX E [Table 1,S1No. (v)] TEST FOR SULPHATES E-1 PROCEDURE acidTS,anddiluteto50mlwithwater. Place 1.25gofthe sample inaNessler tube,dissolve it Ifthe solution containing the sample isnot clear, filter in about 30 ml of water, and neutralize with dilute both solutions under the sameconditions. Add 2ml of hydrochloric acid TS, if the solution is alkaline. Add barium chloride TS to each solution, mix thoroughly, 1mlofdilute hydrochloric acid TSanddiluteto 50ml andallowtostandfor 10min.Compare theturbidity of withwater.Iftheuseofasamplesolution isprescribed, the two solutions byobserving the Nessler tubes horn transfer the sample solution into a Nessler tube and the sidesandthe topsagainst ablack background. The diluteto50mlwithwater.Transfertheprescribedvolume turbidity of the sample does not exceed that of the of 0.01 N sulphuric acid into another Nessler tube to standard. serve as the standard, add 1ml of dilute hydrochloric ANNEX F [Table 1,SINO. (vi)] DETERMINATION OF FLUORIDE F-1 APPARATUS F-2 REAGENTS Assembly asshown inFig. 1. F-2.1 Phenolphthalein Solution —,Dissolve 0.2gof phenolphthalein in 60 ml of 90 percent ethanol and sufilcientwatertomake 100ml. F-2.2 Sodium Hydroxide— lN. F-2.3 Sulphuric Acid — Concentrated. F-2.4 Sodium Fluoride Solution —Containing 50pgof fluoride. F-2.5 Hydrochloric Acid —4 N. F~2.6Zirconium Aliiarin Solution Dissolve0.80gofzirconium nitrate inwater,addafew dropsof4N nitricacidandmakeupto 100mlwithwater. Dissolve 0.10gofalizarin sulphonate monohydrate in FIG.1APPARATUSFORLIMITTESTFORFLUORIDE 3 1S 10508:2007 20mlofwater,makeup to 100mlwithethanol.Mix1ml the water. Connect flask B to the apparatus. Place the of tirst solution with 1ml of second solution and add tipofthecondenserintoaflaskcontaining 5mlofwater. 18ml of water. The solution should be clear and the Mixthe contents of flask B, heat to 150°Cand slowly diIutionshould be ti-eshlyprepared. shutthescrewclamp atC.Regulate thetemperature of the solution in the flask B to 150-153°Cduring the F-3 PROCEDURE distillation. Continue until70mlofdistillate have been F-3. 1 Placeabout500mlofwaterinflaskA(seeFig. 1), collected. make it alkaline to phenolphthalein solution with 1N F-3.3 Place thedistillate ina100mlNessler tube. Place sodium hydroxide andheat thewater toboiling. Leave 80 ml of sodium fluoride solution, containing 50 ~g of open the screw clamp atC. fluorine, in a second Nessler tube. To each tube add F-3.2 Determine the appropriate weight ofthesample 8.5mlof4Nhydrochloric acidand2.0mlofzirconium- (W,ingram) bytheformula W=50/L,inwhichListhe alizarin solution andmakeup to 100mlwithwater.Let fluoride limit,inmgkg. Accuratelyweighthecalculated thetubes stand for 15min. amount ofthe sample,place itinflaskB,andadd 10ml F-3.4 The colour of the test solution containing the ofwatertotheflask.Add 17mlofsulphuricacidslowly sample shall not be darker than that of the standard downthesidesoftheflasksothat itformsalayerunder solution. . 4 Bureau of Indian Standards BIS is a statutory institution established under the Bureau of Indian Standardr Act, 1986 to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country. Copyright BIS has the copyright of all its publications. No part of these publications may be reproduced in any form without the prior permission inwriting ofBIS.Thisdoesnotpreclude the freeuse, inthe course of implementing the standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to copyright be addressed to the Director (Publications), BIS. Review of Indian Standards Amendments are issued to standards asthe need arises on the basis of comments. Standards are also reviewed periodically; a standard along with amendments isreaffirmed when such review indicates that no changes are needed; if the review indicates that changes are needed, it istaken up for revision. Users of Indian Standards should ascertain that they are inpossession ofthe latestamendments oredition byreferring tothe latest issue of ‘BIS Catalogue’ and ‘Standards: Monthly Additions’. ‘ThisIndian Standard has been developed from Doc: No. FAD8(1586). Amendments Issued Since Publication Amend No. Date of Issue Text Affected BUREAU OF INDIAN STANDARDS Headquarters: Manak Bhavan, 9 Bahadur Shah Zafa r Marg, New Delhi 110002 Telephones: 23230131,23233375,2323 9402 website: www.bis.org.irt Regional Offices: Telephones Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg 23237617 NEW DELHI 110002 { 23233841 Eastern : 1/14C.LT. Scheme VII M, V.I.P. Road, Kankurgachi 23378499,23378561 KOLKATA 700054 { 23378626,23379120 Northern : SCO 335-336, Sector 34-A, CHANDIGARH 160022 2603843 { 2609285 Southern : C.I.T. Campus, IV Cross Road, CHENNAI 600113 22541216,22541442 { 22542519,22542315 Western : Manakalaya, E9 MIDC, Marol, Andheri (Fast) 28329295,28327858 MUMBAI 400093 {28327891,28327892 Branches : AHMEDABAD. BANGALORE. BHOPAL.BHUBANESHWAR. COIMBATORE. FARIDABAD. GHAZIABAD. GUWAHATL HYDERABAD. JAIPUR. KANPUR. LUCKNOW. NAGPUR. PARWANOO. PATNA. PUNE. RAJKOT. THIRUVANANTHAPURAM. VISAKHAPATNAM. PrintedatSJmcoPrintingPress,Delhl