Attachment 0003 - MIL-S-20322B.pdf

MIL-S-20322B

19 April 1973 SUPEiWDING

MIL-S-20322A

’17April 1956

MILITARY SPECIFICATION

STRONTIUM NITRATE, ANHYDROUS .

This specification has been approved by the Depar-t of Defense and is mandatmy for use by the Departmts of the Army, the Navy, and the Air Zorce.

1. SCOPE -

1.1 Scope. This specification covers anhydrous strontiu nitrate for use in pyrotechnic compositions.

1.2 Classification. Strontium nitrate, anhydrous shall be of the following grades, as specified (see 6.1 and 6.2):

t

Grade A .

Grade B

/’ - 2. APP’LICABMDfxmmJTs .

2.1 The foSlowiqs..documentsof the issue in effecton.date & iK&L-tation for bids’or’zequest for proposal, form a part of.~his specifica-tion to the extent specified herein:

SPECIFICATIONS

FEDEWiL L--P-378 -

RR-S-366 -

PPP-D-723 -

MILITARY

Plastic Sheet and Strip, Thin Gauge, Polyolefin Sieve, Test Drums, Fiber

MILD-3464 - Desiccants, Activated, Bagged, Packaging Use and Static Dehumidification.

MXL-D-6054 - Drum, Metal - Shipping and Storage.

FSC 6810

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STANDARDS

MILITARY

MIL-STD-105- Sampling Procedures and Tables for Inspection by

Attributes MIL-STD-129 - Marking for Shipment and Storage.

(Copies of specifications, standards, drawings, and publications re-quired by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contractifig officer.)

2.2 Other publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for pro-posal shall apply.

DEPARTMENT OF TRANSPORTATION

49 cm 171-179 - Department of Transportation Rules and Regulations for the Transportation of Explosives and-Other Dangerous Articles.

‘(The code of Federal Regulations (CFR) and the Federal Register (FR) are for sale on a subscription basis by the Superintendent of Documents, U. S. Government Rinting Office, Washington, D. C. 20402. When indicated, reprints of certain Federal agency responsible for

AMERICAN SOCIETY FOR TESTING

D 1193 - Reagent Water .

regulations may be obtained from the issuance thereof.)

AND MATERIAL (ASTM)

(Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103.)

Technical society and technical association specifications and standards are generally available for reference from libraries. They are also distributed among technical groups and using Federal agencies.

3. REQUIREMI!NTS

3*1 ~al”~ The strontim nitrate shall conform to the chemical end physical requirements specified tn table 1.

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MIL-S-20322B

TABLE 1. Chemical and physical Properties

Property

Strontium nitrate (includtn8 any barium nitrate), %, min.

Moi~ture, %, max.

Hygroscopicity, %, max.

Acidity (pH)

Water-insoluble matter, %, max.

Grit, %, QiUt.

Chloride (as Cl)$ Xs max.

Amnonium compounds (aa NH3), %, max.

Sulfur (total),%~ max.

Barium, %, -.

Calcium, %, max.

LUagnesium,Z, max.

Sodiumz %, max.

Iron, %, max.

Bismuth, %, max.

copper, %, max.

Requirement

Grade A

99.5

0.05

0.05

6.0-7.0

0.02

0.02

0.00;

O.oi

O.oi

0.05

0 ● 003

0 ● 003

0.003

0 ● 003

0 ● 003

0 ● 003

0.003 rGradeB99.5

0.05

0.05

6.0-7.0

0.02

0.02

,(Jc&”

(Ml. :

oeo~”

1.5

0.003

0 ● 003

0.003

0.003

0.003

0 ● 003

0 ● 003

Test paragraph

4.4.1

4.4.2

4.4.3

4.4*4

4.4.5

4.4.6

~4.4.7

4-.4.8~~

4.4.9

4.4.10

4.4.10

4.4.10

4.4.10

4.4.10

4.4.10

4.4.10

4.4.10

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MIL-S-20322B )

3.2 Granulation

3.2.1 Grade A. The granulation requirement for Grade A strontium nitrate shall be 95 percent through a number (No.) 100 U. S. standard sieve, min., when tested in accordance with 4.4.11. The sie”~eused shall conform to RR-S-366.

3.2.2 Grade B. The granulation requirements for Grade B strontium nitrate shall be 99.9 percent through a No. 50 U. S. standard sieve, min., and 70.0 percent retained on a No. 140 sieve, min. The sieves used shall conform to RR-S-366.

3.3 Workmanship. The material sh.~:1be free from grit, dirt, foreign matter and other injurious materials.

4. QUALITY ASSURANCE PROVISIONS

4.1 Reaponsibility for inspection. Unless otherwise specified in the contract or purchase order$ the supplier is responsible for the performance of all inspection requirements as specified hereim. Ex-cept as otherwise specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Governmnt reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. The test procedures specified hereinafter shall be used in determining compliance of the material with the corresponding require-ments specified in section 3. Failure of a specimen to comply with any requirement of the acceptance test shall result in the rejection of the lot represented.

4.2 Lotting. A lot shall consist of strontium nitrate produced consecutively on one shift, by one manufacturer, at :l:e:ua p~at, using the same equipment, under essentially the same manufacturing conditions, with no change in raw materials, provided the operation is continuous. In the event the process is a batch operation, each batch shall constitute a lot (see 6.3).

4.3 Sampling. Containers shall be randomly selected from each lot in accordance with MIL-STD-105, inspection level S-4, with a minimum sample size of five containers per lot. The contents of each con-tainer shall be thoroughly mixed and approximately 8 ounces of the material removed from each of the selected containers. F~ch primary sample shall be placed in an air-tight container, labeled so that the container from which it was ta!cencan be easily identified. A com-posite sample of approximately 16 ounces shall be made from equal

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MIL-S-20322B

! 3 ..4, .t -

L portions of the primary samples and mixed thoroughly. The composite sample shall be placed in ah air-tight container labeled to show the name of the material, manufacturer> plantg contract or purchase order, batch number, and lot number. All acceptance tests shall be made on specimens selected from the composite sample representative of the lot.

However, if it becomesapparentduringeanplingthat the lot is not -uniform throughout, the inspector may r~ui?e that any of the prisaary samples be tested for compliance with thefreq@nanents 0$ thie spec&-fication. The pri~~ samples shall beheld for futura eq@nation should the composi~a sample fail to meet ~_@p@eficatiw. requirem~ts% ,

4.4 Tests. Distilled water in accordance with &IliD 1193 Type 111, and reagent grade chemicalq shall h U* thro@houg the tests. .BIMk determinations shall be run and corrections shall be applied when necessary.

4.4.1 Strontiumnitrate. Place 10.0 tO.5 gm. of tungstic oxide into a platinum crucible and ignite at 700° t500C (1292° *9@P) in a furnace for 1 hour. Cobl in a desiccator for 60 f5mixiu?e# and-~@. Place the crucible back into the furnace for en additional half hour, cool in a desiccator for 60 *5 minutes, and weigh again. Rapeat the pro-cedure until conetant weight is obtained. ~llow the furnace to cool to approximately room temperature and adjuet the controls to 690°C.

(1274°F). Mix a 2 p. portion of the ~ample (accurtielyweighed to

0.1 reg.)with the ignited tungstic oicideand cover the crucible with a tight fitting cover. Place the cmc~ble in the fU~Ce at ~pp~bitely room temperature and heat to 690°C (1274V). Heat the crucible for 2 hours after the operating temperature has been reached, cool in a desiccator for 60 t5 minutes; and weigh. Reheat for an additional half hour, cool in a desiccator for 60 *S minutes, and weigh again. Repeat the pqocedure until constant weight is obtained. Calculate the percent strontium nitrate as follows:

195.9APercent strontium nitrate = ~ where, A = 10ss in Wdght, gm.

w= weight of sample, gm.

4.4.2 Moisture. Transfer 3 gm. of the sample to a tared weighing—-—.

dish (approxi~tely 6 cm. in dfameter and 2.5 cm. deep) and weigh. Dry at 130° t3°C (265~ ~5°!?)for 3 hours, cool in a desiccator, and weigh.

Calculate the percent moisture as follows:

100 APercent moisture = --yj---

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)/MIL-S-20322B

where, A = w= loss in weight, gm.

weight of sample, gm.

Save the dried samples for the hygroscopicity determination (see 4.4.3).

4.4.3 HygroacopLc~tY. “Place the dried s~ples from the moisture determination into a desiccator, 10 liter capacity, containing 1 liter of a sulfuric acid solution (33.1tO.2% sulfuricacid by weight)for producing 70% relative humidity at 25°C (77-). Allow the diehes to remain in the desiccator for 48 hours and weigh. place the diehes baak into the desiccator for 24 hours and weigh again. Rep=t far 24 hour intervals until constant weight f~ obtained. Usually the weight will not change significantly after the initial 48 hour period. Calculate the percent hygroscopicity as folluwe:

100 A Percant hygroscopicity = ~ where, A = gain in weight, gm.

W = wei@t of sample, PO n

4.4.4 Acidity (pH). Dissolve 5 gm. of the sample in 100 ml. of distilled water. Determine the pH of the eolutionat 25°C (77°F).

4.4.5 Water-insoluble matter. Weigh 50 gm. of the sample into a @O ml. beaker, add about 300 ml. of water,and stir to dissolve. Heat to boiling and boil for 5 minutes with occasional stirring. Filter through a tared aintered glass crucible and wash with hot water. Dry the crucible at 105° t3°C (221° t5°F) for 1 hour, cool in a desiccator, and weigh. Calculate the percent water-inao~uble matter 88 follows:

100 A Percent water-insoluble matter = ~ where, A = weight of residue, gm.

W = weight Of sample, gm.

4.4.6 Grit. Weigh 50 gm. of the sample into a 400 ml. beaker, ~Jd about 300 ml. of water, and stir to dissolve. Heat to boiling and boil for 5 minutes with occasional stirring. Filter through a matman No. @ filter paper and transfer and wash with hot water. Ssve the filtrate for the determination of chloride (see 4.4.7). Nash the residue frm the filter paper into a 100 ml beaker with a stream of water from a wash bottle. Add 10 MI. of nitric acid to the 100 ml be&er and evaporate to dryness on a stem bath. Add about 10 ml. of watt~r and break up

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* MIL-S-20322B

) my residue with a plica. Transfer to a No. 170 U. S. standard sieve with water. If any solid material is retained by the-sieve, wash well with water, alcohol, and $inally ethyl ether. Tramafer the ~terial to a tared weighing dish a@ weigh. Calculate the percant grit as follows:

100 A Percent grit = ~ where, A = weightof residue,gm.

W = weight of sample, gm.

4.4.7 Chloride. Add 5 ml. of nitric acid to the filtrate fraa ~he grit determination (see 4.4.6). Heat to boiling, add 5 m!. of 5% silver nitrate solution, and boil for 5 minutes. Allow to stand in a dark place overnight at room temperatures Filter through a tared sintered glass crucible of fine porosity and wash with water. Dry at 150° *5°C (302° 29~) for 1 hour, cool in a desiccator, and weigh. Calculate the percent chloride as follows:

24.7A .

Percentchloride (as Cl) =~ . -

. where, A = weight of percipitate, ~.

W = weight of sample, gm=

4.4.8 Ammoniumcommmd~. Weigh 10 gm. of the sampleinto a 500 ml.

Kjeldahlflaskand dissolvein 100ml. of water. Md 10 ml. of 2~ sodiumhydroxidesolution>immediatelyconnectto the Kjeldahldis-tillfi:;ionapparatus-,the outlet tube of.which dips bel~ 50 ml. of 3% borjc acid solution contained in a W+ til.Erlenrneyerflask. Distill q%o;.lt75 ml., wash down the outlet tube, add about 3 drops of methyl .,.. ,.P~eindicator, @ titrate with st~dard 0.05 N sulfuric acid solution ~::~;7 the color changes from green to light purple. tirry a blank deter- ,{a;lt:ionthrough the entire procedure. Calculate the percent ammonium co4rqmunds SS follcMs:

Percent ammonium compounds (as F?H3)=

1.70 (A-B) ii

W

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4.4.9 Sulfur (total). Weigh 20 gm. of the sample into a 400 ml’ beaker, add about 200 ml. of water, and stir to dissolve. Add 2 ml. , of hydrochloric acid and 10 ml. of bromine water. Heat to boiling and boil 10 minutes. Filter through a Whatman No. 40 filter paper and wash with water. Add 10 ml. of 10% barium chloride solution, heat to boiling, and boil s minutes. Allow to stand overnight. Filter through a Whatman No. 42 filter paper, transfer, and wash with water. Place the filter paper and precipitate into a tared platinum crucible. Char and burn off i the filter paper at minutes. Cool in a as follows:

where, A = weight W = weight dull red heat and then ignite at red heat for 30 I desiccator and weigh. Calculate the percent sulfur

13.7 A

percent sulfur (total) = ~ of precipitate, @o of sample, gm.

4.4.10 Barium, calcium, m&nesSum, sodium, iron, bismuth, Ieadx and copper. Determine the calcium, bari~, magnesium, sodiuni,iron, bismuth, lead and copper contents by spectrographic or other instrumental methods approved by the contracting officer..

4.4.11 Granulation.

t

Dry the material to be sieved by spreading in a . :* thin layer on a large watch glass and heating ifian oven at 57° t3°C (13so tsoF) for 1 hour.

Approximately 100 gm. of dried Grade Amaterial shall be transferred to a No. 100 U. S. titandardsieve. Approximately 100 gm. of dried Grade B material shall be transferred to a No. 50 U. S.

standard sieve nested over a No. 140 sieve. The sieva cr iiieve assembly shall be provided with a cover and a bottom pan. The sieves shall.conform to RR-S-366. Shake for 10 minutes by hand,. or for 5 ain~tes by means of a mechanical ohaker geared to prcduce 300 t15 gyra~ii:cs and 150 210 taps of the striker per minute. Weigh the retained po:ticns on each sieve and calcu~~~te to p<rcent passed or reteined, QS ;~~~illi”~r~d.

5• PRKPARATIoN FOR D7L1VERY

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J b

) head provided with a twist lock closure or bolted ring closure. ‘The lid shall have a tubular rubber gasket. The drums shall be provided with a bag liner fabricated.from nominal 6 ml. thick polyethylene.

Polyethylene bags shall be made from pIastic film conforming to L-P-378, type I, finish 1. All bag se~s and closure shall be heat sealed.

Three units of desiccant conforming to MIL-D-~464 shall then be put on top of the sealed polyethylene bag (to absorb any moisture which may be entrapped). A printed card identified with marking in accordance with MIL-STD-129 shail be inserted just before the drum is closed.

5.1.2 Level B. Strontium nitrate shell be packed in fiber drums confoming to PPP-D-723, Type I, grade A, c2ass 2; Type II, grade A;

and iype 111, grade A, class 2, ~ applicable. Polyethylene bag as specified in s.1.1 shall be provided. Fiber drums shall be with full open head provided with a l“ockingring closure. NeE weight of the material of each drum shall be 150 pounds.

5.1.3 Level C. Unless-otherwise specified (see 6.2), 150 pounds of strontium nitrate shall be packed in a container constructed to assure tha$ the strontium nitrate will remain in prime condition and adequate to assure safe delivery to destination without-damage. The container shall comply with Uniform Freight Classification, National .

Motor Freight Classification, and Department of Transportation Regulations, as applicable. The container shall be sufficiently rigid to withstand transportation and to permit storing in tiers at least 10 feet high without damage to containers or contents. The gross weight and size limitations of the.containers shall not exceed the tariff or classification limita~ions specified therein, and the containers shall be closed or strapped as specified therein.

-3.2 Marking. The metal drums shall be marked in accordance with ~?’partmentof Transportation Regulations, and with MIL-STD-129.

;..,2.1 l?,ack~prepared for level C shall be conspicuously marked MIN

‘f-f.LE<. \fhen specified, containers for overseas shipment” shall be uarked with the Ordnance Corps symbol, the SNL group of the item and the method of prasprvation.

6. NOTES

6.1 Intended >. Strontium nitrate Grade A and Grade B are for use-.—— - -as fo:lows:

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Grade A - For use in pyrotechnic compositions, such as flares..

Grade B - For use in tracer composition~.

6,2 Orderingdata. Procurement documents should specify the following:

a. Title, number, and date of this specification.

b. Grade required (see 1.2).

C. Level of packing required (see 5.1).

6.3 Batch. A batch is defined m that quantity of material which has been manufactured by some unit chaical procese ox has bean subjected to some physical mixing operation intended to make the final product sub-stantially uniform.

Custodians: Praparing activity:

Army - MU Army-MU

Navy - AS Project NO. 6810-0955

Reviewactivittee: .

Amy - m, ~

User activities:

Amy - WC Navy - AS DSA - (x

*U.S. GOVERNMENT PRINTING OFFICE: 1974-713155/_

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‘>mittin~commentsandsuggestionsforhnprovememts.Allusem of military dandati~xation hcummta me imibwi to w-0vL%3

.ggmtiom ‘Xl& form may be detached,foldedalongthelinesindic-ted, taped along tie 100= edge (DO NOT STAPLE), and rnaikd. h block 5, be M spec~lc as posaibk about pai+icuhr problem areas UUChas wording whichrequiredinterpretation,w-toorigid,restrictive,loose,ambiguous,orwasincompatible,andgiveproposedwo~~ b- whichwo~~ alleviate the problems. Enterinblock 6 any remarks not dated to s specifii paragraph of the docume at. If block 7 is filied out, an acknowledgement will be mailed to you within 30 daya to let you know that your comments were received and are being considered.

NOTE: This form may not be used to request copies of documents,nortorequest wah~ deviations, or clti~cationof specificationrequirementoncurrentcontract8. Comments submittedon this formcionotconstitute or imply authorization to waive any portion of the referenced document(s) or to amendcontractualrequiremen~

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L I { ~N,~~pJj-OF THE ARMY

111111Fl”

UNITED STATES

,; FF’KIAL atJsiNE~

- l“iii%iiiSSFEPLY MAIL ‘.<NA~.Tf f-oR PRIVATE USE $3f30

] f=lt?sT CLASS PERMIT NO. 12062 WASH15JGTON O C. I t #

POSTAGE WILL BE PAID BY THE DEPARTMENT OF THE ARMY

Commanding Officer Frankford Arsenal

ATTN : SMUFA-J4000

Philadelphia, PA 19137 nl L &-u W-y., -----r -------

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STANDARDIZATION DOCUMENT IMPROVEMENT PROPOSAL

(SeeInstructions - Reverse Side)

. DOCUMENT NUMBER 2. DOCUMENT TITLE

a. NAME OF SUBMITTING ORGANIZATION

. ADORESS (Street, City, State, ZXP Code)

). PROBLEM AREAS

a Paragraph Number and Wording:

b.

c.

Racornrnondod Wo-dhg:

Reason/Rational.

i. REMARKS for Recommendmion:

L TYPE OF ORGANIZATION (Mark one)

•1 VENDOR

m USE R

❑ MANUFACTURER

•1 OTHk R (Specfti):

i$— -—-——. .- —-— —.—— ..-.— . -.—..—-.—— . .———————--—-.——— ---—-—.

+/c.NAME OF SUBMITTER (Last, First .Vl) -- Opr Ionrd

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