Óòâåðæäåí è ââåäåí â äåéñòâèå

Ïîñòàíîâëåíèåì Ãîññòàíäàðòà ÑÑÑÐ

îò 3 àïðåëÿ 1991 ã. N 435

 

ÃÎÑÓÄÀÐÑÒÂÅÍÍÛÉ ÑÒÀÍÄÀÐÒ ÑÎÞÇÀ ÑÑÐ

 

ÊÈÑËÎÒÀ ÀÇÎÒÍÀß ÒÅÕÍÈ×ÅÑÊÀß

 

ÌÅÒÎÄ ÎÏÐÅÄÅËÅÍÈß ÊÎÍÖÅÍÒÐÀÖÈÈ ÏÎ ÈÇÌÅÐÅÍÈÞ ÏËÎÒÍÎÑÒÈ

 

Nitric acid for industrial use. Evaluation of the nitric

acid concentration by measurement of density

 

ÃÎÑÒ 28959-91

(ÈÑÎ 2990-74)

 

Ãðóïïà Ë19

 

ÎÊÑÒÓ 2109

 

Äàòà ââåäåíèÿ

1 èþëÿ 1992 ãîäà

 

ÈÍÔÎÐÌÀÖÈÎÍÍÛÅ ÄÀÍÍÛÅ

 

1. Íàñòîÿùèé ñòàíäàðò ïîäãîòîâëåí Àññîöèàöèåé "Àãðîõèì" ìåòîäîì ïðÿìîãî ïðèìåíåíèÿ ìåæäóíàðîäíîãî ñòàíäàðòà ÈÑÎ 2990-74 "Êèñëîòà àçîòíàÿ òåõíè÷åñêàÿ. Îïðåäåëåíèå êîíöåíòðàöèè ïî èçìåðåíèþ ïëîòíîñòè" è ïîëíîñòüþ åìó ñîîòâåòñòâóåò.

2. Óòâåðæäåí è ââåäåí â äåéñòâèå Ïîñòàíîâëåíèåì Ãîñóäàðñòâåííîãî êîìèòåòà ÑÑÑÐ ïî óïðàâëåíèþ êà÷åñòâîì ïðîäóêöèè è ñòàíäàðòàì îò 03.04.1991 N 435.

3. Ññûëî÷íûå íîðìàòèâíî-òåõíè÷åñêèå äîêóìåíòû

 

───────────────────────────────────────┬──────────────────────────

Îáîçíà÷åíèå ÍÒÄ, íà êîòîðûé äàíà ññûëêà│ Íîìåð ïóíêòà, ïîäïóíêòà

───────────────────────────────────────┼──────────────────────────

ÃÎÑÒ 701-89                            │1; 2

ÃÎÑÒ 18481-81                          │3.1; 3.2

ÃÎÑÒ 27544-87                          │3.3

 

Íàñòîÿùèé ñòàíäàðò óñòàíàâëèâàåò ìåòîä ïðèáëèçèòåëüíîãî îïðåäåëåíèÿ êîíöåíòðàöèè òåõíè÷åñêîé àçîòíîé êèñëîòû ïî èçìåðåíèþ ïëîòíîñòè ïðè òåìïåðàòóðå 20 °C ñ ïîìîùüþ àðåîìåòðà.

 

1. ÎÒÁÎÐ ÏÐÎÁ

 

Îòáîð è ïîäãîòîâêà ïðîá - ïî ÃÎÑÒ 701-89.

 

2. ÒÐÅÁÎÂÀÍÈß ÁÅÇÎÏÀÑÍÎÑÒÈ

 

Òðåáîâàíèÿ áåçîïàñíîñòè - ïî ÃÎÑÒ 701-89.

 

3. ÀÏÏÀÐÀÒÓÐÀ

 

3.1. Àðåîìåòð ÀÎÍ-2 1400 - 1480; 1480 - 1570 - ïî ÃÎÑÒ 18481.

3.2. Öèëèíäð - 1 (3) 50/335 - ïî ÃÎÑÒ 18481.

3.3. Òåðìîìåòð ïî ÃÎÑÒ 27544 ñ íåñìà÷èâàþùåé æèäêîñòüþ òèïà Á, äèàïàçîíîì èçìåðåíèÿ 0 - 100 °C, öåíîé äåëåíèÿ 0,5 °C.

 

4. ÏÐÎÂÅÄÅÍÈÅ ÈÑÏÛÒÀÍÈß

 

4.1. Îïðåäåëåíèå ïëîòíîñòè

500 ñì3 èñïûòóåìîãî îáðàçöà ïîìåùàþò â ñòåêëÿííûé öèëèíäð è äîâîäÿò äî ìåòêè ïðè òåìïåðàòóðå (20 +/- 0,5) °C. Àðåîìåòð ïîìåùàþò â öèëèíäð è, êîãäà îí ïðèõîäèò â ñîñòîÿíèå ïîêîÿ, óáåæäàþòñÿ â òîì, ÷òî òåìïåðàòóðà êèñëîòû ñîñòàâëÿåò (20 +/- 0,5) °C. Ïî øêàëå àðåîìåòðà îòñ÷èòûâàþò ïîêàçàíèÿ ïëîòíîñòè.

4.2. Îïðåäåëåíèå êîíöåíòðàöèè àçîòíîé êèñëîòû

Ïî òàáëèöå îïðåäåëÿþò êîíöåíòðàöèþ àçîòíîé êèñëîòû, ñîîòâåòñòâóþùóþ âåëè÷èíå ïëîòíîñòè, ïîëó÷åííîé ñ ïîìîùüþ àðåîìåòðà.

 

Ïëîòíîñòü è êîíöåíòðàöèè âîäíûõ ðàñòâîðîâ àçîòíîé êèñëîòû

 

───────────────────────────────────┬──────────────────────────────

 Ïëîòíîñòü ïðè òåìïåðàòóðå 20 °C,  │Àçîòíàÿ êèñëîòà, % (ïî ìàññå)

               êã/ì3              

───────────────────────────────────┼──────────────────────────────

               1005                             1,25

               1010                             2,20

               1015                             3,10

               1020                             4,00

               1025                             4,90

               1030                             5,80

               1035                             6,65

               1040                             7,55

               1045                             8,40

               1050                             9,25

               1055                            10,10

               1060                            10,95

               1065                            11,80

               1070                            12,65

               1075                            13,50

               1080                            14,30

               1085                            15,15

               1090                            15,95

               1095                            16,75

               1100                            17,60

               1105                            18,40

               1110                            19,20

               1115                            20,00

               1120                            20,80

               1125                            21,60

               1130                            22,40

               1135                            23,15

               1140                            23,95

               1145                            24,70

               1150                            25,50

               1155                            26,25

               1160                            27,00

               1165                            27,75

               1170                            28,50

               1175                            29,25

               1180                            30,00

               1185                            30,75

               1190                            31,50

               1195                            32,25

               1200                            33,00

               1205                            33,70

               1210                            34,40

               1215                            35,15

               1220                            35,90

               1225                            36,70

               1230                            37,45

               1235                            38,25

               1240                            39,00

               1245                            39,80

               1250                            40,60

               1255                            41,35

               1260                            42,15

               1265                            42,90

               1270                            43,70

               1275                            44,50

               1280                            45,25

               1285                            46,05

               1290                            46,85

               1295                            47,60

               1300                            48,40

               1305                            49,15

               1310                            50,00

               1315                            50,85

               1320                            51,70

               1325                            52,50

               1330                            53,40

               1335                            54,25

               1340                            55,10

               1345                            56,00

               1350                            56,90

               1355                            57,80

               1360                            58,75

               1365                            59,70

               1370                            60,65

               1375                            61,60

               1380                            62,65

               1385                            63,65

               1390                            64,70

               1395                            65,80

               1400                            66,90

               1405                            68,05

               1410                            69,20

               1415                            70,40

               1420                            71,55

               1425                            72,80

               1430                            74,05

               1435                            75,35

               1440                            76,65

               1445                            78,00

               1450                            79,40

               1455                            80,85

               1460                            82,35

               1465                            83,85

               1470                            85,45

               1475                            87,20

               1480                            89,00

               1485                            91,00

               1490                            93,40

               1495                            95,90

               1500                            97,75

               1505                            98,85

               1510                            99,60

               1513                           100,00

 

 

 


 
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