Acids and Alkalis ( IMDG 35-10)

Most viewed topic under segregation on this site is Acids and Alkalis. Most of the Acids and Alkalis fall under Class 8 ; this makes it imperative that we must look in Column 16 of DGL to check the segregation requirements.

Acids and Alkalis are not allowed to be packed in the same outer packaging or stowed in the same container.

When both Acids and Alkalis belongs to class 8 they may be kept together under below clauses of IMDG Code

  1. Limited Quantities different Packaging  – No Segregation applicable
  2. Excepted Quantities different Packaging – No Segregation applicable
  3. Same outer packing or same container – As per 7.2.1.13.2 of IMDG Code
  4. Same outer packing in Limited Quantities -As per 3.4.4.1.2 of IMDG Code

Refer 5.4.1.5.2.2 & 5.4.1.5.11.3 of IMDG Code for dangerous goods declaration of Acid and Alkali consolidation.

For quick reference both Acids and Alkalis in 35th Amendment of IMDG Code is listed below

* indicates strong acids

ACIDS

ALKALIS

UN No.

Proper Shipping Name

UN No.

Proper Shipping Name

1052

Hydrogen fluoride, anhydrous*

1005

Ammonia, anhydrous

1182

Ethyl chloroformate

1160

Dimethylamine, aqueous solution

1183

Ethyldichlorosilane

1163

Dimethylhydrazine, unsymmetrical

1238

Methyl chloroformate

1235

Methylamine, aqueous solution

1242

Methyldichlorosilane

1244

Methylhydrazine

1250

Methyltrichlorosilane

1382

Potassium sulphide, anhydrous or potassium sulphide with less than 30% water of crystallization

1295

Trichlorosilane

1385

Sodium sulphide, anhydrous or sodium sulphide with less than 30% water of crystallization

1298

Trimethylchlorosilane

1604

Ethylenediamine

1305

Vinyltrichlorosilane

1719

Caustic alkali liquid, n.o.s

1572

Cacodylic acid

1813

Potassium hydroxide, solid

1595

Dimethyl sulphate

1814

Potassium hydroxide, solution

1715

Acetic anhydride

1819

Sodium aluminate solution

1716

Acetyl bromide

1823

Sodium hydroxide, solid

1717

Acetyl chloride

1824

Sodium hydroxide solution

1718

Butyl acid phosphate

1825

Sodium monoxide

1722

Allyl chloroformate

1835

Tetramethylammonium hydroxide solution

1723

Allyl iodide

1847

Potassium sulphide, hydrated with not less than 30% water of crystallization

1724

Allyltrichlorosilane, stabilized

1849

Sodium sulphide, hydrated with not less than 30% water

1725

Aluminium bromide, anhydrous

1907

Soda lime with more than 4% sodium hydroxide

1726

Aluminium chloride, anhydrous

1922

Pyrrolidine

1727

Ammonium hydrogendifluoride, solid

2029

Hydrazine, anhydrous

1728

Amyltrichlorosilane

2030

Hydrazine, aqueous solution with more than 37% hydrazine, by mass

1729

Anisoyl chloride

2033

Potassium monoxide

1730

Antimony pentachloride, liquid

2073

Ammonia solution relative density less than 0.880 at 15 °C in water, with more than 35% but not more than 50% ammonia

1731

Antimony pentachloride solution

2079

Diethylenetriamine

1732

Antimony pentafluoride

2259

Triethylenetetramine

1733

Antimony trichloride

2270

Ethylamine, aqueous solution, with not less than 50% but not more than 70% ethylamine

1736

Benzoyl chloride

2318

Sodium hydrosulphide with less than 25% water of crystallization

1737

Benzyl bromide

2320

Tetraethylenepentamine

1738

Benzyl chloride

2379

1,3-Diemthylbutylamine

1739

Benzyl chloroformate

2382

Dimethylhydrazine, symmetrical

1740

Hydrogendifluorides, n.o.s.

2386

1-Ethylpiperidine

1742

Boron trifluoride acetic acid complex, liquid

2399

1-Methylpiperidine

1743

Boron trifluoride propionic acid complex, liquid

2401

Piperidine

1744

Bromine or bromine solution

2491

Ethanolamine or ethanolamine solution

1745

Bromine pentafluoride

2579

Piperazine

1746

Bromide trifluoride

2671

Aminopyridines

1747

Butyltrichlorosilane

2672

Ammonia solution relative density between 0.880 and 0.957 at 15 °C in water, with more than 10% but not more than 35% ammonia, by mass

1750

Chloroacetic acid solution

2677

Rubidium hydroxide solution

1751

Chloroacetic acid, solid

2678

Rubidium hydroxide, solid

1752

Chloroacetyl chloride

2679

Lithium hydroxide solution

1753

Chlorophenyltrichlorosilane

2680

Lithium hydroxide

1754

Chlorosulphonic acid (with or without sulphur trioxide)

2681

Caesium hydroxide solution

1755

Chromic acid solution

2682

Caesium hydroxide

1756

Chromic fluoride, solid

2683

Ammonium sulphide solution

1757

Chromic fluoride solution

2733

Amines, flammable, corrosive, n.o.s. or polyamines, flammable, corrosive,n.o.s

1758

Chromium oxychloride

2734

Amines, liquid, corrosive, flammable, n.o.s. or polyamines, liquid, corrosive, flammable, n.o.s.

1762

Cyclohexenyltrichlorosilane

2735

Amines, liquid, corrosive, n.o.s. or polyamines, liquid, corrosive, n.o.s.

1763

Cyclohexyltrichlorosilane

2795

Batteries, wet, filled with alkali electric storage

1764

Dichloroacetic acid

2797

Battery fluid, alkali

1765

Dichloroacetyl chloride

2818

Ammonium polysulphide solution

1766

Dichlorophenyltrichlorosilane

2949

Sodium hydrosuonlphide, solid with not less than 25% water of crystallizati

1767

Diethyldichlorosilane

3028

Batteries, dry, containing potassium hydroxide, solid electric storage

1768

Difluorophosphoric acid, anhydrous

3073

Vinylpyridines, stabilized

1769

Diphenyldichlorosilane

3253

Disodium trioxosilicate

1770

Diphenyl methylbromide

3259

Amines, solid, corrosive, n.o.s. or polyamines, solid, corrosive, n.o.s.

1771

Dodecyltrichlorosilane

3262

Corrosive solid, basic, inorganic, n.o.s

1773

Ferric chloride, anhydrous

3263

Corrosive solid, basic, organic, n.o.s

1775

Fluoroboric acid

3266

Corrosive liquid, basic, inorganic, n.o.s

1776

Fluorophosphoric acid, anhydrous

3267

Corrosive liquid, basic, organic, n.o.s

1777

Fluorosulphonic acid*

3293

Hydrazine, aqueous solution with not more than 37% hydrazine, by mass

1778

Fluorosilicic acid

3318

Ammonia solution relative density less than 0.880 at 15 °C in water, with  more than 50% ammonia

1779

Formic acid with more than 85% acid by mass

3320

Sodium borohydride and sodium hydroxide solution with not more than 12% sodium borohydride and not more than 40% sodium hydroxide, by mass

1780

Fumaryl chloride

3423

Tetramethylammonium hydroxide, solid

1781

Hexadecyltrichlorosilane

3484

Hydrazine aqueous solution, flammable, with more than 37% hydrazine, by mass

1782

Hexafluorophosphoric acid

1784

Hexyltrichlorosilane

1786

Hydrofluoric acid and sulphuric acid mixture*

1787

Hydriodic acid*

1788

Hydrobromic acid*

1789

Hydrochloric acid*

1790

Hydrofluoric acid*

1792

Iodine monochloride

1793

Isopropyl acid phosphate

1794

Lead sulphate with more than 3% free acid

1796

Nitrating acid mixture*

1798

Nitrohydrochloric acid*

1799

Nonyltrichlorosilane

1800

Octadecyltrichlorosilane

1801

Octyltrichlorosilane

1802

Perchloric acid with not more than 50% acid, by mass*

1803

Phenolsulphonic acid, liquid

1804

Phenyltrichlorosilane

1805

Phosphoric acid, solution

1806

Phosphorus pentachloride

1807

Phosphorus pentoxide

1808

Phosphorus tribromide

1809

Phosphorus trichloride

1810

Phosphorus oxychloride

1811

Potassium hydrogendifluoride, solid

1815

Propionyl chloride

1816

Propyltrichlorosilane

1817

Pyrosulphuryl chloride

1818

Silicon tetrachloride

1826

Nitrating acid mixture, spent*

1827

Stannic chloride, anhydrous

1828

Sulphur chlorides

1829

Sulphur trioxide, inhibited or sulphur trioxide, stabilized

1830

Sulphuric acid with more than 51% acid*

1831

Sulphuric acid, fuming*

1832

Sulphuric acid, spent*

1833

Sulphurous acid

1834

Sulphuryl chloride

1836

Thionyl chloride

1837

Thiophosphoryl chloride

1838

Titanium tetrachloride

1839

Trichloroacetic acid

1840

Zinc chloride solution

1848

Propionic acid with not less than 10% and less than 90% by mass

1873

Perchloric acid with more than 50% but not more than 72% acid, by mass*

1898

Acetyl iodide

1902

Diisooctyl acid phosphate

1905

Selenic acid

1906

Sludge acid*

1938

Bromoacetic acid solution

1939

Phosphorus oxybromide

1940

Thioglycolic acid

2031

Nitric acid, other than red fuming*

2032

Nitric acid, red fuming*

2214

Phthalic anhydride with more than 0.05% of maleic anhydride

2215

Maleic anhydride

2218

Acrylic acid, inhibited

2225

Benzenesulphonyl chloride

2226

Benzotrichloride

2240

Chromosulphuric acid*

2262

Dimethylcarbamoyl chloride

2267

Dimethyl thiophosphoryl chloride

2305

Nitrobenzenesulphonic acid

2308

Nitrosylsulphuric acid, liquid*

2331

Zinc chloride, anhydrous

2353

Butyryl chloride

2395

Isobutyrylchloride

2407

Isopropyl chloroformate

2434

Dibenzyldichlorosilane

2435

Ethylphenyldichlorosilane

2437

Methylphenyldichlorosilane

2438

Trimethylacetyl chloride

2439

Sodium hydrogendifluoride

2440

Stannic chloride pentahydrate

2442

Trichloroacetyl chloride

2443

Vanadium oxytrichloride

2444

Vanadium tetrachloride

2475

Vanadium trichloride

2495

Iodine pentafluoride

2496

Propionic anhydride

2502

Valeryl chloride

2503

Zirconium tetrachloride

2506

Ammonium hydrogen sulphate

2507

Chloroplatinic acid, solid

2508

Molybdenum pentachloride

2509

Potassium hydrogen sulphate

2511

2-Chloropropionic acid

2513

Bromoacetyl bromide

2531

Methacrylic acid, stablilized

2564

Trichloroacetic acid solution

2571

Alkylsulphuric acids

2576

Phosphorus oxybromide, molten

2577

Phenylacetyl chloride

2578

Phosphorus trioxide

2580

Aluminium bromide solution

2581

Aluminium chloride solution

2582

Ferric chloride solution

2583

Alkylsulphonic acids, solid or arylsulphonic acids, solid with more than 5% free sulphuric acid

2584

Alkylsulphonic acids, liquid or arylsulphonic acids, liquid with more than 5% free sulphuric acid

2585

Alkylsulphonic acids, solid or arylsulphonic acids, solid with not more than 5% free sulphuric acid

2586

Alkylsulphonic acids, liquid or arylsulphonic acids, liquid with not more than 5% free sulphuric acid

2604

Boron trifluoride diethyl etherate

2626

Chloric acid, aqueous solution with not more than 10% chloric acid

2642

Fluoroacetic acid

2670

Cyanuric chloride

2691

Phosphorus pentabromide

2692

Boron tribromide

2698

Tetrahydrophthalic anhydrides with more than 0.05 % of maleic anhydride

2699

Trifluoroacetic acid

2739

Butyric anhydride

2740

n-Propyl chloroformate

2742

Chloroformates, toxic, corrosive, flammable, n.o.s.

2743

n-Butyl chloroformate

2744

Cyclobutyl chloroformate

2745

Chloromethyl chloroformate

2746

Phenyl chloroformate

2748

2-Ethylhexyl chloroformate

2751

Diethylthiophosphoryl chloride

2789

Acetic acid, glacial or acetic acid solution, more than 80% acid, by mass

2790

Acetic acid solution, more than 10% but not more than 80% acid, by mass

2794

Batteries, wet filled with acid electric storage

2796

Sulphuric acid with not more than 51% acid or battery fluid, acid*

2798

Phenylphosphorus dichloride

2799

Phenylphosphorus thiodichloride

2802

Copper chloride

2817

Ammonium hydrogendifluoride solution

2819

Amyl acid phosphate

2820

Butyric acid

2823

Crotonic acid, solid

2826

Ethyl chlorothioformate

2829

Caproic acid

2834

Phosphorous acid

2851

Boron trifluoride dehydrate

2865

Hydroxylamine sulphate

2869

Titanium trichloride mixture

2879

Selenium oxychloride

2967

Sulphamic acid

2985

Chlorosilanes, flammable, corrosive, n.o.s.

2986

Chlorosilanes, corrosive, flammable, n.o.s.

2987

Chlorosilanes, corrosive, n.o.s.

2988

Chlorosilanes, water-reactive, flammable, corrosive, n.o.s.

3246

Methanesulphonyl chloride

3250

Chloroacetic acid, molten

3260

Corrosive solid, acidic, inorganic, n.o.s.

3261

Corrosive solid, acidic, organic, n.o.s.

3264

Corrosive liquid, acidic, inorganic, n.o.s.

3265

Corrosive liquid, acidic, organic, n.o.s.

3277

Chloroformates, toxic, corrosive, n.o.s.

3361

Chlorosilanes, toxic, corrosive, n.o.s.

3362

Chlorosilanes, toxic, corrosive, flammable, n.o.s.

3412

Formic acid with not less than 10% but not more than 85% acid by mass

3412

Formic acid with not less than 5% but not more than 10% acid by mass

3419

Boron trifluoride acetic acid complex, solid

3420

Boron trifluoride propionic acid complex, solid

3421

Potassium hydrogendifluoride solution

3425

Bromoacetic acid, solid

3453

Phosphoric acid, solid

3456

Nitrosylsulphuric acid, solid

3463

Propionic acid with not less than 90% acid by mass

3472

Crotonic acid, liquid

4 comments

  1. hi,I was told by a DG Profi that UN2829 Caproic Acid (185kg net in 1A1) cannot be loaded in one sea container with ANY (or nearly any) of Class 3 or Class 9 goods. Can you confirm??? Maybe reference to IMO paragraph???

  2. there also some harmless and Class 3 and 9 goods, UN 3082, 1993 and 3272, all PG 3, without restrictions in Column 16. And exactly this is the question: is only Column 16 of the IMO DG list is applicable (then no problem – all 4 UN Nr can go together), OR only goods from segreg.group 1 are allowed to be loaded in one sea container?

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