Acidity regulators are substances which alter or control the acidity or alkalinity of a foodstuff.

Code Material CEFF approved
E 260 Acetic acid Yes Yes
E 261 Potassium acetate Yes Yes
E 262 Sodium acetate Yes Yes
E 263 Calcium acetate Yes Yes
E 270 Lactic acid Yes Yes
E 290 Carbon dioxide Yes Yes
E 296 Malic acid Yes Yes
E 297 Fumaric acid Yes Yes
E 325 Sodium lactate Yes Yes
E 326 Potassium lactate Yes Yes
E 327 Calcium lactate Yes Yes
E 330 Citric acid Yes Yes
E 331 Sodium citrates Yes Yes
E 332 Potassium citrates Yes Yes
E 333 Calcium citrates Yes Yes
E 334 Tartaric acid (L-(+)) Yes Yes
E 335 Sodium tartrates Yes Yes
E 336 Potassium tartrates Yes Yes
E 337 Sodium potassium tartrate Yes Yes
E 338 Phosphoric acid Yes Yes
E 339 Sodium phosphates Yes Yes
E 340 Potassium phosphates Yes Yes
E 341 Calcium phosphates Yes Yes
E 343 Magnesium phosphates Yes Yes
E 350 Sodium malates Yes Yes
E 351 Potassium malate Yes Yes
E 352 Calcium malates Yes Yes
E 353 Metatartaric acid Yes Yes
E 354 Calcium tartrate Yes Yes
E 355 Adipic acid Yes Yes
E 356 Sodium adipate Yes Yes
E 357 Potassium adipate Yes Yes
E 363 Succinic acid Yes Yes
E 380 Triammonium citrate Yes Yes
E 450 Diphosphates Yes Yes
E 451 Triphosphates Yes Yes
E 452 Polyphosphates Yes Yes
E 500 Sodium carbonates Yes Yes
E 501 Potassium carbonates Yes Yes
E 503 Ammonium carbonates Yes Yes
E 504 Magnesium carbonates Yes Yes
E 505 Yes Yes
E 507 Hydrochloric acid Yes Yes
E 508 Potassium chloride Yes Yes
E 510 Yes Yes
E 513 Sulphuric acid Yes Yes
E 514 Sodium sulphates Yes Yes
E 515 Potassium sulphates Yes Yes
E 520 Aluminium sulphate Yes Yes
E 521 Aluminium sodium sulphate Yes Yes
E 522 Aluminium potassium sulphate Yes Yes
E 523 Aluminium ammonium sulphate Yes Yes
E 524 Sodium hydroxide Yes Yes
E 525 Potassium hydroxide Yes Yes
E 526 Calcium hydroxide Yes Yes
E 527 Ammonium hydroxide Yes Yes
E 528 Magnesium hydroxide Yes Yes
E 529 Calcium oxide Yes Yes
E 530 Magnesium oxide Yes Yes
E 540 Yes Yes
E 541 Sodium aluminium phosphate Yes Yes
E 543 Yes Yes
E 574 Gluconic acid Yes Yes
E 575 Glucono delta-lactone Yes Yes
E 578 Calcium gluconate Yes Yes
E 580 Yes Yes