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View the OMRI Generic Materials List Glossary in PDF format here.
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Packaging Materials - Nonsynthetic
Allowed
Processing Packaging and Containers
Nonsynthetic Nonagricultural
Packaging materials made entirely of nonsynthetic materials are allowed.
Pancreatin
Allowed
Processing Non-agricultural Ingredients and Processing Aids
Nonsynthetic Nonagricultural
See also ENZYMES – ANIMAL-DERIVED.
205.605(a) Animal enzymes… Pancreatin.
Pantothenic Acid
Allowed with Restrictions
Livestock Feed Ingredients, Livestock Health Care
Synthetic/Nonsynthetic
Derived from calcium pantothenate and sodium pantothenate. See also VITAMINS.
205.237(a), 205.237(b)(2) & 205.603(d)(3)
Paper
Allowed with Restrictions
Crop Fertilizers and Soil Amendments, Crop Pest, Weed, and Disease Control
Synthetic
Paper may only be used as a mulch or compost feedstock. Must be made from newspaper or other recycled paper, without glossy or colored inks. Mulches may be incorporated into the soil provided that they are fully biodegradable. See also COMPOST listings.
205.206(c)(1), 205.601(b)(2)(i) & 205.601(c) As herbicides, weed barriers, as applicable… Mulches. As compost feedstocks—Newspaper or other recycled paper, without glossy or colored inks.
Paprika Color
Allowed with Restrictions
Processing Agricultural Ingredients and Processing Aids
Nonsynthetic Agricultural
Nonorganic sources may be used in or on processed products labeled as “organic” only when not commercially available in organic form. See AGRICULTURAL INGREDIENTS – NONORGANIC for more information on the use of nonorganic agricultural ingredients.
205.301(b),(c),(f) & 205.606(d)(12)
Paraffin
Prohibited
Processing Non-agricultural Ingredients and Processing Aids
Synthetic Nonagricultural
See also WAX listings.
205.105(c) [General prohibition]
Parasiticides – nonsynthetic, external
Allowed
Livestock External Parasiticides and Pesticides, Livestock Health Care
Nonsynthetic
See also PYRETHRUM, DIATOMACEOUS EARTH, HYDRATED LIME (CALCIUM HYDROXIDE), and LIMONENE. See Glossary for definition of "parasiticide."
205.105 & 205.238(c)(1)
Parasiticides – nonsynthetic, internal
Allowed with Restrictions
Livestock External Parasiticides and Pesticides, Livestock Health Care
Nonsynthetic
See also DIATOMACEOUS EARTH, and HERBAL PREPARATIONS listings. See Glossary for definition of "parasiticide."
205.105 & 205.238(c)(1)
Parasiticides – synthetic, external
Prohibited
Livestock External Parasiticides and Pesticides, Livestock Health Care
Synthetic
External synthetic parasiticides that are not explicitly listed as allowed or restricted are prohibited. See Glossary for definition of "parasiticide."
205.105(a), 205.238(b) & 205.238(c)(4)
Parasiticides – synthetic, internal
Prohibited
Livestock External Parasiticides and Pesticides, Livestock Health Care
Synthetic
Internal synthetic parasiticides that are not explicitly listed as allowed or restricted are prohibited. See Glossary for definition of "parasiticide."
205.105(a) & 205.238(b)
Peanut Meal
Allowed
Crop Fertilizers and Soil Amendments
Nonsynthetic
205.203(c)(3) Uncomposted plant materials.
Peat Moss
Allowed
Crop Fertilizers and Soil Amendments, Crop Management Tools and Production Aids
Nonsynthetic
Must not contain synthetic wetting agents.
205.105 A mined substance of low solubility.
Pectin
Allowed
Livestock Feed Ingredients
Nonsynthetic Agricultural
Must be organic when used as a carrier in additives and supplements. See also CARRIERS listings.
Pectin (high-methoxy)
Allowed
Livestock Feed Ingredients
Nonsynthetic
When used in feed, must be organic
205.237(a), 205.238(a)(2) & 205.606(t)
Pectin (high-methoxy)
Allowed with Restrictions
Livestock Health Care
Nonsynthetic
Nonorganic and organic high-methoxy pectin may be used for health care treatments. May not be administered in the absence of illness.
205.238(a)(6) & 205.238(c)(2)
Pectin – high methoxy
Allowed with Restrictions
Processing Agricultural Ingredients and Processing Aids
Agricultural
Nonorganically produced high methoxy pectin may be used in processed products labeled as ‘Made with Organic [specified ingredients]’ provided that the high methoxy pectin is not claimed to be organic and is not produced or handled with the use of sewage sludge, genetic engineering, genetically modified organisms (GMOs), or ionizing radiation. High methoxy pectin may also be used in or on processed products labeled as “organic” only when the certifier determines that the ingredient is not commercially available in an organic form and that it meets the requirements of 205.301(b) and 205.301(f). Non-amidated forms only.
205.301(b),(c),(f) & 205.606(t)
Pectin – low methoxy
Allowed with Restrictions
Processing Agricultural Ingredients and Processing Aids
Nonsynthetic Agricultural
Nonorganically produced low methoxy pectin may be used in processed products labeled as ‘Made with Organic [specified ingredients]’ provided that the low-methoxy pectin is not claimed to be organic and is not produced or handled with the use of sewage sludge, genetic engineering, genetically modified organisms (GMOs), or ionizing radiation. Low-methoxy pectin may also be used in or on processed products labeled as “organic” only when the certifier determines that the ingredient is not commercially available in an organic form and that it meets the requirements of 205.301(b) and 205.301(f). Non-amidated forms only.
Pectolytic Enzymes
Allowed
Processing Non-agricultural Ingredients and Processing Aids
Nonsynthetic Nonagricultural
See also ENZYMES listings.
205.605(a)
Pelargonic Acid
Prohibited
Crop Management Tools and Production Aids, Crop Pest, Weed, and Disease Control
Synthetic
205.105(a)
Pentachlorophenol
Prohibited
Crop Management Tools and Production Aids
Synthetic
205.105(a)
Peppers (Chipotle Chile)
Allowed with Restrictions
Processing Agricultural Ingredients and Processing Aids
Nonsynthetic Agricultural
Nonorganic sources may be used in or on processed products labeled as “organic” only when not commercially available in organic form. See AGRICULTURAL INGREDIENTS – NONORGANIC for more information on the use of nonorganic agricultural ingredients.
205.301(b),(c),(f) & 205.606(u)
Pepsin
Allowed
Processing Non-agricultural Ingredients and Processing Aids
Nonsynthetic Nonagricultural
See also ENZYMES – ANIMAL-DERIVED.
205.605(a) Animal enzymes… Pepsin.
Peracetic Acid
Allowed with Restrictions
Crop Pest, Weed, and Disease Control
Synthetic
May be used as a pesticide to control fireblight and to disinfect equipment, seed and asexually propagated planting material (i.e., bulbs, corms, tubers) if the requirements of 205.206(e) are met. Also permitted in hydrogen peroxide formulations as allowed in § 205.601(a) and 205.601(i) at concentration of no more than 6% as indicated on the pesticide product label. Also called periacetic acid or peroxyacetic acid.
205.206(e) & 205.601(i)(8) [F]or use to control fire blight bacteria.
Peracetic Acid/Peroxyacetic Acid
Allowed
Processing Sanitizers and Cleaners
Synthetic Nonagricultural
For use in wash and/or rinse water according to FDA limitations.
205.605(b)
Peracetic Acid/Peroxyacetic Acid
Allowed with Restrictions
Processing Sanitizers and Cleaners
Synthetic
Peracetic Acid/Peroxyacetic Acid formulations that do not meet FDA limitations for food contact are allowed for use as a sanitizer on food contact surfaces only.
205.605(b)
Perlite
Allowed
Crop Fertilizers and Soil Amendments
Nonsynthetic
See MINED MINERALS – UNPROCESSED.
205.203(d)(2) A mined substance of low solubility.
Perlite
Allowed with Restrictions
Processing Non-agricultural Ingredients and Processing Aids
Nonsynthetic Nonagricultural
For use only as a filter aid in food processing.
205.605(a)
Permanganate of Potash
Prohibited
Crop Fertilizers and Soil Amendments
Synthetic
205.105(a)
Peroxyacetic/Peracetic Acid (CAS #79-21-0)
Allowed with Restrictions
Crop Management Tools and Production Aids
Synthetic
Also called periacetic acid. May only be used for disinfecting facility, processing equipment, seed and asexually propagated planting material.Also permitted in hydrogen peroxide formulations as allowed in § 205.601(a) and 205.601(i) at a concentration of no more than 6% as indicated on the pesticide product label.
205.601(a)(6) & 205.601(i)(8)
Peroxyacetic/Peracetic Acid (CAS #79-21-0)
Allowed with Restrictions
Livestock Management Tools and Production Aids
Synthetic
For sanitizing facility and processing equipment.
Pesticides – synthetic
Prohibited
Crop Pest, Weed, and Disease Control
Synthetic
All synthetic pesticides not explicitly allowed or restricted are prohibited. See Glossary for definition of "pesticide."
205.105(a)
Petroleum Oils
Prohibited
Livestock Feed Ingredients
Synthetic
Prohibited as a synthetic feed additive not on the National List. See also MINERAL OIL for allowed health care applications. See Glossary for definition of "petroleum oils."
205.105(a)
Petroleum Oils
Allowed with Restrictions
Livestock Health Care
Synthetic
See also MINERAL OIL. See Glossary for definition of "petroleum oils."
205.603(b)(6)
pH Adjusters
Allowed
Processing Non-agricultural Ingredients and Processing Aids
Nonsynthetic Nonagricultural
Must be from a source on the National List at 205.605 such as "acids" (citric acid or lactic acid), L-malic acid, or sodium bicarbonate or carbonate, or from organic agricultural sources such as vinegar.
205.605
pH Adjusters
Prohibited
Processing Non-agricultural Ingredients and Processing Aids
Synthetic Nonagricultural
Synthetic pH adjusters, such as sulfuric acid, are prohibited.
205.105(c) [General prohibition]
pH Buffers
Allowed
Crop Management Tools and Production Aids
Nonsynthetic
Must be from a nonsynthetic source such as citric acid or vinegar. Lye and sulfuric acid are prohibited.
205.105
Pheromones
Prohibited
Livestock Management Tools and Production Aids
Synthetic
205.105(a) & 205.238(c)(1)
Pheromones
Allowed with Restrictions
Crop Pest, Weed, and Disease Control
Synthetic
Pheromones are considered pesticides according to the NOP definition of pesticides. May not be combined with synthetic substances except for EPA List 3 inerts used in passive pheromone dispensers and List 4 inerts. May be used only if the requirements of 205.206(e) are met.
205.601(f) & 205.601(m)(2) As insect management. EPA List 3—Inerts of unknown toxicity—for use only in passive pheromone dispensers.
Pheromones
Allowed
Processing Pest Controls
Synthetic/Nonsynthetic
Lures and repellents using nonsynthetic or synthetic substances consistent with the National List
205.271(b)(2)
Phosphate Rock
Allowed
Crop Fertilizers and Soil Amendments
Nonsynthetic
Must not be fortified or processed with synthetic chemicals. Includes colloidal phosphate rock. See also MINED MINERALS – UNPROCESSED.
205.203(d)(2) A mined substance of low solubility.
Phosphoric Acid
Allowed with Restrictions
Livestock Management Tools and Production Aids
Synthetic
For use only as an equipment cleaner. Direct contact with organic livestock or land is prohibited.
205.603(a)(20) Phosphoric acid—allowed as an equipment cleaner, Provided, That, no direct contact with organically managed livestock or land occurs.
Phosphoric Acid
Allowed with Restrictions
Processing Sanitizers and Cleaners
Synthetic Nonagricultural
For cleaning food contact surfaces and equipment.
205.605(b)
Phosphoric Acid – synthetic
Allowed with Restrictions
Crop Fertilizers and Soil Amendments, Crop Management Tools and Production Aids
Synthetic
Used for stabilizing liquid fish products only. See also FISH PRODUCTS, LIQUID – STABILIZED and FISH PRODUCTS, MULTI-INGREDIENT.
Phosphorous – nonsynthetic
Allowed
Livestock Feed Ingredients, Livestock Health Care
Nonsynthetic
Sources include ground rock phosphate, low fluorine rock phosphate, and soft rock phosphate. See also MINERALS listings.
205.237(a), 205.237(b)(2) & 205.603(d)(2)
Phosphorous – synthetic
Allowed with Restrictions
Livestock Feed Ingredients, Livestock Health Care
Synthetic
May be supplied by calcium glycerophosphate, calcium phosphates (mono-, di-, and tricalcium phosphates), calcium pyrophosphate, potassium glycerophosphate, sodium acid pyrophosphate, sodium aluminum phosphate, sodium phosphates (mono-, di-, and trisodium phosphates), or sodium tripolyphosphate. See also MINERALS – FEED & HEALTH CARE.
205.237(a), 205.237(b)(2) & 205.603(d)(2)
Physical Methods
Allowed
Crop Pest, Weed, and Disease Control
Nonsynthetic
Includes traps and sticky tape.
205.206(b) Pest problems may be controlled through mechanical or physical methods.
Phytase
Allowed
Livestock Feed Ingredients
Nonsynthetic
Must not be from genetically modified sources. See also ENZYMES.
205.237(a)
Piperonyl Butoxide
Prohibited
Crop Pest, Weed, and Disease Control
Synthetic
Although this material is derived from a plant source originally, it undergoes a substantial molecular change during its extraction and processing. Check the labels on botanicals to ensure this material is not included.
205.105(a)
Piperonyl Butoxide
Prohibited
Livestock External Parasiticides and Pesticides
Synthetic
Prohibited as a synergist for external parasiticides and livestock pest controls.
205.105(a)
Plant Extracts
Allowed
Crop Fertilizers and Soil Amendments, Crop Management Tools and Production Aids
Nonsynthetic
Allowed unless otherwise specifically restricted or prohibited. Allowed extractants include cocoa butter, alcohols, saponins, and water. For information on plant extracts that are biocidal in nature see PLANT EXTRACTS – PESTICIDE. See Glossary for definition of "plant extract."
205.105 & 205.206(b)(3) Nonsynthetic controls such as lures, traps, and repellents.