California Code of Regulations
Title 3 - Food and Agriculture
Division 4 - Plant Industry
Chapter 2 - Field Crops
Subchapter 2 - Commercial Feed
Article 14 - Definitions and Standards
Section 2790 - Mineral Feeds

(a) Formula feeds containing more than 9.0 percent of Ash require, in addition to the usual label declaration of the chemical feed analysis, a declaration of each ingredient and the guarantees for the following, if present:

(b) Shell Marl is ground shells of oysters, clams, or other mollusks with impurities of sand and clay and containing less than 90.0 percent of calcium carbonate. It may bear a name descriptive of its kind. It shall be labeled to state plainly the minimum percentage of calcium carbonate (CaCO3) and the equivalent amount of calcium (Ca).

(c) Marl is a natural mixture of chalk, sand, and clay. It may bear a name descriptive of its kind. It shall be labeled to state plainly the minimum percentage of calcium carbonate (CaCO3) and the equivalent amount of calcium (Ca).

(d) Trace Mineralized Salty is common salt containing significant amounts of trace minerals which are recognized as essential for animal nutrition. Significant amounts defined are not less than 0.010 percent cobalt, 0.033 percent copper, 0.160 percent iron, 0.007 percent iodine, 0.200 percent manganese, and 0.005 percent zinc.

(e) Bone Ash is the ash obtained by burning bones with free access to air, and containing a minimum of 15.3 percent phosphorus (P). The label must show a guarantee for calcium (Ca) and phosphorus (P).

(f) Bone Charcoal is obtained by charring bones in a closed retort and contains a minimum of 14.0 percent phosphorus (P). It must be labeled with guarantees for calcium (Ca) and phosphorus (P). (This product is sometimes referred to as "Bone Black," however, bone charcoal shall be used in all labeling.)

(g) Calcite is an acceptable source of calcium carbonate. It shall be true to name and contain not less than 33.0 percent calcium (Ca).

(h) Oyster Shell Flour is an acceptable source of calcium carbonate. It shall be true to name and contain not less than 33.0 percent calcium (Ca).

(i) Shell Flour is an acceptable source of calcium carbonate. It shall be true to name and contain not less than 33.0 percent calcium (Ca).

(j) Chalk Rock is an acceptable source of calcium carbonate. It shall be true to name and contain not less than 33.0 percent calcium (Ca).

(k) Calcium Carbonate, Precipitated, is an acceptable source of calcium carbonate. It shall be true to name and contain not less than 33.0 percent calcium (Ca).

(l) Chalk, Precipitated, is an acceptable source of calcium carbonate. It shall be true to name and contain not less than 33.0 percent calcium (Ca). Precipitated chalk must be used in all labeling.

(m) Limestone, Ground, is an acceptable source of calcium carbonate. It shall be true to name and contain not less than 33.0 percent calcium (Ca). Ground limestone must be used in all labeling.

(n) Calcium Carbonate is a product true to name which contains a minimum of 38.0 percent calcium (Ca).

(o) Limestone, Magnesium, or Dolomitic, is an acceptable source of magnesium and calcium carbonate. The terms are synonymous and designate a native mineral composed of mixtures of magnesium carbonate (MgCO3), and calcium carbonate (CaCO3). It contains not less than 10.0 percent magnesium (Mg) and shall be stated as an ingredient as magnesium limestone or dolomitic limestone.

(p) Phosphate, Defluorinated, includes either calcined, fused, or precipitated calcium phosphate. It contains not more than one part of fluorine (F) to 100 parts of phosphorus (P). The minimum percent of calcium (Ca) and phosphorus (P) and the maximum percent of fluorine (F), and Sodium (Na), shall be stated on the label. The term "defluorinated" shall not be used as a part of the name of any product containing more than one part of fluorine (F) to 100 parts of phosphorus (P). The term "defluorinated phosphate" shall be used in labeling ingredient listings.

(q) Iodized Salt is salt (NaCl) containing not less than 0.007 percent iodine, uniformly distributed.

(r) Bone Phosphate is the residue of bones that have been treated first in a caustic solution, then in a hydrochloric acid solution, and thereafter precipitated with lime and dried. It contains a minimum of 17.0 percent phosphorus (P). It shall be labeled with guarantees for calcium (Ca) and phosphorus (P).

(s) Rock Phosphate, Soft, is the very finely divided by-product (washings) obtained from mining Florida rock phosphate by the hydraulic process. It contains a minimum of 9.0 percent phosphorus (P) and 15.0 percent calcium (Ca), and not more than 30.0 percent clay and 1.5 percent fluorine (F). The term "soft rock phosphate" shall be used in labeling.

(t) Diammonium Phosphate is the product resulting from the neutralization of phosphoric acid, feed grade, or defluorinated wet-process phosphoric acid which contains not less than 17.0 percent nitrogen (N) and 20.0 percent phosphorus (P). It contains not more than 1 part fluorine (F) to 100 parts phosphorus (P), 75 ppm of arsenic (As), and 30 ppm of heavy metals reported as lead. It does not include diammonium phosphate made from by-product ammonia absorbed from coke-oven gas. It shall be used only in ruminant feeds as a source of phosphorus and nitrogen in an amount that supplies not more than 2.0 percent of equivalent crude protein in the total daily ration. If a premix, concentrate, or supplement contains more than 2.0 percent of equivalent crude protein from diammonium phosphate, the label must contain adequate directions for use and a prominent statement, "Caution: Use only as directed." The caution statement shall be in prominent bold type against a contrasting background.

(u) Bone Charcoal, Spent, is the product resulting from the repeated charring of bone charcoal after use in clarifying sugar solutions. It contains a minimum of 11.5 percent phosphorus (P). It shall be labeled with guarantees for phosphorus (P) and calcium (Ca). (This product is sometimes referred to as "Spent Bone Black," however, spent bone charcoal shall be used in labeling.)

(v) Bone Meal, Steamed, is the dried and ground product sterilized by cooking undecomposed bones with steam under pressure. Grease, gelatin, and meat fiber may or may not be removed. It shall be labeled with guarantees for phosphorus (P) and calcium (Ca). "Steamed Bone Meal" shall be used in labeling.

(w) Phosphoric Acid, Feed Grade ___ percent is a solution of phosphoric acid in water. It contains not more than 100 ppm fluorine (F), 3.2 ppm arsenic (As), and 1.3 ppm of heavy metals reported as lead for each percentage of phosphorus. If manufactured by the electric furnace method, the color is to be white or amber, and turbidity clear to faintly hazy. If manufactured by the wet-process method, the color is dark brown to blackish, with marked turbidity. When this ingredient is used as a constituent in mixed feeds, it must be called phosphoric acid in the ingredient list.

(x) Rock Phosphate, Ground, is ground phosphate rock. It shall be labeled with guarantees for calcium (Ca) and phosphorus (P) and a maximum guarantee for fluorine (F). "Ground Rock Phosphate" shall be used in labeling.

(y) Rock Phosphate, Ground, Low Fluorine is ground phosphate rock that contains not more than 0.5 percent fluorine (F). "Low Fluorine Ground Rock Phosphate" shall be used in labeling. It shall be labeled with guarantees for minimum percentages of calcium (Ca) and phosphorus (P) and for a maximum percentage of fluorine (F).

(z) Ammonium Polyphosphate Solution is the product resulting from the neutralization of superphosphoric acid. It shall contain not less than 9.0 percent nitrogen (N) and 13.0 percent phosphorus (P). It shall contain not more than one part fluorine (F) to 100 parts phosphorus (P), 75 ppm of arsenic (As), and 30 ppm of heavy metals reported as lead. It may be used in ruminant feeds as a source of both phosphorus and nitrogen in an amount that supplies not more than 2.0 percent of equivalent crude protein in the total daily ration.

(aa) Metal Proteinate is the product resulting from the chelation of a soluable salt with amino acids or partially hydrolyzed protein. It shall be declared as an ingredient as the specific metal proteinate: i.e., "Copper Proteinate," "Zinc Proteinate," etc.

(bb) Smectite-Vermiculite is a natural occurring magnesium, iron, and potassium layer silicate. It shall be labeled with guarantees for magnesium (Mg), iron (Fe), and potassium (K).

(cc) Calcium Periodate is a source of iodine produced by reacting calcium iodate with calcium hydroxide or calcium oxide to form a substance consisting of not less than 60.0 percent by weight of penta calcium orthoperiodate containing 28.0 to 31.0 percent by weight of iodine. It may be used in salt for livestock as a source of iodine.

(dd) Mono-ammonium Phosphate is the product resulting from the neutralization of phosphoric acid, feed grade, or defluorinated wet-process phosphoric acid with ammonia and shall contain not less than 9.0 percent nitrogen (N), and 24.0 percent phosphorus (P). It shall contain not more than one part fluorine (F) to 100 parts phosphorus (P), 75 ppm of arsenic (As), and 30 ppm of heavy metals reported as lead. It shall be used only in ruminant feeds as a source of phosphorus and nitrogen in an amount that supplies not more than 2.0 percent of equivalent crude protein in the total daily ration. If a premix, concentrate or supplement contains more than 2.0 percent of equivalent crude protein from mono-ammonium phosphate, the label must contain adequate directions for use, and a prominent statement, "Caution: Use only as directed." The caution statement shall be in prominent bold type against a contrasting background.

(ee) Ammonium Sulfate is the product resulting from the neutralization of sulfuric acid with ammonia. It shall contain not less than 21.0 percent nitrogen (N) and not less than 24.0 percent sulfur (S). It shall contain not more than 75 ppm arsenic (As) and 30 ppm heavy metals reported as lead. This does not include ammonium sulfate made from by-product ammonia recovered from coke-oven gas. It shall be used only in ruminant feeds as a source of sulfur and nitrogen in an amount that supplies not more than 2.0 percent of equivalent crude protein from ammonium sulfate. The label shall have adequate directions for use and a prominent statement, "Caution -- This feed shall be used only in accordance with directions furnished on the label".

(ff) Metal Polysaccharide Complex is the product resulting from complexing of a soluble salt with a polysaccharide solution declared as an ingredient as the specific metal complex: i.e., copper polysaccharide complex; zinc polysaccharide complex; iron polysaccharide complex, etc.

(gg) Additional Officially Recognized Mineral Ingredients.

The following inorganic (mineral) chemicals are recognized as suitable ingredients in animal feeds under controlled conditions. They shall be of purity equal to the commonly recognized "commercial grade" for the article and shall be declared as ingredients by the following names:

(hh) Dicalcium Phosphate is a calcium salt of phosphoric acid, generally expressed as CaHPO4, and its hydrated forms. Minimum percent phosphorus (P), minimum percent calcium (Ca) and maximum percent fluorine (F) must be specified. It shall be labeled to show a maximum of 1 part fluorine (F) to 100 parts phosphorus (P).

(ii) Monocalcium Phosphate is a calcium salt of phosphoric acid, generally expressed as CaH4(PO4)2, and its hydrated forms. Minimum percent phosphorus (P), minimum percent calcium (Ca) and maximum percent fluorine (F) must be specified. It shall be labeled to show a maximum of 1 part fluorine (F) to 100 parts phosphorus (P).