Non-Hazardous Chemicals List
This is an alphabetical listing of the chemicals that have been determined to be non-hazardous wastes. If you know the name of the chemical you are looking for, use the first letter below, or just scroll though the list. If you have any questions you can call Environmental Health and Safety at x3461.
A
| Waste Name | Waste Description | Disposal Method |
| Acid Waste with pH at or above 4 | Contains no heavy metals or hazardous properties | sanitary sewer |
| Actin | any concentration | liquid: sanitary sewer solid: trash |
| A-Adenosine, free base | any concentration | liquid: sanitary sewer solid: trash |
| Adenosine 2′ & 3′-monophosphate, disodium salt | any concentration | liquid: sanitary sewer solid: trash |
| Adenosine 2′ & 3′-monophosphate, free acid | any concentration | liquid: sanitary sewer solid: trash |
| Adenosine 2′,3′-cyclic monophosphate, sodium salt | any concentration | liquid: sanitary sewer solid: trash |
| Adenosine 3′,5′-cyclic monophosphate, sodium salt | any concentration | liquid: sanitary sewer solid: trash |
| Adenosine 3′-monophosphate, sodium salt | any concentration | liquid: sanitary sewer solid: trash |
| Adenosine 5′-diphosphate, sodium salt | any concentration | liquid: sanitary sewer solid: trash |
| Adenosine 5′-monophosphate | any concentration | liquid: sanitary sewer solid: trash |
| Adenosine 5′-monophosphate, disodium salt | any concentration | liquid: sanitary sewer solid: trash |
| Adenosine 5′-monophosphate, sodium salt | any concentration | liquid: sanitary sewer solid: trash |
| Adonitol; Ribitol | any concentration | liquid: sanitary sewer solid: trash |
| Agar; Bacto agar | any concentration | liquid: sanitary sewer solid: trash |
| Agarose | any concentration | liquid: sanitary sewer solid: trash |
| Aginic acid, sodium salt; Sodium alginate | any concentration | liquid: sanitary sewer solid: trash |
| b-Alanine | any concentration | liquid: sanitary sewer solid: trash |
| DL-Alanine | any concentration | liquid: sanitary sewer solid: trash |
| L-Alanine | any concentration | liquid: sanitary sewer solid: trash |
| Albumin, bovine | any concentration | liquid: sanitary sewer solid: trash |
| Albumin, bovine, methylated | any concentration | liquid: sanitary sewer solid: trash |
| Albumin, human | any concentration | liquid: sanitary sewer solid: trash |
| Albumin, human, 30% solution | any concentration | liquid: sanitary sewer solid: trash |
| Alcohol dehydrogenase | any concentration | liquid: sanitary sewer solid: trash |
| Aldolase, type X | any concentration | liquid: sanitary sewer solid: trash |
| DL-Aminobutyric acid; GABA | any concentration | liquid: sanitary sewer solid: trash |
| 4-Amino-2-methyl-1-naphthol; Vitamin K5 | any concentration | liquid: sanitary sewer solid: trash |
| Amylase | any concentration | liquid: sanitary sewer solid: trash |
| A-Amylase, type II-A | any concentration | liquid: sanitary sewer solid: trash |
| A-Amylase, type VI-B | any concentration | liquid: sanitary sewer solid: trash |
| B-Amylase, sweet potato | any concentration | liquid: sanitary sewer solid: trash |
| Amyloglucosidase | any concentration | liquid: sanitary sewer solid: trash |
| Amylose | any concentration | liquid: sanitary sewer solid: trash |
| Antifoam A emulsion | any concentration | liquid: sanitary sewer solid: trash |
| APV | up to 3 M | liquid: sanitary sewer |
| Apyrase, grade VI | any concentration | liquid: sanitary sewer solid: trash |
| D-Arabinose | any concentration | liquid: sanitary sewer solid: trash |
| L(+) Arabinose | any concentration | liquid: sanitary sewer solid: trash |
| D-Arabitol | any concentration | liquid: sanitary sewer solid: trash |
| Arginase | any concentration | liquid: sanitary sewer solid: trash |
| Arginine | any concentration | liquid: sanitary sewer solid: trash |
| L-(+)-Arginine | any concentration | liquid: sanitary sewer solid: trash |
| D-Asparagine, monohydrate | any concentration | liquid: sanitary sewer solid: trash |
| DL-Asparagine | any concentration | liquid: sanitary sewer solid: trash |
| L-Asparagine | any concentration | liquid: sanitary sewer solid: trash |
| Aspartamene; Asp-phe methyl ester; L-Aspartyl-L-phenylalanine methyl ester | any concentration | liquid: sanitary sewer solid: trash |
| D-Aspartic acid | any concentration | liquid: sanitary sewer solid: trash |
| DL-Aspartic acid | any concentration | liquid: sanitary sewer solid: trash |
| L-Aspartic acid | any concentration | liquid: sanitary sewer solid: trash |
| L-Aspartic acid, monosodium salt | any concentration | liquid: sanitary sewer solid: trash |
| Atropine | up to 0.15 M | liquid: sanitary sewer |
| Autex developer and replenisher | working solution concentration | liquid: sanitary sewer |
B
| Waste Name | Waste Description | Disposal Method |
| Baclofen | up to 0.07 M | liquid: sanitary sewer |
| Bacto peptone; Peptone | any concentration | liquid: sanitary sewer solid: trash |
| Base waste, pH at or less than 10 | Contains only non-heavy metal base and water | sanitary sewer |
| Bayberry wax | any concentration | liquid: sanitary sewer solid: trash |
| Bentonite | any concentration | liquid: sanitary sewer solid: trash |
| Beta-Glucuronidase, type VIII | any concentration | liquid: sanitary sewer solid: trash |
| Betaine | any concentration | liquid: sanitary sewer solid: trash |
| Bicuculline | up to 7 mM | liquid: sanitary sewer |
| Bile salts | any concentration | liquid: sanitary sewer solid: trash |
| Biocytin | any concentration | liquid: sanitary sewer solid: trash |
| Bromelain | any concentration | liquid: sanitary sewer solid: trash |
C
| Waste Name | Waste Description | Disposal Method |
| Calcium citrate | any concentration | liquid: sanitary sewer solid: trash |
| Calcium phosphate, monobasic | any concentration | liquid: sanitary sewer solid: trash |
| Calcium sulfate (Dierite) | any concentration | liquid: sanitary sewer solid: place in closed bag, then in trash |
| Carbachol chloride | up to 20 mM | liquid: sanitary sewer |
| Carbonic anhydrase | any concentration | liquid: sanitary sewer solid: trash |
| Carboxypeptidase B, type I | any concentration | liquid: sanitary sewer solid: trash |
| Carboxypeptidase Y | any concentration | liquid: sanitary sewer solid: trash |
| Carminic acid | any concentration | liquid: sanitary sewer solid: trash |
| Carrageenan, type II | any concentration | liquid: sanitary sewer solid: trash |
| B-Carotene type IV; Carotene type III; Carotene, trans-b- | any concentration | liquid: sanitary sewer solid: trash |
| Carrageenan, type IV | any concentration | liquid: sanitary sewer solid: trash |
| Casein | any concentration | liquid: sanitary sewer solid: trash |
| Cellobiose, D(+) | any concentration | liquid: sanitary sewer solid: trash |
| Cellulase type I, II, V, VI, and VII | any concentration | liquid: sanitary sewer solid: trash |
| Chalk; Protexulate; Calcium carbonate | any concentration | liquid: sanitary sewer solid: trash |
| Chitin | any concentration | liquid: sanitary sewer solid: trash |
| 2-Chloroadenosine | up to 15 mM | liquid: sanitary sewer |
| Chondroitin sulfate A, sodium salt | any concentration | liquid: sanitary sewer solid: trash |
| CM Cellulose powder; Carboxymethyl cellulose | any concentration | liquid: sanitary sewer solid: trash |
| L-Citrulline | any concentration | liquid: sanitary sewer solid: trash |
| Cocarboxylase | any concentration | liquid: sanitary sewer solid: trash |
| Coenzyme A, sodium salt | any concentration | liquid: sanitary sewer solid: trash |
| Collagen | any concentration | liquid: sanitary sewer solid: trash |
| Collagenase | any concentration | liquid: sanitary sewer solid: trash |
| Coulture waste | < 0.0015% KCN, < 0.078% ammonia salt, <0.061% isopropanol, remainder saline | sanitary sewer |
| a-Chymotrypsinogen A | any concentration | liquid: sanitary sewer solid: trash |
| DL-Cystine | any concentration | liquid: sanitary sewer solid: trash |
| Cytidine 2’&3′-monophosphate, free acid | any concentration | liquid: sanitary sewer solid: trash |
| Cytidine 2′-monophosphate, sodium salt | any concentration | liquid: sanitary sewer solid: trash |
| Cytidine 5′-triphosphate, sodium salt | any concentration | liquid: sanitary sewer solid: trash |
| Cytosine | any concentration | liquid: sanitary sewer solid: trash |
D
| Waste Name | Waste Description | Disposal Method |
| Dehydroisoandrosterone 3-sulfate, sodium salt dihydrate; Sodium dehydroepiandrosterone sulfate | any concentration | liquid: sanitary sewer solid: trash |
| 2′-Deoxyadenosine 5′-triphosphate | any concentration | liquid: sanitary sewer solid: trash |
| Deoxyepinephrine hydrochloride | any concentration | liquid: sanitary sewer solid: trash |
| Deoxyribonucleic acid, type XV | any concentration | liquid: sanitary sewer solid: trash |
| 2-Deoxy-D-ribose | any concentration | liquid: sanitary sewer solid: trash |
| Deuterium oxide; Heavy water | any concentration | liquid: sanitary sewer solid: trash |
| Dextran | any concentration | liquid: sanitary sewer solid: trash |
| Dextrose, monohydrate; glucose | any concentration | liquid: sanitary sewer solid: trash |
| Diphenylmethane | any concentration | liquid: sanitary sewer solid: trash |
| 2′,4′-Dimethylacetophenone | any concentration | liquid: sanitary sewer solid: trash |
| DNA Polymerase I | any concentration | liquid: sanitary sewer solid: trash |
E
| Waste Name | Waste Description | Disposal Method |
| Egg albumin | any concentration | liquid: sanitary sewer solid: trash |
| Elastase, type III | any concentration | liquid: sanitary sewer solid: trash |
| Elastin-orcein | any concentration | liquid: sanitary sewer solid: trash |
| Enolase | any concentration | liquid: sanitary sewer solid: trash |
| D-Erythrose | any concentration | liquid: sanitary sewer solid: trash |
| Ethanol | 10 % or less concentration | sanitary sewer |
| Ethidium bromide buffer | Ethidium bromide < 0.1wt% | sanitary sewer |
| Ethidium bromide gel | Ethidium bromide < 0.1 wt% in non-polyacyrlamide gel | place into closed bag, then into trash |
F
| Waste Name | Waste Description | Disposal Method |
| Fibrin | any concentration | liquid: sanitary sewer solid: trash |
| Fibrinogen, human type I | any concentration | liquid: sanitary sewer solid: trash |
| Fibronectin | any concentration | liquid: sanitary sewer solid: trash |
| Flavin adenine dinucleotide | any concentration | liquid: sanitary sewer solid: trash |
| Folic acid | any concentration | liquid: sanitary sewer solid: trash |
| Fomblin oil | any concentration | Sanitary sewer |
| D-Fructose | any concentration | liquid: sanitary sewer solid: trash |
| B-D(-)-Fructose | any concentration | liquid: sanitary sewer solid: trash |
| D-Fructose-1,6-diphosphatase | any concentration | liquid: sanitary sewer solid: trash |
| Fumaric acid, potassium salt | any concentration | liquid: sanitary sewer solid: trash |
G
| Waste Name | Waste Description | Disposal Method |
| Gelatin | any concentration | liquid: sanitary sewer solid: trash |
| Glass beads | any concentration | liquid: sanitary sewer solid: trash |
| A-Glucosidase, type I | any concentration | liquid: sanitary sewer solid: trash |
| b-Glucosidase | any concentration | liquid: sanitary sewer solid: trash |
| B-D(+)Glucose | any concentration | liquid: sanitary sewer solid: trash |
| L-Glucose | any concentration | liquid: sanitary sewer solid: trash |
| Glucose 6-phosphate dehydrogenase | any concentration | liquid: sanitary sewer solid: trash |
| Glucose-6-phosphate | any concentration | liquid: sanitary sewer solid: trash |
| Glutamic acid | up to 50 mM | liquid: sanitary sewer |
| D-Glutamic acid | any concentration | liquid: sanitary sewer solid: trash |
| DL-Glutamic acid | any concentration | liquid: sanitary sewer solid: trash |
| L-Glutamic acid | any concentration | liquid: sanitary sewer solid: trash |
| DL-Glutamic acid, monohydrate | any concentration | liquid: sanitary sewer solid: trash |
| L-Glutamine in saline | any concentration | liquid: sanitary sewer solid: trash |
| Glycerin | any concentration | sanitary sewer |
| D-glycogen | any concentration | liquid: sanitary sewer solid: trash |
| Glyculglycine | any concentration | liquid: sanitary sewer solid: trash |
| Gram’s slide stain rinsate | 1 drop of crystal violet solution, 1 drop of iodine stain solution, 1 drop of acetone/ethanol solution and 1 drop | sanitary sewer |
| Guanosine 3′,5′-cyclic monophosphate, sodium salt | any concentration | liquid: sanitary sewer solid: trash |
| Guanosine 3′-monophosphate, sodium salt | any concentration | liquid: sanitary sewer solid: trash |
| Guanosine 5′-monophosphate | any concentration | liquid: sanitary sewer solid: trash |
| Guar gum | any concentration | liquid: sanitary sewer solid: trash |
| Gum, karaya | any concentration | liquid: sanitary sewer solid: trash |
| Gum, xanthan | any concentration | liquid: sanitary sewer solid: trash |
H
| Waste Name | Waste Description | Disposal Method |
| Hematin | any concentration | liquid: sanitary sewer solid: trash |
| Hemin | any concentration | liquid: sanitary sewer solid: trash |
| Hemoglobin | any concentration | liquid: sanitary sewer solid: trash |
| Hexokinase | any concentration | liquid: sanitary sewer solid: trash |
| Histone | any concentration | liquid: sanitary sewer solid: trash |
| Hyaluronidase, type I-S | any concentration | liquid: sanitary sewer solid: trash |
| Hydrocortisone | any concentration | liquid: sanitary sewer solid: trash |
| Hydrocortisone acetate | any concentration | liquid: sanitary sewer solid: trash |
| DL-Histidine | any concentration | liquid: sanitary sewer solid: trash |
| DL-Homoserine | any concentration | liquid: sanitary sewer solid: trash |
| Hydrogen peroxide | 3% or below | liquid: sanitary sewer |
I
| Waste Name | Waste Description | Disposal Method |
| IgG | any concentration | liquid: sanitary sewer solid: trash |
| Ilford ID 11 | working solution concentration | liquid: sanitary sewer |
| Ilford 2000 RT developer #741759 | working solution concentration | liquid: sanitary sewer |
| Ilford 2150 XL developer #741816 | working solution concentration | liquid: sanitary sewer |
| Inulin | any concentration | liquid: sanitary sewer solid: trash |
| Invertase, grade V | any concentration | liquid: sanitary sewer solid: trash |
| Iron powder | wet or oxidized | solid:trash |
| DL-Isoleucine | any concentration | liquid: sanitary sewer solid: trash |
| Isoproternol | up to 150 mM | liquid: sanitary sewer |
K
| Waste Name | Waste Description | Disposal Method |
| Kaolin | any concentration | liquid: sanitary sewer solid: trash |
| Kodak developer D-11 | working solution concentration | liquid: sanitary sewer |
| Kodak developer D-19 | working solution concentration | liquid: sanitary sewer |
| Kodak developer D-76 | working solution concentration | liquid: sanitary sewer |
| Kodak dektol developer | working solution concentration | liquid: sanitary sewer |
| Kodak microdol X-developer | working solution concentration | liquid: sanitary sewer |
| Kodak Technidol developer | working solution concentration | liquid: sanitary sewer |
| Kodalith developer (A:B = 1:1) | working solution concentration | liquid: sanitary sewer |
L
| Waste Name | Waste Description | Disposal Method |
| L-Lactic dehydrogenase, type XI | any concentration | liquid: sanitary sewer solid: trash |
| L-Proline; CAS # 147-85-3 | any concentration | liquid: sanitary sewer solid: trash |
| L-Serine; CAS# 56-45-1 | any concentration | liquid: sanitary sewer solid: trash |
| L-Sorbose | any concentration | liquid: sanitary sewer solid: trash |
| L-Threonine | any concentration | liquid: sanitary sewer solid: trash |
| L-Valine | any concentration | liquid: sanitary sewer solid: trash |
| D-Lactic dehydrogenase | any concentration | liquid: sanitary sewer solid: trash |
| Lactoferrin | any concentration | liquid: sanitary sewer solid: trash |
| b-Lactoglobulin | any concentration | liquid: sanitary sewer solid: trash |
| alpha-Lactose | any concentration | liquid: sanitary sewer solid: trash |
| Lectin | any concentration | liquid: sanitary sewer solid: trash |
| Lectin from glycine max | any concentration | liquid: sanitary sewer solid: trash |
| Lectin from triticum vulgaris peroxidase labeled | any concentration | liquid: sanitary sewer solid: trash |
| DL-Leucine | any concentration | liquid: sanitary sewer solid: trash |
| Locust bean gum (carob flour) | any concentration | liquid: sanitary sewer solid: trash |
| Lysozyme, grade I (chicken egg) | any concentration | liquid: sanitary sewer solid: trash |
M
| Waste Name | Waste Description | Disposal Method |
| Magnesium hydroxide | any concentration | liquid: sanitary sewer solid: trash |
| D-(+)-Maltose, monohydrate | any concentration | liquid: sanitary sewer solid: trash |
| a-D(+)-Melibiose any concentration | liquid: sanitary sewer | solid: trash |
| Metal articles | pipes, sheets, rocks, cuttings, etc. (materials that are not powdered, finely divided or dissolved and are not made of chromium, copper, lead, nickel, silver and zinc) | small items may be placed into trash, for very large items (janitor cannot handle) make special arrangements with trash company |
| Methyl cellulose (All centipoises) | any concentration | liquid: sanitary sewer solid: trash |
| Monoamine oxidase | any concentration | liquid: sanitary sewer solid: trash |
| MXR RP-HC developer | working solution concentration | liquid: sanitary sewer |
| Myoglobin, human | any concentration | liquid: sanitary sewer solid: trash |
| Myokinase | any concentration | liquid: sanitary sewer solid: trash |
N
| Waste Name | Waste Description | Disposal Method |
| A-NADP, tetrasodium salt; A-Nicotinamide adenine dinucleotide phosphate | any concentration | liquid: sanitary sewer solid: trash |
| NADP; Nicotinamide adenine dinucleotide phosphate | any concentration | liquid: sanitary sewer solid: trash |
| B-Nicotinamide adenine dinucleotide agarose | any concentration | liquid: sanitary sewer solid: trash |
| B-Nicotinamide adenine dinucleotide phosphate, tetrasodium salt | any concentration | liquid: sanitary sewer solid: trash |
| B-Nicotinamide adenine dinucleotide, disodium salt | any concentration | liquid: sanitary sewer solid: trash |
| B-Nicotinamide mononucleotide | any concentration | liquid: sanitary sewer solid: trash |
| Naloxone | up to 0.1 M | liquid: sanitary sewer |
| Nerve growth factor | any concentration | liquid: sanitary sewer solid: trash |
| Neuraminidase, type X and type VIII | any concentration | liquid: sanitary sewer solid: trash |
| Nifedipine | up to 0.3 M | liquid: sanitary sewer |
| Nimodipine | up to 0.7 M | liquid: sanitary sewer |
| Norepinephrine | up to 10 mM | liquid: sanitary sewer |
P
| Waste Name | Waste Description | Disposal Method |
| p-Hydroxybenzoic acid propyl ester | any concentration | liquid: sanitary sewer solid: trash |
| Pantothenic acid | any concentration | liquid: sanitary sewer solid: trash |
| Pantothenic acid, hemicalcium salt; Calcium pantothenate; Vitamin B5, calcium salt | any concentration | liquid: sanitary sewer solid: trash |
| DL-Pantothenic acid, hemicalcium salt | any concentration | liquid: sanitary sewer solid: trash |
| Pectin | any concentration | liquid: sanitary sewer solid: trash |
| Pectinase | any concentration | liquid: sanitary sewer solid: trash |
| Penicillinase, type I | any concentration | liquid: sanitary sewer solid: trash |
| Phentalamine | up to 1500 mM | liquid: sanitary sewer solid: trash |
| Phenylephrine | up to 200 mM | liquid: sanitary sewer solid: trash |
| Phosphatase alkaline, type VII-NT, bovine | any concentration | liquid: sanitary sewer solid: trash |
| Phosphodiesterase | any concentration | liquid: sanitary sewer solid: trash |
| Phosphodiesterase 3′,5′-cyclic nucleotide | any concentration | liquid: sanitary sewer solid: trash |
| Picker 3.7.90 PCI 262889 | working solution concentration | liquid: sanitary sewer |
| Picrotoxin | up to 0.3 mM | liquid: sanitary sewer |
| Plasmin | any concentration | liquid: sanitary sewer solid: trash |
| Polymeric materials, epoxys, adhesives and glues | Hardened, reacted dried or solidified materials only | trash |
| Potassium bitartarate; Potassium hydrogen tartarate; Cream of Tartar | any concentration | liquid: sanitary sewer solid: trash |
| Potassium thiosulfate | any concentration | liquid: sanitary sewer solid: trash |
| Proline | any concentration | liquid: sanitary sewer solid: trash |
| DL-Proline | any concentration | liquid: sanitary sewer solid: trash |
| Propranalol | up to 250 mM | liquid: sanitary sewer solid: trash |
| Prostaglandin F1A antiserum from rabbit | any concentration | liquid: sanitary sewer solid: trash |
| Protease inhibitor from rabbit skeletal muscle | any concentration | liquid: sanitary sewer solid: trash |
| Pyridoxal phosphate | any concentration | liquid: sanitary sewer solid: trash |
R
| Waste Name | Waste Description | Disposal Method |
| Railroad ties | Cresol < 200 ppm | make arrangements with landfill through EH&S |
| Rauwolscine | up to 30 mM | liquid: any concentration |
| Rennin | any concentration | liquid: sanitary sewer solid: trash |
| Riboflavin | any concentration | liquid: sanitary sewer solid: trash |
| D-Ribose 5-phosphate, disodium salt | any concentration | liquid: sanitary sewer solid: trash |
| Ribonuclease A; Ribonuclease S; Ribonuclease T1 | any concentration | liquid: sanitary sewer solid: trash |
| Rosin gum; Rosin wood | any concentration | liquid: sanitary sewer solid: trash |
S
| Waste Name | Waste Description | Disposal Method |
| Saline solution | Less than 50% sodium chloride in water | sanitary sewer |
| Sarcosine | any concentration | liquid: sanitary sewer solid: trash |
| DL-Serine | any concentration | liquid: sanitary sewer solid: trash |
| Sodium ascorbate; Vitamin C, sodium | any concentration | liquid: sanitary sewer solid: trash |
| Sodium azide solution | sodium azide < 0.05% in water | sanitary sewer |
| D-Sorbitol | any concentration | liquid: sanitary sewer solid: trash |
| Starch | any concentration | liquid: sanitary sewer solid: trash |
| Streptokinase | any concentration | liquid: sanitary sewer solid: trash |
| Strontium sulfate | any concentration | liquid: sanitary sewer solid: trash |
| Succinamide | any concentration | liquid: sanitary sewer solid: trash |
| Sucrose; table sugar | any concentration | liquid: sanitary sewer solid: trash |
T
| Waste Name | Waste Description | Disposal Method |
| DL-Threonine | any concentration | liquid: sanitary sewer solid: trash |
| Thyroglobulin, bovine | any concentration | liquid: sanitary sewer solid: trash |
| Tragacanth gum | any concentration | liquid: sanitary sewer solid: trash |
| Transferrin, human | any concentration | liquid: sanitary sewer solid: trash |
| Triolein | any concentration | liquid: sanitary sewer solid: trash |
| Tris buffer | up to 0.1 M | liquid: sanitary sewer |
| Tropomyosin | any concentration | liquid: sanitary sewer solid: trash |
| Trypsin inhibitor | any concentration | liquid: sanitary sewer solid: trash |
V
| Waste Name | Waste Description | Disposal Method |
| Valine | any concentration | liquid: sanitary sewer solid: trash |
| D-Valine | any concentration | liquid: sanitary sewer solid: trash |
| Vitamin K1; Phylloquinone; 2-methyl-3-phytyl-1,4-naphthoquinone | any concentration | liquid: sanitary sewer solid: trash |
X
| Waste Name | Waste Description | Disposal Method |
| Xanthine oxidase | any concentration | liquid: sanitary sewer solid: trash |
| Xylitol | any concentration | liquid: sanitary sewer solid: trash |
| D-Xylose | any concentration | liquid: sanitary sewer solid: trash |
