Malletto tannin Mangrove tannin Melangallic acid Mercury salts Metellagic acid Methylamino-4-bromanthraquinone Methylenedinaphthol Methylenedisalicylic acid Methylenedisalicylic acid, brominated Methylenedisalicylic acid, iodised Methylisopropylphenanthrene Methylotannin Molybdenum figure Monochloro-_p_-dihydroxybenzene Mud Myrabolams Myrabolams, tannin N Naphthalenesulphonic acid, [Greek: b]- Naphthol, [Greek: a]- Naphthol, [Greek: b]- Naphthol-[Greek: a]-methanesulphonic acid Naphtholdisulphonic acid Naphtholmonosulphonic acid Naphtholsulphonic acid, [Greek: a]- Naphtholsulphonic acid, [Greek: b]- Neodymium salts Neradol D Neradol D tannin Neradol N Neradol ND Neradol ND, neutral Nitronaphthalenesulphonic acid Nitrophenol, _o_- Nitrosodimethylaniline Non-tannins Novolak O Oak bark Oak bark tannin Official method of tannin analysis Orcinol Ordoval G Orsellic acid Orsellinoyl-_p_-oxybenzoic acid Oxyanthraquinone Oxyazo reaction Oxybenzoyl-_m_-hydroxybenzoic acid Oxybenzoyl-_p_-hydroxybenzoic acid, _m_- Oxybenzoylsyringic acid Oxynaphthoyl-_p_-hydroxybenzoic acid, _a_- Oxynaphthylmethanesulphonic acid Oxyphenylmethanesulphonic acid Oxyquinoline P PATENTS-- _Austrian_ 58,405; 61,057; 61,061; 64,479; 66,895; 68,796; 69,194; 69,375; 69,376; 69,377; 70,162 _German_ 72,161; 111,408; 112,183; 132,224; 181,288; 184,449; 200,539; 206,957; 211,403; 262,558; 282,313; 286,568; 290,965; 291,457; 293,042; 293,640; 293,693; 297,187; 297,188; 300,567; 303,640; 305,516; 319,713; 320,613 _Swiss_ 78,282; 78,797; 79,139 _U.S.A._ 1,639,174 Peat Pelts Pelts, action on, of Neradol D Penta-[_p_-hydroxybenzoyl] glucose, Penta-[_p_-methyl-_m_-digalloyl]-glucose Penta-[pyrogalloylcarboyl]-glucose Pentacetylleucotannin Pentacetyl-_m_-digallic acid Pentacetyl tannin Pentadigalloylglucose Pentagalloylglucose Pentagalloylglucoside Pentamethyldigallic acid, methyl ester Pentamethyl-_m_-digalloyl chloride, Pentamethyl-_m_-digallic acid Pentamethyl-_m_-digallic acid methyl ester Pentamethyl-_p_-digallic acid Pentamethyl-_p_-digallic acid methyl ester Pentamethoxybiphenylmethylolide carboxylic acid methyl ester Pentoxybiphenylmethylolide Pentoxybiphenylmethylolide carboxylic acid Phenanthraquinone Phenolsulphonate sodium Phenolsulphonic acid Phenolsulphonic acid anhydride Phenol, tautomeric Phenylcarboxylic acid Phenylhydrazine derivatives of tannin Phenylhydrazine ellagic acid Phlobaphene Phlobaphene-solubilising action of neradols Phloroglucinol Phthalic acid Pickling Picric acid Platinum salts Polydepsides Polydigalloylleucodigallic acid anhydride Polyhydroxybenzenes Pomegranate Preparation of tannin infusion Properties of leather tanned with Neradol Protocatechuic acid Protocatechuyl-_p_-hydroxybemoic acid Pseudo-tannage Purpuro tannin Pyrogallol Pyrogallic acid Pyrogalloylcarboyl-_p_-oxybenzoic acid Pyruvic acid Q Quinazarene Quinoline Quinone R