Synergistic flame retardant compositions and fiber blends including the same

A flame resistant textile, comprising:

• a fiber blend comprising a natural fiber and a synthetic fiber,
• wherein the natural fiber comprises cotton, and
• wherein the synthetic fiber comprises nylon;
• a synergistic flame retardant composition comprising:
• a phenolic compound comprising proanthocyanidin tannic acid;
• a phosphorus-containing compound comprising phytic acid;
• and
• a surfactant,
• wherein the synergistic flame retardant composition is present in an amount of 0.1 weight percent to about 8 weight percent, based on a total weight of the flame resistant textile, and
• wherein the flame resistant textile has:
• a heat release capacity of less than or equal to 230 joules per gram-Kelvin, as determined by pyrolysis combustion flow calorimetry,
• a total heat release of less than or equal to 11 kilojoules per gram, as determined by pyrolysis combustion flow calorimetry,
• a peak heat release rate of less than or equal to 120 kilowatts per square meter, as determined by cone calorimetry,
• a total heat release rate of less than or equal to 3.5 megajoules per square meter, as determined by cone calorimetry, or
• a combination thereof.