Tannic acid , its cas register number is 1401-55-4. It also can be called Gallotannic acid ; Gallotannin ; Galloylglucose ; Glycerite ; Quebracho ; Tannins .It is a light yellow to tan solid with a faint odor.It sinks and mixes with water. The chemical formula for commercial tannic acid is often given as C76H52O46, which corresponds with decagalloyl glucose.

Physical properties about Tannic acid are: (1)ACD/LogP: 6.184; (2)# of Rule of 5 Violations: 4; (3)ACD/LogD (pH 5.5): 6.03; (4)ACD/LogD (pH 7.4): -0.22; (5)ACD/BCF (pH 5.5): 20704.44; (6)ACD/BCF (pH 7.4): 1.00; (7)ACD/KOC (pH 5.5): 38667.75; (8)ACD/KOC (pH 7.4): 1.00; (9)#H bond acceptors: 46; (10)#H bond donors: 25; (11)#Freely Rotating Bonds: 56; (12)Index of Refraction: 1.927; (13)Molar Refractivity: 379.61 cm³; (14)Molar Volume: 799.078 cm³; (15)Polarizability: 150.489 10-24cm³; (16)Surface Tension: 203.126007080078 dyne/cm; (17)Density: 2.129 g/cm³

Uses of Tannic acid: Tannic acid is a common mordant used in the dyeing process for cellulose fibers such as cotton, often combined with alum and/or iron. Similarly tannic acid can also be used as an aftertreatment to improve wash fastness properties of acid dyed polyamide. Use of tannic acid in food applications is far more widespread and significant amounts are used as process aids in beer clarification, aroma compound in soft drinks and juices.

When you are using this chemical, please be cautious about it as the following:
1. Avoid contact with skin and eyes;
2. Wear suitable protective clothing;
3. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice;
3. Wear suitable protective clothing, gloves and eye/face protection;

You can still convert the following datas into molecular structure:
(1)InChI=1S/C76H52O46/c77-32-1-22(2-33(78)53(32)92)67(103)113-47-16-27(11-42(87)58(47)97)66(102)112-21-52-63(119-72(108)28-12-43(88)59(98)48(17-28)114-68(104)23-3-34(79)54(93)35(80)4-23)64(120-73(109)29-13-44(89)60(99)49(18-29)115-69(105)24-5-36(81)55(94)37(82)6-24)65(121-74(110)30-14-45(90)61(100)50(19-30)116-70(106)25-7-38(83)56(95)39(84)8-25)76(118-52)122-75(111)31-15-46(91)62(101)51(20-31)117-71(107)26-9-40(85)57(96)41(86)10-26/h1-20,52,63-65,76-101H,21H2/t52-,63-,64+,65-,76+/m0/s1;
(2)InChIKey=LRBQNJMCXXYXIU-QWKBTXIPSA-N;

The toxicity data is as follows: