Consent of Independent Registered Public Accounting Firm EXHIBIT 23(a)

We consent to the incorporation by reference of our report dated February 18, 2011 (November 1, 2011 as to the effects of the retrospective adjustments in Notes C, E, H, I and Z), relating to the consolidated financial statements and financial statement schedule of The Dow Chemical Company and subsidiaries (the “Company”), appearing in this Current Report on Form 8-K, in the following Registration Statements of The Dow Chemical Company:

Form S-3:
No.	333-164985
Form S-4:
No.	333-88443
Form S-8:
Nos.	2-64560
	33-21748
	33-51453
	33-52841
	33-58205
	33-61795
	333-27381
	333-40271
	333-43730
	333-49183
	333-67414
	333-88443
	333-91027
	333-103518
	333-103519
	333-105080
	333-115185
	333-122932
	333-145015
	333-162910
	333-170384

/s/ DELOITTE & TOUCHE LLP

Deloitte & Touche LLP

Midland, Michigan

November 1, 2011