Form 4 Filed by Malfitano Ricardo S on May 15, 2008

This form 4 (insider trading filing) was submitted to the Securities and Exchange Commission (SEC) by insider Malfitano Ricardo S on May 15, 2008. The CIK number of this insider is 1190780. At the time of this reporting, Malfitano Ricardo S is the Executive Vice President of Praxair Inc . See all insider stock transactions reported by Malfitano Ricardo S and all stock buys, sales, and option exercises made by insiders at Praxair Inc . The stock ticker symbol of Praxair Inc is PX.

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Expires: February 28, 2011 Estimated average burden hours per response 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* MALFITANO RICARDO S (Last) (First) (Middle) 39 OLD RIDGEBURY ROAD (Street) DANBURY CT 06810-5113 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol PRAXAIR INC [ PX ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Executive Vice President
	3. Date of Earliest Transaction (Month/Day/Year) 05/13/2008
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/13/2008		M		70,000	A	$22.01	94,135	D
Common Stock	05/13/2008		M		70,000	A	$27.625	164,135	D
Common Stock	05/13/2008		S		11,600	D	$94.5	152,535	D
Common Stock	05/13/2008		S		100	D	$94.51	152,435	D
Common Stock	05/13/2008		S		700	D	$94.52	151,735	D
Common Stock	05/13/2008		S		1,000	D	$94.53	150,735	D
Common Stock	05/13/2008		S		1,600	D	$94.54	149,135	D
Common Stock	05/13/2008		S		68,200	D	$94.55	80,935	D
Common Stock	05/13/2008		S		2,100	D	$94.56	78,835	D
Common Stock	05/13/2008		S		1,200	D	$94.57	77,635	D
Common Stock	05/13/2008		S		1,900	D	$94.58	75,735	D
Common Stock	05/13/2008		S		100	D	$94.59	75,635	D
Common Stock	05/13/2008		S		10,300	D	$94.6	65,335	D
Common Stock	05/13/2008		S		200	D	$94.61	65,135	D
Common Stock	05/13/2008		S		500	D	$94.64	64,635	D
Common Stock	05/13/2008		S		35,500	D	$94.65	29,135	D
Common Stock	05/13/2008		S		1,200	D	$94.66	27,935	D
Common Stock	05/13/2008		S		600	D	$94.67	27,335	D
Common Stock	05/13/2008		S		1,300	D	$94.68	26,035	D
Common Stock	05/13/2008		S		1,700	D	$94.72	24,335	D
Common Stock	05/13/2008		S		200	D	$94.73	24,135 ( 1 )	D
Common Stock								2,542	I	401(k)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to buy)	$22.01	05/13/2008		M			70,000	02/21/2002	02/21/2011	Common Stock	70,000	$0	0	D
Stock Option (right to buy)	$27.625	05/13/2008		M			70,000	12/31/2002	12/31/2011	Common Stock	70,000	$0	0	D
Stock Option (right to buy)	$26.425							02/28/2004 ( 2 )	02/28/2013	Common Stock	68,000		68,000	D
Stock Option (right to buy)	$36.58							02/24/2005 ( 2 )	02/24/2014	Common Stock	80,000		80,000	D
Stock Option (right to buy)	$44.25							02/22/2006 ( 2 )	02/22/2015	Common Stock	100,000		100,000	D
Stock Option (right to buy)	$53.98							02/28/2007 ( 2 )	02/29/2016	Common Stock	92,500		92,500	D
Stock Option (right to buy)	$61.47							02/27/2008 ( 2 )	02/27/2017	Common Stock	92,500		92,500	D
Stock Option (right to buy)	$83.89							02/26/2009 ( 2 )	02/26/2018	Common Stock	54,800		54,800	D
Stock Option (right to buy)	$83.89							02/26/2011 ( 3 )	02/26/2018	Common Stock	30,000		30,000	D
Deferred Stock	$0 ( 4 )							( 5 )	( 5 )	Common Stock	10,203		10,203	D

Explanation of Responses:

1. This total includes shares previously acquired through automatic dividend reinvestment under the Praxair Dividend Reinvestment and Stock Purchase Plan.

2. This option becomes exercisable in three (3) equal annual installments beginning on the first year anniversary of the date of grant.

3. This option will vest in full if Praxair, Inc. achieves cumulative fiscal year earnings per share growth of at least 33% over 2007 earnings per share at any time prior to January 1, 2011. If vested, the option may be exercised beginning on the third anniversary of the grant date. If Praxair, Inc. fails to meet the cumulative earnings per share goal, this option will be forfeited.

4. Conversion to Praxair Common Stock is on a 1-for-1 basis.

5. Deferred stock untis acquired under the 1993 Praxair, Inc. Compensation Deferral Program as amended ("Deferred Program") and are to be settled in Praxair Common Stock.

Remarks:

	Anthony M. Pepper, Attorney-in-Fact	05/15/2008
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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